Genuine Nissan / Nismo Piston Oil Jet Squirter Assembly RB26DETT

Maintain optimal block health and precise thermal regulation with this factory-fresh, Genuine Nissan Piston Oil Jet Squirter Assembly. Designed explicitly for the legendary RB26DETT platform, this critical assembly mounts directly into the bottom end of the engine block to deliver a steady, high-pressure stream of engine oil directly to the underside of the piston crowns. ​By continuously lubricating the wrist pins and cooling the pistons, these squirters significantly reduce thermal expansion and lower overall combustion chamber temperatures under heavy boost. ​Why Replace During a Rebuild? ​The internal spring-loaded check valves inside the banjo bolts are highly prone to clogging, varnishing, or sticking open from years of oil sludge and debris buildup. A stuck-open or blocked jet compromises critical bottom-end oil pressure or starves the piston crowns of necessary cooling.