Cummins Shoulder Isolator Cap Screw

The Cummins Shoulder Isolator Cap Screw (4936172) is a genuine OEM fastener designed for use on EPA13 6.7L ISB and QSB Cummins engines. This specialized shoulder bolt incorporates an isolator design to help manage vibration and maintain proper component alignment in critical mounting locations. Manufactured to Cummins’ exact specifications, it ensures proper fitment, durability, and long-term reliability—making it the correct replacement choice when servicing or repairing EPA13-era Cummins 6.7L applications.