Keep coolant moving and help shed engine heat with the Spectra Premium Radiator CU730, a direct-fit replacement for a wide range of 1973-1986 Chevrolet trucks and vans — including the C10, C20, C30, K10, K20, K30, C10/C20 Suburban, Blazer and P-series — with the V8-5.7L, V8-6.6L and V8-7.4L engines. With 182 listed applications, see the Buyer's Guide tab for the full vehicle list.
Spectra Premium builds this radiator's structure and design to undertake the same durability and expectations as the OE unit. Signs the original radiator may need replacing include visible coolant leaks, persistent overheating, or a corroded, clogged core; diagnose the cause before replacing. Country of origin: China.
Manufacturer part number CU730.
Does this radiator include a transmission oil cooler?
Yes. It has an internal, plated transmission oil cooler with 3 plates and 1/2-20 UNF female fittings spaced 8.5 in apart to cool transmission fluid.
Does it come with an engine oil cooler or a mounting frame?
No. The attributes list both the engine oil cooler and the frame as not included with this radiator.
What engines does the CU730 fit?
It is listed for Chevrolet trucks and vans with the V8-5.7L, V8-6.6L and V8-7.4L engines. Check the Buyer's Guide tab to confirm your exact vehicle.
What is the core construction?
It uses a 2-row aluminum core with plastic tanks in a cross-flow design, with the inlet top left and outlet bottom right.
How do I know if my radiator needs replacing?
Signs include coolant leaks, engine overheating, or a corroded or clogged core. Diagnose the cause first, since overheating can have other sources.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
