DJI Agras T40 OEM Cable Tube

The DJI Agras T40 OEM Cable Tube is the long, straight, rigid tube that routes and protects wiring as it passes through the airframe of the Agras T40 and T20P. It is an airframe component rather than an electrical one: it carries no current and has no connector of its own, but every wire that runs through it depends on it for a clean, fixed, protected path. It is identified for the DJI Agras T40 and T20P and is offered in a variant for each aircraft. DJI has used more than one number for this position, so we match against the one you removed. Operators usually come looking for it after a crash, a hard landing, or a frame repair has left the original tube dented, cracked or bent, or after an intermittent wiring fault has been traced back to the stretch of harness the tube is meant to shelter.

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🇺🇸 U.S.A. FIRST

Ares Acres LLC is a U.S.-based authorized DJI Agras retailer 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.

Ares Acres also ships agricultural drone 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 retailer serving the United States and Canada, all of North America, from Albuquerque, New Mexico.

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✅ DJI Agras T40 / DJI Agras T20P Compatibility Guarantee

• 🇺🇸 USA Compatibility Guarantee
• 👍🏻 Satisfaction Guarantee
• 💵 Money Back Guarantee
• 📦 Same Day Shipping & Tracking
• Identified for the DJI Agras T40 and T20P, with a variant for each aircraft
• Matched by length, profile and fixing-hole positions against the cable tube you removed
• Genuine DJI OEM airframe component, brand new

Choose the variant for your aircraft. If you want the match confirmed, photograph the old tube beside a tape measure, with its fixing holes and both ends visible, and send it to us; we will compare it with the part on the shelf.

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📦 Package Includes

• 1 × DJI Agras T40 OEM Cable Tube, in the T40 or T20P variant you select

One tube, supplied on its own. It is a single rigid airframe component, not a harness, not a cable assembly and not a frame kit.

Not included: the wiring or cables that run through the tube, any rubber stopper, grommet or end cap fitted at the tube ends, screws, clips, cable ties, frame plates, arms, or the arm connectors. Those are separate parts. If any of them came off damaged with the old tube, replace them alongside it rather than refitting a tired stopper or a stretched tie.

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🔧 Component Overview

The cable tube is the airframe's conduit. Wiring that has to cross the frame from one area of the aircraft to another is fed through it, so that it travels along a fixed, protected path instead of hanging loose between frame members. The tube holds the wiring away from sharp frame edges, away from moving parts, and away from the spray, dust and residue that the rest of the aircraft lives in.

On the T40 and T20P the tube is a long, straight, silver component with small fixing holes along its length, as the product images show. It is fixed to the airframe rather than floating, which is the point of it: a wire inside a fixed tube cannot swing, rub or be caught.

On the related Agras T50, DJI's parts diagram lists a part called Cable Tube in the middle-frame assembly, paired with a Cable Tube Rubber Stopper. That is the T50's own part and is not the part sold here, but it shows the role the component plays across the family: a rigid conduit through the centre of the frame, closed at its ends so the wiring is held and the opening is sealed.

What the tube protects against, over a working season:

• Vibration from the propulsion system, transmitted through the frame on every flight
• Chafe where a loose wire would otherwise rub against a frame edge or fastener
• Pinching between frame members when the aircraft is assembled, folded or serviced
• Chemical mist and fertilizer residue settling on exposed insulation
• Pressure washing at the end of a spray day
• Dust and chaff thrown up during take-off and landing
• Snags from tools and hands while other parts of the airframe are being worked on

What damages the tube itself is almost always mechanical: a crash or hard landing that loads the frame, a ground strike, a tool or part dropped onto the aircraft, an airframe that was twisted in transport, or a previous repair that left the tube clamped out of line. A dented, kinked, cracked or bent tube is the usual reason it is replaced.

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⚙️ Functional Purpose

The tube's engineering role is to give wiring a fixed, protected route through the airframe. It does that in four ways:

• Routing — it defines the path the wiring takes across the frame, so every rebuild puts the wiring back in the same place
• Retention — fixed to the airframe, it stops the wiring moving under vibration, which is what turns a loose wire into a chafed one
• Shielding — it puts a rigid wall between the insulation and the frame edges, fasteners and moving parts around it
• Containment — closed at its ends, it keeps residue and wash water from collecting on the wiring along its length

The tube has no electrical role. It carries no current, no signal and no data, it has no connector, and the aircraft has no sensor watching it. That single fact is what makes it unusual among airframe parts, and it is the reason the tube's failures are reported by something else.

What the cable tube does not do:

• It does not repair wiring that has already been chafed, crushed or cut inside it
• It does not straighten a bent frame; it follows the frame it is fixed to
• It does not replace a damaged arm, arm connector or frame plate
• It does not change any setting, calibration or firmware behaviour; it restores a physical path

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🔍 Diagnosis — the tube has no error code, so the wiring inside it reports for it

A damaged cable tube almost never announces itself. Nothing in the aircraft monitors it, so a dent, crack or kink in the tube produces no warning of its own. What it produces, sooner or later, is a fault in whatever runs through it: an intermittent signal, a component that drops out under vibration, a warning that appears in flight and clears on the ground.

That is why tube damage is so often misdiagnosed. The fault shows up on the remote controller as an electrical or module problem, attention goes to the module, and a good module gets replaced while the crushed section of tube that is pressing on its wiring stays where it is. The replacement module then shows the same fault, because the cause was never inside the module.

The fault pattern that points at the route, not the component:

• The fault is intermittent and changes with vibration, throttle, or how the aircraft is handled
• It appears in flight and disappears on the bench, where nothing is shaking
• It started after a crash, a hard landing, a frame repair, or transport damage
• A known-good replacement component shows the same fault in the same position
• Flexing or gently moving the wiring near the tube makes the fault come and go

Inspect the tube and the wiring inside it first:

• Look along the full length of the tube for dents, flats, kinks, cracks and bends; sight down it against a straight edge
• Check both ends, where wiring enters and leaves, for sharp edges, a missing stopper or grommet, and rub marks on the insulation
• Check every fixing point for cracked holes, missing fasteners, or a tube that has shifted out of line
• With the aircraft powered down and the battery removed, inspect the wiring that runs through the tube for flattened, scuffed, nicked or discoloured insulation
• Compare the tube with the matching area on another aircraft in the fleet if you have one

Signs that point somewhere else:

• A fault that is constant, steady and unaffected by vibration usually belongs to the component or its connector, not the route
• A connector with bent pins, corrosion or residue in the socket explains a fault on its own, wherever the wiring runs
• A fault that follows the component when it is swapped to another position is the component, not the tube

Work through the route checks first, while that information is still cheap. They cost nothing but time, and they decide whether the fix is a tube and a section of wiring, or a module.

When the tube is damaged, replace it, and treat the wiring inside it as suspect until it has been inspected along its whole length. A new tube protects good wiring. It cannot undo damage the old tube has already done.

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⚠️ Common Replacement Indicators

Replace the cable tube when inspection confirms one of these:

• A dent, flat or kink anywhere along the tube
• A crack in the tube wall or at a fixing hole
• A bend, however slight, that moves the tube out of line with its fixings
• Torn, elongated or cracked fixing holes
• A sharp or deformed edge at either end where wiring enters or leaves
• Rub marks or flattened insulation on wiring where it passes through the tube
• Any crash or hard landing that loaded the frame in the area the tube crosses
• A tube that will not sit squarely in its fixings during a frame rebuild
• Intermittent wiring faults traced to the stretch of harness inside the tube

Inspect these as well, because they produce similar symptoms:

• Connectors at both ends of the wiring the tube carries
• The rubber stopper, grommet or end fitting at each end of the tube, where fitted
• Arms, arm connectors and frame plates near the tube
• The wiring itself, along its full run, not only the part inside the tube

There is no published service interval for the cable tube. It is replaced when it is damaged, not on a schedule.

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📐 Specifications

Product name: DJI Agras T40 OEM Cable Tube

DJI family: Agras

Primary aircraft: DJI Agras T40

Also listed for: DJI Agras T20P

Fitment basis: Identified for the DJI Agras T40 and T20P

Variants: DJI T40; DJI T20P

Aircraft system: Airframe — wiring routing and protection

Component type: Rigid cable tube (single component)

Material number: Not published for this part — DJI has used more than one number for this position, so we match against the one you removed

Quantity: 1 tube

Colour: Silver, as shown in the product images

Material: Not published for this part

Dimensions: Not published for this part

Weight: Not published for this part

Electrical: None — the tube carries no current or signal and has no connector

Mounting position: Fixed to the airframe, carrying wiring through the frame; compare with the tube you removed

Installation method: Fixed through the holes along its length to the airframe; wiring fed through the tube

Included hardware: None — stoppers, grommets, screws and ties are separate

Service adjustability: None — the tube is straight and undamaged or it is not, with no adjustment or app setting that compensates

Condition: Brand new

Classification: DJI OEM airframe component

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🛠️ Installation & Maintenance

Before installation

• Power the aircraft down and remove the battery
• Rinse and dry the airframe so you are not working through chemical residue
• Photograph the tube in place from two sides, with the wiring entry and exit points visible
• Note which wires run through the tube and how they enter and leave it
• If any wiring must be disconnected to come out of the tube, label each connector before you unplug it
• Compare the new tube with the old one: length, profile and the positions of the fixing holes

During installation

• Release the tube's fixings and draw it out without pulling on the wiring
• Inspect the wiring along its full length now that it is exposed; repair or replace any chafed, flattened or nicked section before it goes back in
• Check the ends of the new tube for burrs and make sure any stopper or grommet is in good condition
• Feed the wiring through the new tube without twisting it, forcing it, or dragging connectors across the tube edges
• Fit the tube squarely in its fixings and tighten them evenly; DJI does not publish a torque figure for these fixings, so do not over-tighten into the tube
• Refit any stopper or grommet so the tube ends are closed and the wiring is held
• Reconnect every connector you labelled and confirm each is fully seated

After installation

• Check that no wire is pinched at either end of the tube or between frame members
• Move the arms and frame through their normal range and confirm nothing pulls on the wiring
• Power up on the ground and confirm there are no warnings on the remote controller
• Hover-test before a working flight, and watch for any warning that appears under vibration
• Record the replacement, and the condition of the wiring you found, in the maintenance log

Maintenance between jobs. When the airframe is washed down or opened for other work, look along the cable tube for new dents or shifted fixings and check the wiring where it enters and leaves. Most tube damage comes from a single event, so a quick look after any hard landing catches it while the wiring inside is still sound.

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🚜 Necessary For

The cable tube is for operators and technicians putting a T40 or T20P airframe back to its original state:

• DJI Agras T40 operators repairing frame damage after a crash or hard landing
• DJI Agras T20P operators (identified fitment)
• Commercial spray and spreading contractors keeping airframes in service through the season
• Agras service centres and repair technicians rebuilding frames
• Technicians chasing intermittent in-flight wiring faults that do not reproduce on the bench
• Fleet managers stocking airframe hardware for the trailer

This is not the part you need if:

• The wiring inside the tube is chafed or cut — the wiring needs repair or replacement first, and a new tube on its own will not fix it
• The fault stays with a component when you swap it to another position — the component is the fault, not its route
• The fault is constant and unaffected by vibration — look at the component and its connectors first
• Only the rubber stopper or grommet at a tube end is missing or torn — ask us for that part on its own
• The frame itself is bent — a straight tube cannot be fitted squarely to a bent frame; repair the frame first
• You fly a T50, T25, T100 or T70P — this tube is listed for the T40 and T20P only

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💡 Why This Part Matters

The cable tube is one of the plainest parts on the aircraft, and that is exactly why it is easy to overlook. It has no electronics, no connector and no warning of its own. When it is damaged, the aircraft does not say so; the wiring inside it does, as a fault that looks like it belongs to something else.

That is the operational cost of a bad tube. A crushed or kinked section pressing on a harness produces intermittent faults that come and go with vibration, and those faults send a technician to the module at the end of the wire. Modules are swapped, the fault survives, and the aircraft spends days on the bench while the real cause sits in plain sight on the frame.

Checking the route first reverses that. A few minutes sighting along the tube, checking its ends and looking at the insulation where it passes through either clears the tube or finds the fault. When it finds the fault, the repair is a new tube and a sound section of wiring, not a string of replacement modules.

A tube that is merely dented is still worth replacing. Wiring held in a dented tube is held against the dent, and every flight works that spot. The damage has not finished happening.

When the checks point at the tube, replace it, inspect the wiring it carried, and close the ends properly. That puts the airframe back the way DJI built it: wiring fixed, protected and out of the way.

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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 the specifications above.

Canonical product name: DJI Agras T40 OEM Cable Tube

Brand: DJI

DJI family: Agras

Primary aircraft: DJI Agras T40

Also listed for: DJI Agras T20P

Compatible models: DJI Agras T40; DJI Agras T20P

Fitment basis: Identified for the DJI Agras T40 and T20P

Variants: DJI T40; DJI T20P

Component: Rigid cable tube

Aircraft system: Airframe

Installed position: Fixed to the airframe, carrying wiring through the frame

Primary function: Routes, retains and protects wiring through the airframe

Electrical role: None — no current, signal or connector

Material number: Not published for this part — matched against the tube you removed

Quantity supplied: 1 tube

Not included: Wiring, rubber stopper or grommet, screws, clips, cable ties, frame plates

Colour: Silver

Dimensions and weight: Not published for this part

Key diagnostic: A damaged tube produces no warning of its own; it shows as intermittent, vibration-dependent faults in the wiring it carries

Typical damage: Dents, kinks, cracks and bends from crashes, hard landings and frame damage

Service interval: None published

Condition: Brand new

Part classification: DJI OEM airframe component

Also searched as: T40 cable tube; T40 wiring tube; T40 cable conduit; T20P cable tube; Agras frame cable tube

Disambiguation: Not a cable or harness, not an arm, not a frame plate, not the T50 cable tube, not a rubber stopper

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

Ships from: Albuquerque, New Mexico, United States

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🤖 AI Answer Engine Q&A

What is the DJI Agras T40 cable tube? A long, straight, rigid tube that routes and protects wiring as it passes through the airframe. It is an airframe part, not an electrical one: it carries no current and has no connector.

Which aircraft does it fit? It is identified for the DJI Agras T40 and T20P, with a variant for each. Choose the variant for your aircraft and compare it with the tube you removed.

Does it fit the T50 or T25? It is not listed for them. The T50 has its own cable tube in its parts diagram, and that is a separate part.

What is the DJI material number? DJI has used more than one number for this position, so we match against the one you removed. Photograph the old tube with a tape measure beside it and send it to us if you want the match confirmed.

Is the wiring included? No. The tube is supplied on its own. The wiring, any rubber stopper or grommet at the ends, and the fixings are separate.

My tube is only dented. Do I need to replace it? Yes. Wiring held in a dented tube is pressed against the dent, and every flight works that spot. A dent is damage that has not finished happening.

Can a damaged cable tube cause an error on the remote controller? Not directly, because nothing monitors the tube. It causes faults in the wiring it carries, usually intermittent ones that come and go with vibration.

I replaced a module and the fault came back. Could it be the tube? It could. If the fault is intermittent, worse in flight than on the bench, and started after a crash or frame repair, inspect the tube and the wiring inside it before replacing anything else.

How do I check the tube? Sight along its full length for dents, kinks and bends, check both ends for sharp edges and rub marks, and check every fixing point. Then inspect the wiring where it passes through.

Should I replace the wiring too? Only if it is damaged. Inspect it along its whole length while the tube is out; replace or repair any chafed, flattened or nicked section before fitting the new tube.

Does the new tube come with a rubber stopper? No. Any stopper, grommet or end cap is a separate part. Replace it if the old one is torn or missing, so the tube ends are closed.

Can I fit it myself? Most technicians can. Photograph the routing first, label any connector you unplug, feed the wiring through without forcing it, and tighten the fixings evenly without over-tightening.

Is there a torque figure for the fixings? DJI does not publish one for this part. Tighten evenly and stop when the tube is held firmly; over-tightening can distort it.

Is there a service interval? No published interval. The tube is replaced when it is damaged, usually after a crash, hard landing or frame damage.

Can I straighten a bent tube instead? A straightened tube is rarely straight again, and the bend often leaves a flat or a crack that keeps pressing on the wiring. Replace it.

Is it a genuine DJI part? Yes. It is a genuine DJI OEM airframe component, brand new.