Interstate McBee - Cummins ISX/QSX HPCR Upper Engine Gasket Set - M-4376104

The Interstate-McBee Upper Engine Gasket Set (M-4376104) is built for high-performance Cummins® ISX/QSX High-Pressure Common Rail (HPCR) engines. This premium kit includes all the essential gaskets, O-rings, and seals for upper engine servicing and repairs. Designed to match OEM specifications, it ensures durability, heat resistance, and a long-lasting seal even under the most demanding diesel engine conditions.

Key Features:

• Designed for Cummins® ISX/QSX HPCR engine platforms

• Includes key gaskets for exhaust, turbo, intake, valve cover, injectors, and more

• Engineered to OEM quality standards

• Ideal for heavy-duty trucks, buses, and industrial equipment

Engine Compatibility:
Cummins® ISX/QSX High-Pressure Common Rail (HPCR) Engines

Kit Includes (BOM Parts List):

• M-186780 – Thermostat Seal (1)

• M-3678786 – O-Ring Seal (1)

• M-3678912 – O-Ring Seal (1)

• M-4299124 – O-Ring Seal (1)

• M-4299125 – O-Ring Seal (1)

• M-3682673 – Thermostat Housing Cover Gasket (1)

• M-3682710 – Exhaust Manifold Gasket (4)

• M-3682826 – Grommet Seal (2)

• M-3682940 – Exhaust Manifold Gasket (1)

• M-3683607 – Water Seal (1)

• M-3683814 – O-Ring Seal (5)

• M-2872717 – Injector Seal - Copper - XPI (6)

• M-3684284 – Sealing Washer (2)

• M-3684336 – Thermostat Housing Gasket (1)

• M-3684359 – Exhaust Outlet Gasket (1)

• M-3688347 – Intake Manifold Gasket (1)

• M-3685124 – O-Ring Seal (2)

• M-3685456 – Water Seal (1)

• M-3685535 – Turbocharger Gasket (1)

• M-3686368 – Rectangular Ring Seal (1)

• M-3686525 – Electrical Connector Seal (1)

• M-3033247 – O-Ring Seal (1)

• M-3687007 – Rectangular Strip Seal (1)

• M-3687051 – Seal Carrier (2)

• M-3922794 – Turbocharger House O-Ring Seal (2)

• M-3949708 – O-Ring Seal (1)

• M-3957131 – O-Ring Seal (1)

• M-3963988 – Sealing Washer (16)

• M-3963990 – Sealing Washer (2)

• M-4089255 – Cavity Plug (4)

• M-4934278 – Sealing Washer (2)

• M-3102802 – O-Ring Seal (1)

• M-4934279 – Sealing Washer (8)

• M-5264570 – Oil Drain Gasket (1)

• M-4966441 – Exhaust Out Connection Gasket (1)

• M-4985660 – Camshaft Cover Seal (1)

• M-4963857 – Injector Gasket (1)

• M-4984152 – O-Ring Seal (6)

• M-3104230 – Gasket (3)

• M-3104392 – Valve Cover Gasket (1)

• M-3347939 – O-Ring Seal (6)

• M-3627695 – O-Ring Seal (2)

• M-3678762 – Grommet Seal (1)

• M-3679932 – Camshaft Cover Gasket (1)

• M-3689567 – Cylinder Head Gasket (1)

• M-3680324 – Turbocharger Drain Flange Gasket (1)

• M-3682177 – O-Ring Seal (1)

• M-3963991 – Sealing Washer (1)

• CUM-CGK-212-WAR-0001 – Cylinder Head Install Warning (1) 

📞 Need help confirming fitment?  Call 1-800-228-8482 or email parts@southcentraldiesel.com 

⚠️ Opened packages are not eligible for return.