I'm upgrading my dead LS fuel pump to a GS-R/ITR. I have found someone local with a Civic Si pump... I have read these are the same as GS-R/ITR (and the Walbro kit has the same part # for both) but when I looked up the OEM part numbers, they are different. Does the Civic Si pump fit the LS/GS-R/ITR? I know the Si pump is supposed to flow the same as GS-R/ITR, but does it actually fit?

 

Need an answer within the next couple hours!!!

 

the SI will work...but why not get the walbro? car will thank you for it

 

Thanks for the info.

No need for a Walbro. I'm running 40% higher fuel pressure than stock on my LS with no plans for any significant increase. GS-R/Si/ITR pump flows ~64% more than the LS pump. I can get a used one locally for $25, or new for $50. Problem solved.