8-Speed Automatic Transmission Assembly for 2018-2020 Jaguar & Land Rover

A quick look at your own vehicle makes sure the right transmission shows up:

• Verify the transmission ID tag on the driver's side of the case matches H7A37000KD / H7A3-7000-KD.
• Confirm the vehicle has the 3.0L Supercharged V6 engine (VIN 8th digit is V).
• Confirm the vehicle is AWD (All-Wheel Drive).

What the install really takes — plan and budget with confidence:

Special tools this job needs:

• Heavy-duty transmission jack
• Engine support bar/brace
• JLR Pathfinder or SDD diagnostic system with J2534 pass-thru or DoIP VCI
• Fluid fill pump with specific adapter
• Diagnostic scanner capable of reading live transmission fluid temperature
• Torque wrench / torque angle gauge

Budget for these consumables at install:

• ZF Lifeguard 8 fluid (Land Rover spec LR023288 / Shell L12108)
• New plastic transmission oil pan with integrated filter, gasket, and plugs
• Torque converter seal (front pump input shaft seal)
• Transmission cooler flush solvent
• New aluminum bellhousing bolts and driveshaft bolts (torque-to-yield)

What your vehicle’s computers will need after the swap:

What’s involved: Security/immobilizer re-marriage, VIN-specific programming, and TCM adaptive relearn

The integrated TCM is part of the vehicle's anti-theft/immobilizer system (EGS security) and is hard-coded to the donor vehicle's VIN. It must be cloned from the original TCM using a bench programmer (e.g., FC200/Flex) or programmed using JLR Pathfinder/SDD software with an active online subscription.

Pro tips for a smooth first start-up — hand them to whoever does the install:

• Torque Converter Seating: Must feel/hear distinct drops (sources differ: 2 vs 3 drops) to ensure full engagement. Failing to seat it fully will crush the internal oil pump gear and destroy the transmission instantly.
• Oil Cooler Inspection: Must pressure-test or replace the transmission oil cooler to prevent coolant contamination (TSB SSM75701).
• Fluid Level Checking Temperature: Fluid level check is highly temperature-sensitive and must be performed between 30°C and 50°C with the vehicle level and engine running.
• Emergency Park Release Cable: Ensure proper routing and adjustment to prevent slipping out of Park.
• Accessing Torque Converter Bolts: Often accessed by removing the starter motor.

Easy to get right once you know them:

• Skipping the Immobilizer/VIN Programming: Attempting plug-and-play will result in a no-start condition or lock the vehicle in Park.
• Reusing the Old Transmission Pan: The filter is integrated into the plastic pan and must be replaced as a complete assembly.
• Not Replacing the Bellhousing Bolts: Reusing the single-use aluminum bolts can cause them to snap or back out.
• Using Generic ATF: Failing to use genuine ZF Lifeguard 8 or JLR-approved fluid causes immediate shudder and shifting issues.
• Failing to Flush the Cooler Lines: Debris from the previous failed transmission will contaminate and destroy the replacement unit.
• Misdiagnosing Transfer Case Judder: Shuddering during tight turns is often caused by worn transfer case fluid, not transmission failure.

Not issues with the units on this page — the manufacturer documented these for every transmission of this family, wherever you buy one. Handy for your installer: