COMP Cams Top Dead Center Stop Tool- 18mm Bolt Style Oil Pressure Sensor Single Diaphragm

Single Diaphragm

Chevy Fullsize Car 1955-56

Single-Layer Pyrovatex® FRC Construction

2008-2015 GMC Sierra 1500

Dual Dominator Carbs

COMP Cams Top Dead Center Stop Tool- 18mm Bolt Style Oil Pressure Sensor Single DiaphragmCOMP Cams Top Dead Center Stops are designed to positively stop the piston in order to find top dead center. The bolt style screws into the spark plug hole, while our universal plate type bolts across any cylinder bore when the heads are off. Designed for heads on applications, this piston stop features 18mm thread for use in Big Block Ford engines. Positively stop piston in order to find Top Dead Center (TDC); Bolt style screws into spark plug hole