🔥 DIY Replace Leaking Radiator on Lancer Evolution with CSF 3127 | Step-by-Step Home Garage Repair 🔧

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In this in-depth DIY video, I walk you through the complete process of replacing a leaking radiator on a Lancer Evolution (Evo 8/Evo 9) with a high-performance CSF 3127 all-aluminum radiator—right from the comfort of your home garage. If you're dealing with coolant leaks, overheating, or an aging OEM radiator, this upgrade is the perfect solution to restore your Evo’s cooling performance and prevent engine damage.

This guide is designed for homeowners and car enthusiasts looking to take charge of their vehicle maintenance, build DIY skills, and save money on labor. Learn how to safely drain coolant, remove the stock radiator, install the CSF 3127, and refill your system—no shop visit required.

✅ Diagnose radiator leaks on the Mitsubishi Lancer Evolution
✅ Tools and supplies needed for a successful home garage install
✅ CSF 3127 radiator installation overview
✅ Tips for coolant system bleeding and leak prevention
✅ Personal growth through hands-on car DIY repair

Take control of your car's maintenance and enjoy the satisfaction of doing it yourself!

DETAILED REMOVAL STEPS

1. If the engine is still warm, wait until it has sufficiently cooled before removing the radiator cap. Failure to do so can cause pressured fluid to spray out and cause burns.

2. Drain the radiator by loosening the drain knob located near the lower right corner.

3. Remove lower radiator hose and retaining spring clamp. Remove the single electrical connector for the cooling fan.

4. Remove two 10 mm bolts on the radiator securing overflow reservoir hose. Disconnect hose and retaining spring from the radiator cap nipple. Drain and clean overflow reservoir if needed.

5. Remove upper radiator hose and retaining spring clamp.

6. Remove two 10 mm bolts securing both radiator upper support brackets.

7. Remove two 10 mm bolts mounting the fan to the radiator. Remove the fan. If there are obstructions, those parts will need to be removed to allow proper clearance.

8. Remove the radiator from the vehicle.

9. Cooling system capacity is roughly 1.65 gallons.

ADDITIONAL RESOURCES

CSF 3127 Radiator:
https://www.rockauto.com/en/moreinfo....

CSF 4503 Radiator Cap:
https://www.rockauto.com/en/moreinfo....

Evo 8/9 DIY Engine Dress-Up Bolt Kit:
https://www.evolutionm.net/forums/evo...

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