Overview — ISF3.8 CM2220 SCR Wiring 4021676
4021676 is the SCR wiring for the CUMMINS ISF3.8 engine with CM2220 controls, carrying the electrical signals and supply for the selective catalytic reduction system and its sensors. We can supply this wiring as well as related CUMMINS electrical components, in stock or available on order — welcome to enquire by part number.
Parts Characteristics
The wiring is assembled to the original harness layout with the correct conductors, connectors and terminals for the CM2220 system. The wire gauge and shielding match the original specification for reliable signal transmission, and the connectors lock positively at each sensor and module. The loom is routed and protected for the engine environment, with the original mounting points and conduit. As an OEM-spec harness, it restores the full SCR electrical circuit.
Applicable Models & Applications
This SCR wiring is used on CUMMINS ISF3.8 engines with CM2220 control modules, including installations where the SCR aftertreatment system is fitted. Typical applications include light trucks, generators, industrial equipment and construction machinery powered by the ISF3.8 family. Confirm the engine serial range and the SCR system configuration against the harness removed from your engine before ordering.
Maintenance & Replacement
Inspect the wiring for chafing, broken conductors and corroded connectors during electrical fault diagnosis. Check each connector and pin for damage, and confirm the harness is clipped correctly away from heat and moving parts. When replacing, disconnect the battery, route the new loom along the original path, and seat every connector until it locks. Verify the SCR system responds correctly and clear any stored codes after installation.
Price Reference (USD)
The reference price for this SCR Wiring (4021676) is approximately USD 60 – 250 per unit depending on harness size, quantity and shipping destination. This is a planning estimate only — confirm current pricing and availability with our sales team before ordering.
Value & Service
A damaged SCR harness causes fault codes and derates, so we verify 4021676 against the original CM2220 wiring layout and confirm the engine serial range and connector set before dispatch. We stock the harness and related ISF3.8 electrical parts and can ship worldwide with tracking. Our team can confirm the correct harness for your SCR configuration.
Racer Machinery is a dedicated construction-machinery parts supplier — send us your part number and engine model, and we will confirm fitment, price and lead time for this SCR wiring and related CUMMINS electrical components.
