Easily install instant oil pressure in Harley Shovelhead engines. Replace your stock Harley oil pressure relief valve spring with the SP-1.
Install instant oil pressure in your Shovel. Replace the stock Harley oil pressure relief spring. Easy installation!
Precise adjustable oil pressure for Shovel engines. Replaces the stock Harley oil pressure relief cap & oil pressure relief spring.
The Harley-Davidson oil pressure gauge! Tough, beautiful & accurate. This Stainless bodied 1 1/2" liquid filled oil pressure gauge is awesome!
Stop blowing excess crankcase oil out of you breather! E.R.T. Products has the parts & shows you how to fix this dangerous yet simple problem once and for all.
Click on each picture for installation details and more info on E.R.T. Products for Shovels
Since 1990, we've specialized in increasing Harley oil pressure. This cures noisy lifters and gains horsepower! Improve performance and quiet your engine at the same time.