Interstate McBee - Cummins B/ISB/QSB 6B Upper Engine Gasket Set - M3804897

The Interstate-McBee Upper Engine Gasket Set (M-3804897) is specifically designed for Cummins® B/ISB/QSB 6B engine applications. This set includes all the essential gaskets and seals required for a reliable upper engine rebuild. Whether you're tackling preventative maintenance or a full repair, this kit delivers OEM-level quality to ensure your engine continues running at peak performance.

Key Features:

• Compatible with Cummins® 6B B/ISB/QSB engine platforms

• Complete kit includes injector seals, manifold gaskets, head gasket, and more

• Built to OEM specifications for precise fit and performance

• Trusted for agriculture, construction, and light/medium-duty diesel use

• Supported by Interstate-McBee’s full warranty coverage

Engine Compatibility:
Cummins® 6B / B / ISB / QSB Series Engines

Kit Includes (BOM Parts List):

• M-3906659 – Injector Seal (6)

• M-3906694 – Rectangular Ring Seal (1)

• M-3906773 – Washer (1)

• M-3910824 – Rocker Cover Bolt Seal (6)

• M-3912220 – Metal Gasket (1)

• M-3918188 – Washer (2)

• M-3919358 – Injector Sleeve (6)

• M-3921640 – Valve Stem Seal (12)

• M-3283335 – Cylinder Head Gasket (1)

• M-3923261 – Injector Seal (6)

• M-3923331 – Thermostat Seal (1)

• M-3927154 – Exhaust Manifold Gasket (6)

• M-3930324 – Injector Seal (6)

• M-3930906 – Valve Cover Gasket (6)

• M-3969988 – Gasket (2)

• M-3823921 – Gauge – Cylinder Head (1)

• M-3963988 – Sealing Washer (2)

• M-3935449 – Noise Isolator (6)

• M-3883284 – O-Ring Seal (1)

• M-3900808 – Washer (6)

• M-3937706 – Gasket – Turbo Oil Drain (1)

• M-3963983 – Sealing Washer (6)

• M-3938152 – Intake Manifold Gasket (1)

• M-3901356 – Gasket (1)

• M-3936876 – Rectangular Ring Seal (1)

• M-3902425 – Sealing Washer (1)

• M-3903380 – Banjo Seal (6)

• M-5264569 – Oil Drain Gasket (1)

⚠️ Opened packages are not eligible for return.