Overview – TURBO, HC5A 3801689 Series
Built to Cummins specifications, the TURBO, HC5A 3801689 serves Cummins mid-range diesel engines in truck, bus, construction and genset applications; the cross-referenced series below covers the most common substitutions.
Parts Characteristics
A Holset HC5A turbocharger: a cast iron turbine housing driven by exhaust gas, a polished aluminium compressor cover on the intake side, and a shaft and wheel assembly between them. It raises intake air density so the engine makes more power from the same displacement, and its condition is written directly into boost pressure, exhaust temperature and fuel economy.
Applicable Models & Applications
Used on the Cummins engine configurations that specify the HC5A frame size. Confirm the turbo part number and your engine serial before ordering, because turbine wheel trim and actuator calibration changed across the production run.
Maintenance & Replacement
Feed the new turbo clean oil. Replace the oil feed line and change the engine oil at the same time as the turbo – feeding a brand-new cartridge through contaminated or sludged oil shortens its life dramatically and is the single most common cause of repeat turbo failure.
Watch for the early symptoms: a drop in boost, a whistle or whine under load, rising exhaust temperature, or smoke where there was none. These point at the turbo system before they point at the engine, and catching them early keeps the repair to a turbo instead of a meltdown.
Diagnose the whole system before condemning the cartridge. A boost loss can come from a split hose, a stuck wastegate or a leaking intercooler just as easily as a worn wheel, and fitting a new turbo onto a leaking charge air system repeats the failure.
Prime the centre housing before start, torque the studs and fittings to specification, and run the engine through a gentle cycle on the first start. A turbo fitted and run correctly will outlast the interval that killed its predecessor.
Price Reference (USD)
For planning purposes, allocate USD 300 to USD 700 per TURBO, HC5A 3801689, excluding local import duties.
Value & Service
We supply brand-new HC5A turbochargers with the actuator and calibration confirmed against your engine serial, shipped with the gaskets needed for a clean install.
This TURBO, HC5A is supplied alongside the following series references: 3801697, 3801697RX, 3801724, 3801726RX, 3801803RX, 3801843, 3801845RX, 3801847, 3801848, 3801849, 3801884, 3801884RX, 3801885RX, 3803013RX, 3803103, 3803119, 3803231, 3803452, 3803452RX, 4025014RX, and more. Any of these can be quoted on request.
Racer Machinery ships the Cummins TURBO, HC5A 3801689 to over 100 countries, with packaging built for the rough handling of international freight.
