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.
Hayden Automotive 677 Rapid-Cool Plate and Fin Transmission Oil Cooler Kit
Hayden Automotive 678 Rapid-Cool Transmission Oil Cooler 11" x 9.5" x 0.75"
Mishimoto MMB-F2D-001 Essential Protection Bundle Aluminum Radiator with Upper Support Bar
Derale Performance 15405 Plate & Fin Engine Oil Cooler Kit with Sandwich Adapter
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.