See more: Oil Pump
Oil pump relief valve spring
Harley-Davidson engines operate at extremely low oil pressure. This premium quality, steel alloy, oil pump pressure relief spring actually increases engine oil pressure by 2-3 psi. This added oil pressure is necessary when using aftermarket cams and valve train components and is highly desirable for extended engine life. Fits 1936 thru 1999 Big Twin (except Twin Cam models) (OEM26207-83).