JDM Transmissions High-Performance Manual Gear Oil & Seals

Did you know 43% of manual transmission failures stem from improper gear oil selection? When your JDM transmission screams during downshifts or leaks through worn rear transmission seals, every gear change becomes a gamble. This isn't just about parts - it's about preserving driving legacy.

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Engineering Excellence in JDM Transmission Design

Our triple-hardened synchros withstand 40% more torque than OEM specs. The secret? Aerospace-grade manual transmission gear oil that flows 22% faster in cold starts. Tested in -40°F Alaska winters and 120°F Death Valley summers.

Custom Solutions for Your Driving DNA

Track warrior or midnight touge runner? Our dynamic viscosity manual transmission gear oil adapts to your RPM patterns. Choose from 17 rear transmission seal materials - including our signature carbon-kevlar hybrid.

Proven in the Battlefield

Takumi's 900hp RB26-powered GT-R ran 12 consecutive Nürburgring laps without fluid fade. How? Our JDM transmission package with temperature-reactive gear oil and military-spec seals.

JDM Transmission Co. ® - Since 1993 | 100% JIS & SAE Certified | 18-Month Ironclad Warranty

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FAQS on jdm transmission

Q: What are the special maintenance considerations for a JDM transmission?

A: JDM transmissions may use unique components or specifications. Always use manufacturer-recommended manual transmission gear oil and inspect rear transmission seals regularly for leaks.

Q: What type of gear oil is best for a manual JDM transmission?

A: High-quality synthetic gear oil meeting API GL-4 or GL-5 standards is ideal. Check your JDM vehicle’s manual for specific viscosity requirements.

Q: How do I identify a failing rear transmission seal in a JDM car?

A: Look for fluid leaks under the transmission, low gear oil levels, or difficulty shifting. Promptly replace the rear transmission seal to avoid internal damage.

Q: Are JDM transmissions compatible with non-JDM vehicles?

A: Compatibility depends on the model and drivetrain setup. Some may require adapters or modifications. Consult a specialist to confirm fitment and rear transmission seal alignment.

Q: Can I replace a rear transmission seal myself on a JDM transmission?

A: Yes, but ensure the transmission is properly supported and drained. Use OEM seals and manual transmission gear oil during reassembly to prevent leaks.