Since 2008
We only sell the part
that actually matters.
Engine Junction started as a machine shop in Detroit that kept being asked the same question: where do I get a good one? Eighteen years later that is the whole business — sourcing, building and documenting engines, and nothing else.
- 18
- Years supplying engines
- 4,200+
- Engines shipped
- 36
- Countries delivered to
- 0.4%
- Warranty claim rate
How we got here
A machine shop that got tired of bad listings
For years we rebuilt engines that customers had bought elsewhere. Too many of them arrived described as “low mileage” with no evidence, or “rebuilt” by someone who had replaced a gasket and painted the block. People were spending five figures on a photograph and a phone call.
So we started publishing everything we would want to see ourselves. Bore measurements. Leak-down numbers. The actual dyno plot, not a manufacturer’s brochure figure. Where a used engine came from and how far it had run.
Then we added the 3D models, because the question we could never answer over the phone was whether the accessory drive would clear a particular crossmember. Now you can turn the engine over yourself before you commit to freight.
Build floor
Six assemblers, two machinists and a dedicated dyno operator. Nothing is subcontracted, so nothing is unaccounted for.
Documentation
Every engine gets a file: measurements, part numbers, torque records and the plot from its dyno pull.
Fitment desk
The people answering the phone have assembled these engines. They will tell you when a swap is a bad idea.
Our standard
What a listing has to prove before it goes live
Measured, then described
Bore, deck, crank journals and ring gaps are recorded before assembly. If a figure is outside service limits, the part is replaced, not rounded.
Run before it ships
Remanufactured and crate engines run on the dyno through a full break-in cycle. The plot goes into the crate with the engine.
Provenance on used units
A used engine gets listed only with a documented source, a mileage record and compression figures we took ourselves.
Fitment we have actually done
The fitment list on a listing covers swaps we or our customers have completed — not everything the catalogue theoretically allows.
Not sure what fits? Describe the car.
Send us the chassis, the transmission and what you want out of it. A builder will come back with the two or three engines that actually make sense — and the ones that do not.