Seller notes

Honda and Acura B & D Series Performance Oil Pump Shim Kit Shimming your oil pump has been a proven and time-tested modification when extra oiling is required for performance engine builds. This kit allows you to increase oil pressure by adding tension to the relief valve within the pump assembly. Additionally you can fix any pressure loss from porting your pump. You can expect an increase of 5-10 oil PSI at idle per 1mm shim, 20-30 PSI at higher RPMs on a stock pump. As a general rule of thumb,...

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