Interstate-McBee M-3920691 Piston Wrist Pin Retaining Ring – 94–07 5.9L Cummins (Sold Individually)

OEM-style wrist pin retaining ring (circlip) engineered by Interstate-McBee for 1994–2007 5.9L Cummins B-Series applications. Direct-fit aftermarket replacement for Cummins 3920691. Built for reliable pin retention and long service life during high-load diesel use.

• Direct replacement: Matches OEM form/fit/function for fast, hassle-free installs.
• Durable spring steel: Maintains tension to keep the wrist pin securely in place.
• Sold individually: 2 clips per piston; 12 clips required for a complete 6-cyl engine.
• Aftermarket value: Interstate-McBee quality at a fraction of OEM pricing.

Specifications

Vehicle Fitment

Always verify by Engine Serial Number (ESN) for exact configuration.

• Dodge Ram 2500/3500 – 5.9L Cummins
  • 1994–1998 12-Valve 6BT (P7100)
  • 1998.5–2002 24-Valve ISB (VP44)
  • 2003–2007 24-Valve ISB (Common Rail)
• Note: Also commonly used on earlier 1989–1993 5.9L 12V applications; verify by ESN.

Installation Tips

• Use new clips during piston/wrist pin service; do not reuse old clips.
• Confirm the clip is fully seated in the groove—audible “snap” and visual inspection.
• Protective eyewear recommended; clips are spring-loaded.
• Follow the Cummins service manual for piston/pin orientation and clearances.

Warranty

Interstate-McBee new engine parts include manufacturer warranty coverage. Contact us for coverage details for this category.

Cross-References & Related Parts

• OEM: Cummins 3920691 (alt ref 3901706)
• Related: Wrist Pin Cummins 3934048 (1994–2002), 3934047 (2004.5–2007); Interstate-McBee Wrist Pin Bushing M-4891178.

Why Buy From CPP Diesel

• Expert ESN-verified fitment for B-Series Cummins.
• Fast shipping & easy returns.
• Diesel pros on call for build planning and parts bundling.

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