Eaton K-4678CL 430 mm Clutch Kit — Volvo I-Shift / Mack mDRIVE

Product Overview

Genuine Eaton K-4678CL heavy-duty automated diaphragm-spring clutch kit for supported Volvo I-Shift and Mack mDRIVE applications.

Verified Eaton Specifications

• Current catalog number / SKU: K-4678CL
• Clutch size: 430 mm
• Torque capacity: 1,850 lb-ft
• Transmission type: Automated
• Facing material: Organic
• Input-shaft type: 50x46-24N
• Actuation: Push
• Pre-damper: Yes
• Damper spring count: 5
• Driven disc: 128995
• Cover assembly: 160521-33
• Release bearing / actuator: K-4516CL
• UPC: 840379362534

Manufacturer Wording Note

Eaton’s current SKU page contains “254MM” in its short description label while the same official specification table and model code identify the clutch as 430 mm. Eaton’s clutch literature also uses 254 mm as a damper-size designation. The product is therefore listed here by the verified 430 mm clutch size, while the physical package and complete application should be confirmed before shipment.

Application and Service Notes

Confirm the complete I-Shift or mDRIVE transmission model and serial number, original clutch, input-shaft configuration, flywheel, actuator, software and calibration requirements. Installation should follow Eaton publication CLMT4309 and the applicable Volvo or Mack service information.

Please confirm K-4678CL, 430 mm clutch size, original clutch number, transmission tag, input-shaft type, and all included components before ordering.

Parts Verification and Ordering Notice

Vehicle make and transmission family alone do not guarantee fitment. Confirm the original clutch label, transmission build, flywheel, input shaft, actuator, and package contents before ordering.

Technical References and OEM Documentation

• Eaton K-4678CL — Official Specifications and Resources
• Eaton 430 mm Diaphragm-Spring Clutch Product Information

Verified Service Publications

• CLMT4309: Eaton 430 mm Push-Type Self-Adjusting Clutch Installation Instructions
• CLSL1330: Eaton Diaphragm-Spring Clutch Flyer
• APSL0220: Eaton Heavy-Duty Aftermarket Catalog