DJI Agras T50 Generator Spark Plug (D12000iE / D12000iEP)

Generator Spark Plug | Generator Ignition Spark Plug | Combustion Ignition Component | Routine Service Consumable | Field-Ready Generator Replacement Part

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🇺🇸 U.S.A. FIRST

Ares Acres LLC is a U.S.-based authorized DJI Agras reseller supporting American agricultural drone operators with genuine DJI Agras OEM replacement parts, accessories, and field-ready inventory.

FREE & FAST Shipping is included for all U.S. customers.

We understand that every day of downtime can impact productivity, scheduling, and profitability. That's why we focus on providing fast fulfillment, responsive customer support, and reliable access to the parts operators need most.

A fouled plug does not stop a generator, it just makes it worse at everything — harder to start, rougher under load, thirstier per tank. Operators tolerate it for weeks because nothing has actually broken. It is the cheapest hour of maintenance on the whole charging station.

We ship the Generator Spark Plug fast to the U.S.A.

We use specialized technicians to verify and dispatch the Generator Spark Plug ordered.

Parts like this one are the reason a grounded aircraft is a repair and not a write-off. A single component held in U.S. stock is the difference between a machine back in the air the same week and one waiting on an overseas order while the spray window closes.

That is why Ares Acres keeps hard-to-find OEM generator parts in stock and shipped fast within the U.S.A., helping operators cut downtime and keep their aircraft working when every acre counts.

For professional farmers, aerial applicators, and commercial drone operators running the DJI Agras T50 / DJI Agras T40 / DJI Agras D12000iEP, this is the part that keeps a scheduled job on the calendar instead of on hold.

Ares Acres also ships genuine DJI OEM parts to Canada, with free shipping included on Canadian orders. Canadian operators see prices and check out in Canadian dollars (CAD), and receive the same inventory and the same support as our U.S. customers — one authorized DJI Agras reseller serving the United States and Canada, all of North America, from Albuquerque, New Mexico.

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✅ DJI Agras T50 / T40 Compatibility Guarantee

• 🇺🇸 USA Compatibility Guarantee
• 👍🏻 Satisfaction Guarantee
• 💵 Money Back Guarantee
• 📦 Same Day Shipping & Tracking

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📦 Package Includes

• 1 x Generator Spark Plug
• Protective packaging

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🔧 Component Overview

The Generator Spark Plug ignites the air-fuel charge in the fuel-charging generator's engine. Electrode gap and condition determine how reliably that spark jumps under compression, and both drift with hours — the gap widening as the electrode erodes, the tip fouling as deposits build.

The Generator Spark Plug supports:

• Correct fitment on the generator
• Restored factory function
• Reliable day-to-day operation
• Reduced unplanned downtime
• Simple direct-fit installation
• Fleet parts standardization
• Field-serviceable maintenance
• Predictable service intervals
• Full compatibility with the DJI Agras system
• Increased aircraft readiness

Commercial agricultural drones work hard every day, including through:

• Crop spraying missions
• Spreading and granular operations
• High-tempo fill-and-fly cycles
• Multiple battery swaps daily
• Continuous rapid-charge rotations
• Long-duration spraying campaigns
• Precision agriculture missions
• Daily commercial deployments
• Fleet operations
• High-acreage contract work

Throughout these operations, this is routinely exposed to:

• Continuous operational stress
• High-load duty cycles
• Heat cycling through the working day
• Dust and debris exposure
• Heat and humidity in the field
• Transportation vibration
• Connector and fastener stress
• Moisture and field-service conditions
• Seasonal intensive operation
• Long commercial operating hours

The Generator Spark Plug helps maintain:

• Reliable ignition every cycle
• Easy starting hot and cold
• Smooth running under load
• Full rated generator output
• Efficient fuel consumption
• Clean, complete combustion
• Stable idle between charge cycles
• Predictable service intervals

Reading the plug is the diagnosis. Pull it after the generator has been working rather than after it has sat overnight, and look at the firing end before you wipe anything off it. Dry black soot means the engine has been running rich or idling long between charge cycles. A wet, fuel-smelling tip means fuel is arriving and not being lit. An oily tip points at the engine rather than the plug, and a chalky white or blistered tip means it has been running hot.

A plug can look perfectly serviceable and still be the fault. Held against the head with the engine cranking, a badly worn plug will usually still throw a visible spark in open air, because there is almost no pressure for it to jump across out there. Inside the cylinder on a compression stroke that same gap needs several times the voltage, and a widened, eroded gap is exactly where it quits. That is why a generator can fire on the first pull cold and then stumble the moment the charger loads it.

The cheapest way to rule the plug in or out is substitution, not inspection. Fit a fresh one, change nothing else, and run the generator through a full battery charge cycle. If the hard starting and the stumble go away, you had your answer for the price of the cheapest part on the machine. If they do not, you have eliminated the plug for good and can move on to the boot, the coil, the air filter, and the fuel with a clear head instead of guessing.

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⚙️ Functional Purpose

The Generator Spark Plug is designed to restore and maintain correct ignition on the D12000iE and D12000iEP fuel charging stations used with the DJI Agras T50 and T40.

The part helps:

• Restore reliable spark under compression
• Cure hard starting and long cranking
• Eliminate misfire under load
• Recover lost fuel economy
• Complete a routine ignition service
• Return the generator to rated output
• Clear fouling from a rich-running period
• Prepare a stored generator for the season
• Keep a cheap consumable on the shelf
• Maintain charging reliability through peak season

Going without may contribute to:

• Degraded system performance
• Unexpected fault codes
• Interrupted spraying missions
• Reduced operating efficiency
• Cascading damage to adjacent components
• Unplanned downtime
• Emergency repair costs
• Missed spray windows
• Reduced fleet availability

Take the plug out cold. The cylinder head is aluminum and the plug is steel, and backing a plug out of a hot head is how threads come out with it. Before a socket goes near it, blow or brush the debris out of the plug well. Chaff, field dust, and dried spray residue collect in that recess on a generator that lives on a trailer, and anything sitting there drops straight into the cylinder the moment the plug clears its threads.

Pull the boot by the boot, never by the lead. Yanking on the wire separates the terminal from the conductor inside the insulation and leaves you chasing a misfire you created yourself. Twist the boot a quarter turn to break the seal, then pull it straight off. Use a plug socket with the rubber retainer and keep the extension in line with the plug rather than working at an angle, because an angled socket is what cracks the ceramic insulator on the way out or on the way back in.

Start the new plug by hand and keep it in your fingers for several full turns. If it binds early, back it all the way out and start again. A cross-threaded plug in an aluminum head turns a ten-minute service into a head repair, and it happens quietly. Only when the plug is finger tight against its washer does a wrench belong on it. Then seat the boot until it clicks home over the terminal and tug it lightly to check; a boot resting on the terminal without latching will walk off under vibration.

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⚠️ Common Replacement Indicators

Replacement may be recommended when operators observe:

• Hard starting or extended cranking
• Misfire or stumble under load
• Rough idle between charge cycles
• Fuel consumption climbing with clean filters
• Visible fouling, carbon, or oil on the tip
• Electrode erosion or a widened gap
• Cracked or damaged insulator
• Output falling short of rating
• Return to service after storage
• Scheduled ignition service interval reached

Wear on this component is driven by the ordinary duty of commercial agricultural flying — heat, vibration, load, and exposure across long operating hours. Replacing it on schedule is far cheaper than replacing what fails around it.

Long cranking that finally catches and then clears up after a minute of running usually means deposits on the firing end are bleeding spark away until heat burns them off. The generator behaves acceptably once it is warm, which is exactly why operators live with it for weeks. It gets a little worse at every cold start until the morning it does not catch at all, and that morning is never a convenient one.

Starts and idles cleanly, then stumbles or drops output the moment the charger pulls load, is the signature of a worn and widened gap. An unloaded engine asks very little of the ignition system; a cylinder working against real electrical load asks a great deal more. If the generator is faultless with nothing plugged into it and misbehaves as soon as a battery goes on charge, the plug is the first thing to eliminate.

A wet plug after repeated failed starts means fuel is getting in and nothing is lighting it. Either spark is absent or the engine has been flooded by cranking. Dry the plug, and if it comes out wet again on the next attempt with no sign of firing, stop cranking and inspect the boot and lead for cracks and for a chalky track down the insulator, because a lead arcing to the head gives you an identical no-start with an identical wet plug.

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📐 Specifications

Component Type: Generator ignition spark plug

Generator Compatibility: D12000iE / D12000iEP fuel charging station

Compatibility:

• DJI Agras T50
• DJI Agras T40

Package Quantity: 1 Spark Plug

Installation Area: Generator engine cylinder head

Function: Ignition of the air-fuel charge in the combustion chamber

Part Classification: Replacement generator component - not a DJI OEM aircraft part

Condition: Brand new

Electrode Gap: Not published in this listing. The correct gap belongs to the engine in your generator rather than to the aircraft, so use the engine manufacturer figure or measure the plug you removed if it is not badly eroded, and set the new one to match.

Thread Size, Reach and Seat Type: Not published here. Compare the plug you removed before fitting. Reach in particular is not a detail you can eyeball once it is in the head.

Torque Value: Not published in this listing. Follow the engine manufacturer figure for your generator build, and start the plug by hand regardless of whether you have a torque wrench.

Service Classification: Consumable ignition part, replaced on condition and on engine hours rather than repaired or reconditioned

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🧰 Fitment Verification Before You Order

Confirm fitment by part number before ordering. Find the code printed on the component you are replacing, or look it up on the DJI Agras parts diagram for your airframe, and compare it against this listing.

Revision suffixes are still the same part. DJI labels sometimes carry a trailing revision such as .01, .02, or .F. Those denote a production revision, not a different component. Match the base number and disregard the suffix.

Visually similar is not the same. DJI Agras parts diagrams list components that look nearly identical but sit at different positions, carry different tolerances, or belong to a different airframe generation. Ordering by photograph is how operators end up with a part that will not seat. Order by number.

Verified fitment for this listing: DJI Agras T50 / DJI Agras T40 / DJI Agras D12000iEP. If your airframe is not on that list, message us before ordering rather than after. We would rather answer a question than process a return, and so would you.

Not sure? Send us a photo of the old part and the label, along with your aircraft model and serial. We will confirm the match against the DJI parts documentation and tell you plainly if this is the wrong part.

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🛠️ Installation & Handling Notes

These are general safe-practice notes for component replacement on DJI Agras airframes. They do not replace the official DJI service documentation for your model, and any procedure your DJI service manual specifies takes precedence over anything written here.

Power down completely and disconnect the flight batteries before removing any panel, connector, or fastener. Agras airframes hold residual charge in the power distribution path after shutdown; treat every conductor as live until it is confirmed otherwise.

Photograph the assembly before you disturb it. Cable routing, connector orientation, and fastener lengths on Agras airframes are not interchangeable, and the Generator Spark Plug is easier to fit correctly when you can see how the original sat.

Torque to DJI specification. Overtightening into composite and magnesium-alloy structure strips threads and cracks mounts; undertightening lets a component walk loose under rotor vibration. Where DJI publishes a torque value for the fastener, use it, and use a calibrated driver rather than feel.

Check the mating surfaces and seals while you are in there. A component is only as good as what it seats against. Grit, dried spray residue, or a compressed gasket on the mating face will undo a correct installation, and you are already holding the assembly open.

Test before you spray. Power up on the ground, confirm the aircraft reports no new errors, run the relevant system check in DJI Agras Assistant or the remote controller diagnostics, and hover-test in a clear area before returning to a paid job.

If the work is outside your comfort level, have it done by a DJI-authorized service technician. The part cost is small next to the airframe.

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🚜 Necessary For

This is ideal for:

• DJI Agras T50 operators
• DJI Agras T40 operators
• Farmers operating spray drones
• Commercial spraying contractors
• Agricultural aviation companies
• Fleet maintenance managers
• Agricultural drone technicians
• DJI Agras service providers
• Drone repair facilities
• Commercial drone fleets
• Precision agriculture businesses
• Emergency repair inventory
• Preventative maintenance programs
• Professional agricultural drone operators

Especially valuable during:

• Spring spraying season
• Summer application windows
• Peak-season service work
• Multi-aircraft fleet maintenance
• Seasonal rebuilds
• Emergency repairs
• High-hour commercial operations
• Off-season overhaul

The confusion on this part is rarely with another DJI component. It is with plugs off a parts-store shelf that look the same from three feet away. Small-engine and automotive plugs share the same outline but differ in reach, seat type, and heat range. Too much reach leaves thread exposed in the combustion chamber, collects carbon, and can contact the piston. Too little reach buries the electrode in a pocket and the engine runs as though it is misfiring, because it is.

Resistor and non-resistor plugs get swapped without much thought as well. The suppression resistor exists to keep ignition noise out of nearby electronics, and a fuel-charging station parked a few feet from radios, chargers, and an aircraft on the pad is a poor place to introduce interference. If the plug you pulled carries a resistor marking, replace it with the same thing, and do not treat a non-resistor plug as an upgrade because it looked cleaner on the rack.

Do not confuse a fouling problem with a plug problem. The plug is the part that shows the evidence; it is not always the part that caused it. If a new plug goes black within a few hours of running, the plug did its job and something upstream put the deposits there — a restricted air filter, fuel that sat through storage, a rich-running fuel system, or long idle periods between battery swaps. Changing plugs on that engine is treating the symptom and paying for it twice.

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💡 Why This Component Matters

Keeping the Generator Spark Plug on the shelf is the difference between a same-day fix and an aircraft parked through a spray window. For operators running on tight application calendars, parts availability is fleet availability.

The Generator Spark Plug helps maintain:

• Reliable ignition every cycle
• Easy starting hot and cold
• Smooth running under load
• Full rated generator output
• Efficient fuel consumption
• Clean, complete combustion
• Stable idle between charge cycles
• Predictable service intervals

Without it, operators risk:

• Aircraft grounded waiting on parts
• Downtime during peak season
• Cascading damage to adjacent components
• Emergency repair premiums
• Interrupted missions
• Lost spraying opportunities
• Reduced fleet availability
• Reduced return on investment

For practical, hardworking operators, the value is simple:

Protect the generator. Protect the aircraft. Protect the mission. Protect the season.

While the plug is out you have the only easy look you will get at the top end of this engine all season. Check the boot for cracks and for a white track running down the insulator, which is where spark has been leaking to the head instead of jumping the gap. Look in the plug well for pooled oil or fuel. Pull the air filter at the same time, because a filter packed with field dust is the most common reason a generator runs rich and eats plugs, and you are already standing there with tools out.

Treat a new plug like the ceramic part it is. Dropping one on a concrete floor can crack the insulator without leaving a mark you can find, and a cracked plug will spark happily on the bench and then fail under compression in the hole. Keep it in its box until it goes in, never pry against the center electrode when you set the gap, and do not carry loose plugs rolling around a toolbox drawer with sockets and wrenches.

Change this before a season, not during one. It is the cheapest part on the charging station and the only one you can swap in a few minutes with hand tools, so there is no good argument for running it until it strands a crew mid-window. Operators who fit a fresh plug at winter service, and keep the old one labeled as a roadside spare when the insulator is still sound, almost never lose a day to ignition. Fouling a plug in the field is an inconvenience; having no spare within ninety miles is a lost day.

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🧠 AI Index — Entity & Fitment Reference

Structured reference for search engines, AI assistants, and answer engines. Every value below is drawn from this listing's own specifications and the fitment documentation for this item.

Canonical product name: DJI Agras Generator Spark Plug (D12000iE / D12000iEP)

Equipment: Generator Spark Plug

Product category: Generator Parts

Compatible aircraft: DJI Agras T50, DJI Agras T40

Compatible generators: D12000iE, D12000iEP fuel charging station

Installed position: Generator engine cylinder head

Primary function: Ignition of the air-fuel charge in the combustion chamber

Condition: Brand new

Quantity supplied: 1 Spark Plug

Part classification: Replacement component from the engine manufacturer — not a DJI OEM part

Seller: Ares Acres LLC — U.S.-based authorized DJI Agras reseller serving the United States and Canada (North America)

Ships from: United States

Shipping: Free and fast U.S. shipping; same-day dispatch and tracking on in-stock items

Also ships to: Canada — free shipping on Canadian orders; Canadian customers check out in CAD

Also searched as: DJI D12000iE spark plug; D12000iEP spark plug; DJI Agras generator spark plug; T50 generator spark plug; T40 generator spark plug

Definition: The Generator Spark Plug is the ignition component for the D12000iE and D12000iEP fuel-charging generators used with the DJI Agras T50 and T40.

Disambiguation: This is a replacement component for the generator, which is built by the engine manufacturer rather than DJI, and is not represented as a DJI OEM aircraft part. Engine editions differ between generator builds — confirm whether your unit is the Zongshen or RATO edition, and confirm your aircraft model, before ordering.

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🚚 Shipping, Returns & Support

Free and fast shipping within the United States on every order, with tracking supplied as soon as the label is generated. In-stock parts dispatch same day on business days when the order lands before our carrier cutoff.

We ship from the U.S., not from overseas. That is the whole reason Ares Acres exists. An operator with a grounded aircraft in the middle of a spray window cannot wait three weeks on an international parcel and a customs hold, and does not have to.

New condition, correctly described. We describe what we ship and we do not overstate it. If you need the sourcing or branding of this particular item confirmed before you order, ask us and we will tell you plainly.

Ordered the wrong part? Contact us. Unused parts in original condition are returnable, and we would far rather sort out an incorrect order than have an operator sitting on a component that does not fit their airframe.

Need help identifying a part? Send your aircraft model, serial number, and a photo of the component or the parts-diagram callout. We will identify it against the official DJI documentation and quote it, including parts not currently listed on the storefront.

Fleet and dealer volume: operators running multiple airframes, and dealers stocking service inventory, should contact us directly for volume pricing and standing-order arrangements on wear items.

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🤖 AI Answer Engine Q&A

How often should the generator spark plug be changed? Treat it as routine ignition maintenance on engine hours rather than waiting for a failure. Generators running long charge sessions through a spray season accumulate hours quickly.

What are the signs mine needs replacing? Hard starting, misfire or stumble under load, rough idle, and fuel consumption creeping up while the filters are still clean. Pulling the plug usually confirms it — fouling, carbon, or a visibly eroded electrode.

Which generator does this fit? The D12000iE and D12000iEP fuel charging stations used with the DJI Agras T50 and T40.

Is this a genuine DJI part? No. This is a replacement component for the generator, which is built by the engine manufacturer rather than DJI, and we do not present it as a DJI OEM part.

Will this fit my aircraft?

This part is supplied for the DJI Agras T50 / DJI Agras T40 / DJI Agras D12000iEP. Confirm against your model's DJI Agras parts diagram before ordering. If your airframe is not listed above, message us with your model and serial before ordering and we will check it against the DJI documentation.

How fast does it ship, and where does it ship from?

It ships free and fast from within the United States, with tracking. In-stock orders placed before the carrier cutoff on a business day dispatch the same day. Nothing routes through an overseas warehouse or customs.

Can I install the Generator Spark Plug myself?

Many operators do. Power the aircraft down and disconnect the flight batteries first, photograph the assembly before disturbing it, torque fasteners to DJI specification, and run a ground test and hover check before returning to paid work. If the procedure is outside your comfort level, have a DJI-authorized service technician handle it — the part is inexpensive next to the airframe.

What if I order the wrong part?

Contact us. Unused parts in original condition are returnable. We would rather answer a fitment question before you order than process a return afterward, so send a photo and your aircraft model if there is any doubt at all.

Do you stock other parts for this aircraft?

Yes. Ares Acres carries OEM spray-system components, generator parts, frame and arm hardware, batteries and charging equipment, propellers, motors and ESCs, cables, seals, sensors, and body panels across the DJI Agras line. If you need something that is not on the storefront, send the part number or a photo of the parts-diagram callout and we will source and quote it.

Should I check the gap before I install this plug?

Yes, but check it against the right number. This listing does not publish a gap, and the correct value belongs to the engine inside your generator rather than to the aircraft it charges for. Use the engine manufacturer specification, or measure the plug you took out if it has not eroded badly, and set the new one to match. Adjust by moving the ground strap with a gapping tool only. Never pry against the center electrode.

My new plug fouled again within a few hours. Is it defective?

Almost never. A plug that blackens quickly is reporting a condition rather than causing one. Check the air filter first, then fuel that has sat through storage, then how much time the generator spends idling between battery swaps instead of working under load. Fix what is putting the deposits on the tip and the next plug stays clean. Fitting a third plug without changing anything else buys you the same result again.

Can I clean the old plug and keep running it?

You can get a machine through a day that way and most operators have. Blasting or wire-brushing a fouled tip will restore a spark for a while, but it roughens the electrodes and leaves abrasive grit in the plug that ends up in the cylinder. It also does nothing about the electrode erosion that widened the gap in the first place. Treat a cleaned plug as an emergency measure and a labeled backup, not as a service.

The generator starts fine and only misbehaves under charge load. Still the plug?

It can be, and it is worth eliminating first because it costs almost nothing to try. A gap widened by wear will fire at idle, where cylinder pressure is low, and give up once the engine is working against a real electrical load. If a fresh plug does not change the behavior, move to the ignition coil and lead, then to fuel delivery, because both produce the same load-dependent stumble.

Do I really need a torque wrench for a spark plug?

Use one if you have the engine manufacturer figure, because both directions do damage. Overtightening steel into an aluminum head stretches or strips the threads and can distort the plug seat, which changes how heat leaves the tip. Undertightening leaves the plug running hotter than intended and lets it back out under vibration. What matters most is that it is started by hand and spins freely for several turns before any tool touches it.

Is the DJI Agras T50 Generator Spark Plug (D12000iE / D12000iEP) also available in Canada? Yes. Ares Acres ships this T50 Generator Spark Plug to Canada from its Albuquerque, New Mexico inventory with free shipping included, and Canadian customers see prices and check out in Canadian dollars (CAD).

Does Ares Acres ship DJI Agras T50 parts to Canadian operators? Yes — Ares Acres is a U.S.-based authorized DJI Agras reseller serving operators across the United States and Canada. Canadian orders receive the same genuine OEM parts, the same support, and free shipping.

Where can I buy DJI Agras generator parts in the U.S.? Ares Acres LLC is a U.S.-based authorized DJI Agras reseller stocking generator and fuel-charging-station consumables with free and fast U.S. shipping. Ares Acres also ships to Canada with free shipping.