Welcome To Sirichai Pitjaika Company

Your trusted source for low-mileage, high-performance JDM engines, transmissions, and parts—imported with integrity and shipped nationwide.

Your Trusted Engine Supplier Since 2010

Welcome to Sirichai Patjaika Company , the premier destination for authentic Japanese Domestic Market engines. We understand that building a legendary car requires a legendary heart. That is why we go straight to the source—sourcing directly from Japanese auctions and reputable dismantlers to bring you engines that are as reliable as they are powerful. Whether you are restoring a classic, chasing dyno numbers, or swapping a new heart into your daily driver, every engine in our inventory is hand-selected for quality, inspected for performance, and backed by a commitment to transparency.

The Source You Can Trust

When you buy from us, you aren't buying an engine that has passed through four different hands. We source our inventory directly from Japanese auctions, dismantlers, and export partners. By cutting out the middlemen, we ensure two things: lower prices for you and higher quality standards that we control ourselves.

Hot Compression Tested & Leak Down Tested

Hot Compression Tests: We simulate running conditions to check cylinder health.
Leak Down Tests: We verify the seals are holding pressure.
Visual Internals: We scope what we can to ensure the rotating assembly is ready for boost.

The "No-Excuses" Warranty

14-Day Start-Up Warranty: Peace of mind while you perform your initial checks.
Fitment Guarantee: Our team verifies engine codes before shipping to ensure you get the correct match for your chassis.

The "Grade A" Difference

Visual Grade: We provide detailed photos of the actual unit you will receive.
Compression Tests: Where applicable, we provide documented compression test results.
Cosmetic Inspection: We grade based on real-world visual condition, so you know if the valve cover has minor scratches or showroom shine.