OE Endurant Clutch With Flywheel - 430mm PACCAR Navistar E74-1021 K-4488CL NMU363-280-12 104200-1

• Includes New Flywheel: Arrives as a complete package with a precision-machined flywheel, guaranteeing a perfect, chatter-free mating surface and saving your shop hours of resurfacing downtime.
• Genuine OE Quality: Manufactured by Illinois Auto Truck to exact Original Equipment specifications, ensuring the precise engagement and release required by computer-controlled AMTs.
• Massive Torque Capacity: Rated to comfortably handle up to 1,850 lb-ft of engine torque, making it the perfect upgrade for heavy-hauling Cummins X15, PACCAR MX, and Navistar A26 platforms.
• Premium Organic Facing: Utilizes high-quality organic friction material paired with heavy-duty damping springs to aggressively minimize harsh driveline vibrations and extend the life of your transmission.
• Direct USA-Made Replacement: Proudly manufactured in the United States, serving as a seamless, bolt-on replacement for factory part numbers E74-1021, K-4488CL, and NMU363-280-12.

Maximize the performance of your automated manual transmission (AMT) with this premium OE Endurant Clutch With Flywheel by FleetPro Parts & Tires. Manufactured by Illinois Auto Truck to strict Original Equipment (OE) standards, this complete 430mm diaphragm-spring clutch kit is the standard for PACCAR and Navistar fleets running Endurant HD platforms. By including a brand-new, precision-machined flywheel in this kit, you guarantee a flawless mating surface, eliminating the risk of clutch chatter and the downtime of sending your old flywheel out for resurfacing. We stock these heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets and owner-operators nationwide.

Complete AMT Performance: The OE Endurant Clutch With Flywheel Advantage

This OE Endurant Clutch With Flywheel (Part # NMU363-280-12) features a state-of-the-art push-type, self-adjusting design specifically calibrated for automated shifting environments. To ensure long-term durability and ultra-smooth engagement, it utilizes premium organic facing material and cushioned damping springs engineered to absorb severe driveline shock. Rated for a massive 1,850 lb-ft of engine torque, this assembly easily handles the raw pulling power of the Cummins X15, PACCAR MX-13, and Navistar A26 engines without sacrificing service life.

As we continue to build the largest inventory of commercial truck parts in Illinois, we prioritize drivetrain components manufactured to rigorous standards. Proudly manufactured in the USA by Illinois Auto Truck, this complete OE-quality kit serves as a direct professional-grade replacement for PACCAR E74-1021 and Eaton K-4488CL. Upgrade your heavy-duty rig today with a perfectly matched clutch and flywheel combo that ensures optimal fuel efficiency and incredibly smooth shifting.

Vehicle Fitment & Compatibility

This heavy-duty OE clutch and flywheel kit is precision-engineered for the following commercial automated transmission applications:

• Transmission: Endurant HD Automated Manual Transmissions (AMT)
• Engine Compatibility: Cummins X15, PACCAR MX (MX-11 / MX-13), Navistar A26
• Make Fitment: Peterbilt, Kenworth, and International Trucks

Direct Replacement & Cross-Reference Numbers:

This complete assembly serves as a direct exact-fit replacement for the following OEM part numbers:

• PACCAR / OEM: E74-1021, E741021, 104200-1
• Aftermarket / Eaton Interchange: K-4488CL, K4488CL, NMU363-280-12

Technical Specifications

• Component Type: Complete Clutch Assembly (Includes Flywheel)
• Diameter: 430mm (16.93")
• Design Style: Push-Type, Self-Adjusting (AMT specific)
• Friction Material: Premium Organic Facing
• Torque Rating: 1,850 lb-ft
• Product Level: OE (Original Equipment)
• Manufacturer: Illinois Auto Truck (Made in the USA)
• Distributed By: FleetPro Parts & Tires