Chevrolet K20 Radiators and Coolers
This page brings together radiators and coolers for the Chevrolet K20 spanning model years 1961–1986, including radiators, automatic transmission oil coolers, radiator caps, engine oil cooler mounting kits, and related hardware. The range covers OE replacement and heavy-duty styles across a broad span of model years. Pick your Chevrolet K20's year above to narrow the list to radiators and coolers with confirmed fitment. Every part shown is checked against our vehicle data.
Hayden Automotive 401 Ultra-Cool Tube and Fin Transmission Oil Cooler
Hayden Automotive 293 Universal Metal Oil Cooler Line Kit with 3/8" Tubes and 1/2" NPT Fittings
Four Seasons 53005 Rapid-Cool Plate and Fin Transmission Oil Cooler
Moroso 63467 Extended Billet Aluminum Water Filler Neck 5.75 Inch 45 Degree
Dorman 61109 Radiator Drain Petcock Plastic Black 8mm x 1.25 Thread
Hayden Automotive 210 Quik-Mount Nylon Mounting Kit for Transmission Coolers and Electric Fans
Hayden Automotive 251 Transmission Cooler Reinstallation Kit with Quick Connect
Hayden Automotive 253 Transmission Oil Cooler Mounting Bracket Kit
What's here for your Chevrolet K20
- Automatic Transmission Oil Coolers
- Radiators — OE replacement, performance, and heavy-duty options
- Radiator Caps
- Radiator Insulators and Mount Bushings
- Engine Oil Cooler Mounting Kits
- Radiator Drain Petcocks
The widest selection here comes from Hayden Automotive, Dorman, Four Seasons, and Spectra, offering kit configurations, universal-fit parts, and gasket-inclusive assemblies across the category. Other categories Chevrolet K20 owners shop for: Chevrolet K20 Body Frame Parts, Chevrolet K20 Springs and Suspension Parts and Chevrolet K20 Steering Gear and Parts, or browse all Chevrolet K20 parts and accessories.