5.9 Cummins HD Alternator Cable XDP XD421 SKU: xdpXD421

XDP HD Alternator Cable XD421 – 5.9 Cummins (Stock Alternator)
Replace the old, corroded, or damaged alternator cable on your 5.9 Cummins with the XDP HD Alternator Cable XD421. Damaged cables commonly cause improper charging, voltage drop, and added strain on the electrical system. This direct-fit 4 AWG cable restores reliable charging system operation and is built for long service life.
Key Features:

Direct-fit replacement for stock alternators

4 AWG heavy-duty cable construction

18″ length with fuse link

Heavy-duty crimped terminal ends with heat-shrink wrap for durability and corrosion resistance

Designed for dependable conductivity under demanding diesel conditions

Fitment:
2003–2007 Dodge Ram 2500/3500 with 5.9L Cummins (for use with stock-output alternators).
Note: For high-output alternators (180A and larger), use XDP part #XD422.
Warranty: 2 Year / Unlimited Mileage







This upgraded cable helps eliminate common charging issues caused by factory cable failure and provides a more robust connection for everyday driving, towing, and work use.[...]