Interstate-McBee M-3008400 Vacuum Pump Mounting Gasket – 89–02 5.9L Cummins 12V/24V

OEM-style vacuum pump mounting gasket for 1989–2002 Dodge Ram 2500/3500 with the 5.9L Cummins (12-valve & 24-valve). Built to factory dimensions for a direct fit at the pump-to-engine/gear-housing interface. Ideal for pump service or reseal jobs where a new gasket is required.

• Direct-fit replacement: Installs in the stock location to restore factory sealing.
• OEM-equivalent specs: Matches Cummins reference 3008400 for proper alignment and seal.
• Service best practice: Replace whenever the vacuum pump is removed (single-use gasket).
• Aftermarket value: Interstate-McBee quality at a budget-friendly price point.

Specifications

Vehicle Fitment

Always confirm by engine serial number (ESN) if possible.

• Dodge Ram 2500/3500 – 5.9L Cummins
  • 1989–1993 12-Valve (6BT)
  • 1994–1998 12-Valve (6BT)
  • 1998.5–2002 24-Valve (ISB)

Install Notes

• Clean both mating surfaces thoroughly; remove old gasket material without scratching the housing.
• This is a single-use gasket—replace any time the vacuum pump is removed.
• Follow Cummins service manual for torque sequence/specs; use sealant only where the manual specifies.

Why Buy From CPP Diesel

• ESN-verified fitment support from real diesel techs.
• Fast shipping and easy returns.
• Deep 5.9L B-Series parts selection for one-trip shopping.

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