Feuling, oil pump pressure relief springs

Used to increase cam support plate pressure relief pop-off pressure. Controls both pop-off pressure and oil flow in the bypass port. Note: Feuling recommends bench testing with the Feuling cam support plate pressure test tool, 566117, to set pop-off pressure to your preference and to ensure correct valve seal and valve operation.

Fits: > 99-17 Twin Cam (NU)