Anyone out there know what an after market part number would be for the trailblazer '03 oil filter?

 

ahhhh
do you mean inline oil filter for the oil injection?

 

Yes, I like to get those locally instead of making the hour trek to the dealer.

 

I would imagine you could order an inline filter from Dennis Kirk.
Denniskirk.com

Someone correct me if I am wrong but I think it is just an INLINE FUEL FILTER.
KIRK sells HI FLOW units for $3.00
Might even get them from a Local auto parts.