Allison 4th Gen TCM Breakout Harness Adapter | J-47275-1








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Part number & photos checked with you before dispatch
Every unit bench-tested before dispatch
Free Worldwide Tracked Shipping
30-Day Money-Back Guarantee
365-Day Replacement Warranty
Product details
Allison 4th Gen TCM Breakout Harness Adapter
What Is This Part?
The Allison J-47275-1 is a 4th Gen TCM breakout harness adapter for Allison 4th Gen transmission controls. Application: Allison 4th Gen TCM diagnostics - 80-pin breakout box adapter (used with J-47279 harness).
Installed between the TCM and the vehicle harness, and used with the J-47279 harness, it gives technicians access to every TCM circuit to measure voltage, resistance and continuity while diagnosing shift, solenoid and sensor faults.
Compatible Applications & Fitment
| Equipment / Application | Engine / Platform |
|---|---|
| Allison 4th Gen TCM diagnostics - 80-pin breakout box adapter (used with J-47279 harness) | diagnostic tool |
⚠ Always confirm against the part number on your existing unit or your engine / machine serial number. Unsure? Message us — we reply within 24 hours.
Part Number Cross-Reference
| Part Number | Relationship |
|---|---|
| J-47275-1 | This part (OEM part number) |
| J-47275 | Same part - alternate number / format |
| ATT-47275 | Same part - alternate number / format |
Also listed as: J-47275 · ATT-47275
Technical Specifications
| OEM Part Number | J-47275-1 |
| Brand / Manufacturer | Allison |
| Part Type | 4th Gen TCM Breakout Harness Adapter |
| Catalogue Description | Breakout harness (Kent-Moore J-47275) |
| Compatible Engines | Allison 4th Gen |
| Connector | 80-pin TCM breakout |
| Condition | New (unused) |
| Warranty | 365 days from delivery |
Condition Details
An unused unit. Packaging can vary by batch, and we can send photos of the actual unit before dispatch. Covered by our 365-day warranty and 30-day money-back guarantee.
Core / exchange: outright price — no core charge and no core return required.
Before You Buy
- Compare the part number on your existing unit with J-47275-1 or a cross-reference listed above.
- Not sure? Send us a photo of your old part's label and your engine / machine serial number — we confirm the match before you buy.
- Need more than one, or a quote for your fleet? Ask us for a bundle price.
Why Buy From OrderECM?
Shipping, Returns & Warranty
| Dispatch Time | 1–4 business days after cleared payment |
| Ships From | Sharjah, United Arab Emirates |
| Shipping Cost | FREE worldwide — express, fully tracked (DHL / FedEx / EMS) |
| Money-Back Guarantee | 30 days from delivery — full refund. Item must be returned in original, uninstalled condition; return shipping is paid by the buyer unless the item is not as described. |
| Warranty | 365 days from date of delivery |
Pairs well with

Allison 4th Gen TCM Breakout Harness Adapter | J-47275-1
Detailed Product Description
Free Shipping Worldwide
Bench-Tested Before Dispatch
FAQs
How do I confirm this part is compatible?
Match the part number, engine model, machine model, engine serial number, connector or fitting type, and old part label before ordering. Visual similarity alone is not enough to confirm fitment.
Can OrderECM help verify the correct part before shipping?
Yes. Send us your old part number, product label photo, engine model, machine model, engine serial number, VIN if applicable, and connector photos. Our team can help check compatibility before shipping.
Do you offer worldwide shipping?
Yes. Shipping is free on every order. Orders ship from our warehouse in Sharjah, UAE within 1–4 business days of cleared payment, by tracked express courier. Delivery time depends on the destination country, courier and customs clearance.
What is your return policy?
We offer a 30-day money-back guarantee. Items must be unused, undamaged, not modified, not installed, and returned with original packaging, labels, accessories, and documents where applicable. The buyer pays the return shipping, and there is no restocking fee.
What warranty do you offer?
OrderECM provides a 365-Day Replacement Warranty against verified product defects under normal use. Warranty does not cover incorrect installation, wrong programming, electrical faults, water damage, overheating, misuse, physical damage, tampering, or use with the wrong engine or machine.


