Trailblazer 4.2L Oil filter upgrade?

[downeastxj]

So the wife and I bought a 2003 Trailblazer EXT with a 4.2l back in May. So far it has been great, no problems at all. It's time for it's first oil change. I looked on the Trailblazer forums to see if I could find out any info about a larger oil filter for it, like using the Wix 51515 on our 4.0's. Well those sites are not quite up to the same level of tech as . Any one know if there is a larger filter that will fit. The Wix part number for the stock filter for a 2003 GM 4.2 is 51522.

Thanks

 

[knever3]

I'd have to say that the stock one should be big enough. I use the s-10 style for the 4.3 for my 3.8 in my Grand Prix GTP and it's the same size as your stock one for that truck. I would just buy a good quality filter such as the Wix or an AMSOIL filter and call it good for 5k.

 

[Johnnie Walker]

If you contact a dealer you can ask for part numbers. I forget the exact numbers, but there is a short and a tall filter they can use. Just cross reference that with wix/napa gold filter.
I believe that the ACdelco is a PF61, which is a taller filter. A good quality filter will be just fine.

 

[JohnX]

pf61 is what I put on them.