Mazda 3 Radiators and Coolers
This page brings together radiators and coolers for the Mazda 3, covering model years 2003–2025. The range includes radiators, automatic transmission oil coolers, and radiator supports in direct-fit and universal options. Choose your model year above and this page keeps only the radiators and coolers that fit your Mazda 3. Each listing is matched to our vehicle fitment data before it appears here.
Derale Performance 15502 Series 7000 Engine Oil Cooler Kit with Sandwich Adapter
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
Derale Performance 15302 Replacement Oil Cooler Core 6-Pass Tube & Fin
Keystone MA1225146 Radiator Support for Mazda Without Radar Cruise Control
Hayden Automotive 394 Transmission Line Fitting Kit for Ford Mercury
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
Hayden Automotive 153 Metal Mounting Bracket Kit for Transmission and Oil Coolers
What's here for your Mazda 3
- Radiators — OE replacement, direct-fit, and performance styles
- Automatic Transmission Oil Coolers — universal and direct-fit options
- Radiator Supports — front replacement kits and components
The widest selection here comes from DENSO, Hayden Automotive, Keystone, and Four Seasons, spanning a broad range of fitment styles and part types for the Mazda 3. Other categories Mazda 3 owners shop for: Mazda 3 Springs and Suspension Parts, Mazda 3 Shocks and Struts and Mazda 3 Brake Rotors and Drums, or browse all Mazda 3 parts and accessories.