Interstate-McBee M-3937214 Piston Cooling Nozzle – 94–02 5.9L Cummins (12V/24V)

Restore factory piston oil-jet cooling on your 1994–2002 5.9L Cummins with this OEM-style Interstate-McBee M-3937214 piston cooling nozzle (oil squirter). Designed for direct fit and dependable lubrication under load, it helps control piston temperatures for durability and consistent performance.

• Direct-fit replacement: Drop-in nozzle matches OEM geometry for proper aim and flow.
• OEM-style construction: Precision-machined for reliable sealing and long service life.
• Aftermarket value: Interstate-McBee quality at a fraction of OEM boxed pricing.
• Sold individually: Order per cylinder as needed (typical 6 per 6-cyl engine).

Specifications

Vehicle Fitment

Verify by engine serial number (ESN) when possible.

• Dodge Ram 2500/3500 – 5.9L Cummins:
  • 1994–1998 12-Valve 5.9L
  • 1998.5–2002 24-Valve ISB 5.9L

Install Notes

• Always clean the bore and inspect the jet for debris; verify nozzle aim toward piston underside.
• Use the Cummins service manual procedures and torque specs for your ESN.
• Prime lubrication and verify oil pressure after installation.

What’s Included

• (1) Interstate-McBee piston cooling nozzle (M-3937214); seals as required by service manual (not included unless noted).

Why Buy From CPP Diesel

• Expert B-series fitment support and ESN verification.
• Fast shipping options and easy returns.
• Curated components to complement your rebuild (pistons, pins, rings, bearings, seals).

FAQ