LS, GASKET, SUMP, 12612350 focus all production processes are done

all production processes are done in-house according to strict Quality Control procedures with each spring proudly made in the USA

Improved Racing designed this billet aluminum rear galley plug (commonly known as the "barbell") for Gen III and IV GM LS series engines to improve oil flow and completely eliminate dirty engine oil from bypassing the filter

flanged zinc-plated steel distorted thread lock nuts are included for use with factory main cap studs

Pro Feature Set and Pro Link+ is provided FREE of charge (plus shipping)

LS, GASKET, SUMP, 12612350 focus all production processes are doneOEM Sump Gasket direct from GM! GM 12612350