Q: Rebuilt & replaced engine confirmation

asked by on

Hello I recently had a replaced and rebuilt engine put into my vehicle and I would like to know how I can confirm that it is a different engine than the one originally placed in the vehicle. I've heard that the vin number on the rebuilt engine should NOT match the VIN number on the dashboard. Is this correct?

Hi and thank you for contacting YourMechanic. Yes, you are correct. If the repair shop that performed the work claimed they "replaced" your engine then the serial number on the engine block will be different. If the engine was "rebuilt" then the serial number will be the same if the rebuilt the engine that already existed in the engine. You should be able to contact your local dealer and they can do a build search for you to obtain how the car came off the assembly line, including the original serial number from the engine. If you are not the original owner (if you are the 2nd -3rd owner etc.), this could make it very difficult to prove due to the vehicle being in possession of the another owner who could have also replaced the engine.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Rebuilt & replaced engine confirmation

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: engine rebuild

Hello and thank you for contacting YourMechanic. This question depends on the amount of experience you have. If you have little to some experience, then the engine rebuild could take you upwards of 2 to 3 weeks with taking your...

Q: what other motor can i use to replace the other motor

Q: Hard shifting when engine warms up

Hello there, many different things that can cause the transmission to shift hard. The most common causes include: low fluid level, shift solenoids, torque converter, or the transmission linkage. If you decide to get this fixed, consider enlisting a qualified...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.