I'm new here looked around on this but didn't find solution so this is why I am posting now - very sorry if this is a redundant question. Here's what I need to do/know. I have a 2009 Malibu LTZ 2.4L with 189,000 miles that needs a new motor. I have found a number of engines but they all ask if it is a NU1, NU6, or an NT7 - how can I tell the difference or know what I have? Is there a big difference? I have looked everywhere and the only emissions sticker I could find was under the hood which said EPA Class/stds: LDV/Tier2 and California Class/stds:PC/LEV2. I am pretty mechanically inclined and have swapped many motors - I just want to make sure I buy the right motor with the right stuff. Thanks in advance for your patience with this ford guy working on his wife's favorite car:) Would love to hear from you guys it's a really nice car. Thanks.

 

the best way is to find the rpo sticker which lists the build options. it will list the engine build code. rpo are 3 character codes. the sticker may be in the glove box or the underside of the spare tire cover.


a second method is to use the 8th character of the vin...which is the engine option.
the emission label under the hood displays the emission standard/class for the vehicle, not the engine build.
you could also google the 3 rpo codes you have listed nu1, nu6, nt7

 

Found the 3 character codes in the glove box - NT7. Thanks - really appreciate it!