Arlen Ness, oil pressure gauge kit. Smooth - 99-17 Twin Cam (excl. Touring with stock oil pressure gauge) (NU) 500551 The mechanic's stethoscope is used

The mechanic's stethoscope is used to pinpoint mechanical engine noise

while the expanded bag provides 3150 cubic inches (EU: 51

PUMP CAP (2 NEEDED)

The internal venturi was designed to allow for maximum air flow

Note: Will retrofit to 65-80 models

Arlen Ness, oil pressure gauge kit. Smooth - 99-17 Twin Cam (excl. Touring with stock oil pressure gauge) (NU) 500551 The mechanic's stethoscope is usedChrome plated bracket. Pressure gauge features a stainless housing, glass lens and glycerin filling for vibration damping. Bracket is CNC machined billet aluminum. Kit includes 60 PSI gauge, billet bracket & gauge cone, stainless oil hose and necessary hardware.