What a JDM engine is
JDM stands for Japanese Domestic Market: vehicles built for sale in Japan rather than for export. Japan's periodic inspection program, the shaken, gets costlier as a car ages, so owners replace cars sooner and the engines come out with low mileage. Importers buy those engines, ship them to the US, and sell them as replacements for the same or a closely related engine in US-market cars. For a Honda, Toyota, Subaru or Nissan owner facing a failed engine, a JDM engine is often the lowest-mileage replacement available at any price.
JDM engine families we can source
These are the families importers stock most consistently. Whether a specific version is available for your car on a given day is a phone call, not a promise.
- Honda K-series (K20, K24) and older B-series and D-series for Civic, Accord, CR-V, Element and Acura RSX and TSX.
- Toyota 2AZ, 1ZZ and 2ZR four-cylinders for Camry, Corolla, RAV4 and Scion, plus 1JZ and 2JZ inline-sixes for Supra and Lexus IS and GS.
- Subaru EJ20 and EJ25 for Impreza, Forester, Legacy and Outback, including turbo versions.
- Nissan VQ35 and VQ37 V6s for Altima, Maxima, Murano, 350Z and 370Z, plus SR20 and RB series for enthusiasts.
- Mazda 2.0 and 2.3 four-cylinders for Mazda3 and Mazda6.
What changes between a JDM engine and your US engine
Usually less than people fear, but never nothing. Common differences: the intake manifold and throttle body, the exhaust manifold and its oxygen sensor positions, the EGR and emissions plumbing, the alternator and power steering pump, and on some engines the compression ratio or the ECU tune. Most installers swap the intake, exhaust and accessories from the old engine onto the JDM long block. We tell you which items your engine will need transferred before you order.
JDM engine sourcing FAQ
In our experience and the industry's, yes, when the importer is reputable and the engine is installed with fresh gaskets, timing components and fluids. Low miles do not excuse skipping the install checklist. Call and we walk you through what the warranty requires.
Commonly 40,000 to 70,000 miles, because Japanese cars are retired early. Importers state the mileage as best they can from the donor; it is not always verifiable to the mile, and we say so. Call for what is available for your engine.
For most Honda, Toyota, Subaru and Nissan applications the long block matches and the intake, exhaust and accessories transfer from your engine. Some models differ in wiring or emissions parts. We check against your VIN before quoting; call with it.
We source JDM engines per order from importers rather than holding stock, so the honest answer is a phone call away. Tell us the VIN and the engine code, and we check availability the same day.