Automatic transmission X187E 3.7 NISSAN 370Z INFINITI G37 34TKM

at Buy Mustang parts Ltd, the Jatco 7-speed automatic transmission (Model JR710E / Nissan code RE7R01A) is a high-value core component. The unit identified by the code 31020-X187E is a specific iteration of this gearbox, commonly found in low-mileage JDM imports.

1. Technical Specifications

• Transmission Model: Jatco JR710E (also known by the Nissan internal code RE7R01A).

• Engine Pairing: Designed for the 3.7L VQ37VHR V6 engine.

• Configuration: Rear-Wheel Drive (RWD) only.

• Clutch Logic: Features adaptive shift logic and a manual mode compatible with steering-wheel-mounted paddle shifters.

2. Compatibility & Fitment

This transmission is a direct bolt-on for several high-performance Nissan and Infiniti platforms from 2009 to 2015+:

• Nissan 370Z (Z34): All automatic models (Coupé, Roadster, and Nismo).

• Infiniti G37 / Q40: Sedan and Coupé (RWD models).

• Infiniti M37 / Q70: 3.7L RWD variants.

• Infiniti Q50 / Q60: Early 3.7L V6 models (pre-2016).

Note for Buy Mustang parts Ltd: While the physical housing (31020-X187E) is often interchangeable, you must advise customers to reuse their original Transmission Control Module (TCM) or have the donor TCM reprogrammed to match their vehicle’s VIN and ECU, otherwise the car will enter “limp mode.”

3. Strategic Inventory Advice

• The “34TKM” Selling Point: 34,000 kilometers is exceptionally low mileage for this gearbox. In the current market, most domestic units have surpassed 150k km. Market this as a “Premium JDM Import” to justify a higher price point.

• Common Failure Points: These transmissions are prone to P0720 (Output Speed Sensor) errors and coolant contamination from failing factory radiators (the “Pink Milkshake”).

  • Upsell Opportunity: Bundle this sale with an external transmission cooler kit to ensure the new owner doesn’t suffer the same contamination failure.

• The “VR30” Upgrade Path: Many high-horsepower 370Z owners are currently looking for the newer VR30 (Q50 Red Sport) transmission as an upgrade. While this X187E is the factory-correct replacement, ensure your marketing targets the restoration and OEM+ market specifically.