Q: can a 2006 automatic engine fit into a 2002 manual 325i?

asked by on

can a 2006 bmw 325i automatic engine fit into a 2002 manual 325

My car has 202000 miles.
My car has a manual transmission.

I looked up the two applications. Those two engines use completely different castings for both the heads and the block and the flywheel (flex plate) is different as well which will make it incompatible with your transmission. If you search at Car-Part.com you will find an exact match for your car. Engine swaps on modern computer controlled vehicles must be exact matches because if you attempt to use an engine that is not cataloged as a direct cross reference for your car or truck, you will find that the engine computers are not interchangeable. Consequently, even if you can get a "different" engine to physically fit, it won’t start and run. And, you cannot flash re-program your existing computer to work with a new engine because all of these engines use different computer hardware, that is physically different PCM’s. In addition, the engine wiring harnesses are completely different, and the TCM (transmission control module) will have to be completely changed as well. As if that isn’t enough, if and once you substitute a new PCM and TCM they won’t work seamlesly, if at all, with the other computers on the vehicle such as the body control module but there are many other microprocessors involved as well. In the modern era, really the only way engine swaps using non cataloged, non interchangeable engines can work is if you literally carry over all electronic controls and wiring that are associated with the engine and the vehicle to your vehicle. If you are interested in an OEM (cataloged, direct interchange) engine/transmission replacement, YourMechanic professionals in certain locales can assist with that. Please simply inquire based on your locale. If you have further questions or concerns, do not hesitate to re-contact YourMechanic. If you have further questions or concerns, do not hesitate to re-contact YourMechanic.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. can a 2006 automatic engine fit into a 2002 manual 325i?

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: What's the best way to check for Evap small leak. I'm getting code P0442

P0442 indicates that you have a small leak in the evaporative emission system. Many times this is caused by a loose or faulty fuel cap. Make sure that the cap is tight and in good condition, so that it seals...

Q: Rubbers on propshaft

Two things you will want to look at. Number one, the propeller shaft needs to be balanced. Ensure there are no indications of propeller shaft weights missing. Also, when replacing the center bearing, the bearing has to be pre-loaded towards...

Q: Gear shift is broken off. The car is stuck in park and cannot be moved - 2002 Ford Explorer

Hello. If your vehicle's shifter was broken, then it will need to be replaced before the vehicle can be driven again. Once the shifter is replaced, I would also recommend taking care of the issue that is requiring you to...

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.