Cylinder Head Bolt
The PAI Industries 640015 Cylinder Head Bolt (M16 × 2 × 175 mm) is a high-strength, steel, 12-point fastener engineered as a direct OEM replacement for Detroit Diesel part 23530768. Designed for Series 50 and Series 60 engines, it ensures secure, reliable torque and alignment—38 bolts required per head. Manufactured in ISO-certified U.S. facilities and backed by a 2-year factory warranty, it’s the trusted choice from Wofford Truck Parts for durable engine rebuilds.
$8.74
Specifications
The PAI Industries 640015 Cylinder Head Bolt is precision-machined steel, 12-point design, measuring M16 × 2 × 175 mm, intended for Detroit Diesel Series 50 and Series 60 engines. It replaces OEM part 23530768 (and alternate 8929123), delivering OEM-compliant strength and fit across 38 bolts per head configuration.
Constructed in ISO-certified U.S. manufacturing facilities, this bolt embodies durability, strict quality control, and detailed 3D-engineered tolerances—earning a 2-year unlimited mileage warranty. Offered by Wofford Truck Parts, it's ideal for engine rebuilds, ensuring exact fitment, reliable torque retention, and long-term performance.
Compatibility
Freightliner – FLD, Century, Columbia, Coronado, Argosy
Kenworth – T600, T800, W900
Peterbilt – 377, 378, 379, 386, 388
Western Star – 4700, 4900
Sterling – Acterra, A-Line
International / Navistar – select transit & line-haul models
Bus / Coach / RV / Specialty – various rigs using Series 50/60 engines
Alternative Part Numbers
Detroit Diesel 8929123
DDC23530768
DDP640015
PAI640015
PAI640015-019