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Connecting Rod Bolt Cummins 3944679 | 394467900, C3944679, J944679

Manufacturer: Cummins
Part#: 3944679-EN
Cross References:
Price on request
Available to order

High-strength connecting rod bolt designed for Cummins ISC, ISL, QSC, and QSL engines. Ensures secure fastening of the connecting rod cap to maintain engine integrity and performance.

Description

High-Strength Connecting Rod Bolt for Cummins Engines

The Cummins 3944679 Connecting Rod Bolt (also referred to as a connecting rod cap screw) is a critical fastening component engineered to secure the connecting rod cap to the rod assembly. Designed to withstand extreme tensile loads and cyclic stress within the combustion chamber, this high-strength bolt ensures the structural integrity of your engine’s rotating assembly.

Technical Specifications:

  • Thread Size: M12
  • Thread Pitch: 1.25
  • Length: 63 mm
  • Part Number: 3944679

Engine Compatibility:

This connecting rod bolt is compatible with the following heavy-duty Cummins engine models:

  • Cummins ISC 8.3
  • Cummins ISL 8.9
  • Cummins QSC 8.3
  • Cummins QSL 8.9

Key Features & Benefits:

  • Precision Engineered: Manufactured to exact tolerances to guarantee a perfect fit and reliable clamping force.
  • Durable Construction: Built from premium-grade alloy steel to resist fatigue, stretching, and shear failure under high-RPM operations.
  • Critical Engine Protection: Prevents rod cap separation, safeguarding your engine block and crankshaft from catastrophic damage.