COMP Cams Top Dead Center Stop Tool- 18mm Bolt Style H77803FS 1992-1999 GMC K2500 Suburban

1992-1999 GMC K2500 Suburban

1999-2014 Chevrolet Silverado 1500

25" wide and 1

2008-2009 GMC Envoy

2004-2005 GMC Envoy XUV

COMP Cams Top Dead Center Stop Tool- 18mm Bolt Style H77803FS 1992-1999 GMC K2500 SuburbanCOMP 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