Fully Compression Tested 2003–2005 Nissan 350Z / Infiniti G35 3.5L V6 Engine with 6-Speed Manual Transmission – Clean JDM VQ35DE Combo for Sale

Restore the performance of your Nissan 350Z or Infiniti G35 with this fully compression-tested JDM VQ35DE engine and 6-speed manual transmission combo, available now at J-Spec Auto Sports Inc. Sourced directly from Japan, this setup is the ideal replacement for worn, high-mileage U.S. engines and transmissions commonly found in aging Z and G-series platforms.

This JDM VQ35DE 3.5L V6 engine is known for its strong torque curve, smooth power delivery, and bulletproof reliability when maintained properly. Paired with the factory 6MT transmission, this combo gives you everything needed to restore factory performance or support your next build. Whether your current VQ is burning oil, knocking, misfiring, or your 6-speed gearbox is grinding or slipping synchros, this low-mileage JDM motor/trans package is the perfect upgrade.

Each engine and transmission set we import undergoes a full compression test and mechanical inspection to ensure strong internals, clean operation, and consistent performance. These JDM powertrains typically have significantly fewer miles than their U.S. counterparts due to Japan’s strict vehicle regulations and shorter average driving distances.

What’s Included:

• JDM VQ35DE 3.5L V6 engine (2003–2005 spec)

• 6-speed manual transmission (6MT)

• Intake manifold, throttle body, injectors

• Engine harness (as pictured)

• Accessories included as shown

• Fully compression tested prior to removal

Why Buy from J-Spec Auto Sports Inc.?

With more than a decade of experience importing premium JDM engines, transmissions, nose cuts, and performance parts, J-Spec Auto is one of America’s most trusted sources for clean, low-mileage Japanese components. Our team hand-selects every unit, ensuring you receive a reliable, worry-free replacement backed by our 90-day start-up warranty.

We pride ourselves on offering exceptional customer service, accurate product descriptions, and fast nationwide shipping. When you buy from J-Spec Auto, you’re not just purchasing an engine—you’re getting peace of mind and the expertise of a company committed to quality.

Upgrade your Z or G today with a clean, low-mileage, fully compression tested 03–05 VQ35DE engine and 6-speed transmission combo from J-Spec Auto Sports Inc. and get your car back on the road with confidence.