Overview – Cooler 3166309-90
3166309-90 is the cooler used on CUMMINS engines to transfer heat from the engine fluid circuit, keeping operating temperatures within the designed range. We can supply this cooler as well as related CUMMINS cooling system components, in stock or available on order – welcome to enquire by part number.
Parts Characteristics
The cooler is built to the original core and tank specification, sized for the heat load of the engine application. The core passages are clean and sized for the rated flow, and the tanks and fittings accept the original hoses and gaskets. The construction resists corrosion from the cooling medium and withstands the operating pressure and temperature of the circuit. As an OEM-spec cooler, it restores the designed heat rejection for the engine.
Applicable Models & Applications
This cooler is used on CUMMINS engine families where the specified heat exchange duty applies, covering construction, industrial, generator and marine applications. Confirm the core size, fitting positions and the fluid circuit against the cooler removed from your engine before ordering.
Maintenance & Replacement
Check the cooler for blocked cores, corroded tanks and leaking joints during routine service. A restricted or leaking cooler causes operating temperatures to rise and can trigger derates or alarms. When replacing, flush the circuit, fit new gaskets and hoses, and confirm the cooler orientation and flow direction match the original. Pressure test the circuit after installation and check for leaks at operating temperature.
Price Reference (USD)
The reference price for this Cooler (3166309-90) is approximately USD 120 – 450 per unit depending on core size, brand grade, quantity and shipping destination. This is a planning estimate only – confirm current pricing and availability with our sales team before ordering.
Value & Service
An undersized or mismatched cooler cannot reject the engine heat load, so we verify 3166309-90 against the original CUMMINS core specification and confirm the circuit and fitting positions before dispatch. We stock the cooler and related cooling system parts and ship worldwide with tracking. Our team can confirm the correct cooler for your engine application.
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 cooler and related CUMMINS cooling system components.
