Interstate-McBee Capscrew - Cylinder Head - M-3917729

The M-3917729 Cylinder Head Capscrew is a high-strength fastener designed to secure the cylinder head to the engine block in Cummins® diesel engines. Built to OEM specifications, this capscrew ensures uniform clamping force to maintain head gasket integrity and resist thermal and mechanical stress during engine operation. It’s ideal for use in engine rebuilds, head replacements, or top-end servicing on heavy-duty diesel applications.

Key Features:

• Direct replacement for Cummins® part number 3917729

• Used to secure cylinder head to engine block

• Heat-treated alloy steel for superior strength and fatigue resistance

• Delivers consistent torque and optimal clamping pressure

• Engineered to withstand high-temperature and high-pressure conditions

• Suitable for Cummins® ISC, ISL, QSC, and related engine platforms (verify specific fitment)