Opt Offroad
High Clearance Radiator Conversion (HCR) - 3.4L V6
High Clearance Radiator Conversion (HCR) - 3.4L V6
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Introducing the BEST cooling system upgrade for 96-02 4Runners & 95-04 Tacomas - the complete, bolt-on HCR kit from Opt Offroad! See below for lead times.
THE PROBLEM: This kit addresses one of the biggest design flaws on our powertrain: the haphazard low-hanging radiator... It extends several inches down past the frame, sacrificing front end ground clearance and just waiting to get smacked.
THE SOLUTION: Opt Offroad's HCR kit replaces that vulnerable stock radiator with your choice of a Premium OE Replacement or High Performance unit that mounts above your frame rails, where it should have been from the start! All kit options are a complete bolt-on replacement and easy install process. They also all come from manufacturers with a proven track record and warranties to back it.
Both radiator options are equipped with auto trans coolers. Both have the same factory inlet/outlet layout, aside from the lower hose fitting being a few inches higher. The included custom lower hose accommodates this change though.
Note- the hose included in this kit is spec’d for 3.4L V6 trucks, but the HCR kit will also work for 2.7L 3RZFE trucks too! If you have a 2.7L, you will simply need to source a factory lower hose for a manual transmission 2.7L truck.
Want a complete high clearance skid plate and radiator solution? TAP HERE
PREMIUM OE PACKAGE: $195; lead time IN STOCK.
With an aluminum core and plastic housing, the CSF unit is the best balance between performance and budget. This is a great option for anyone that is satisfied with their current cooling performance and simply wants a high clearance, premium replacement. CSF's reputation is exceptional, and we know many people who have been running their radiators for 10+ years with nothing but good feedback.
We've heard many stories from fellow owners that were left stranded, waiting for a tow after relatively minor accidents on the trails and highways... all preventable. Whether an off-roader or not, and whether you have decent skids or not, it's simply not a risk worth taking.
- (2) Stainless Steel Hose Clamps (Worm Gear)
- (1) Custom Lower Radiator Hose (Pre-Formed)
- (1) CSF Premium OE Replacement Radiator:
- Precision Molded Plastic Housing w/ Aluminum 1 Row Core
- Factory Bolt-On Design, with Trans Cooler Fittings
- 23 7/8" H X 28 1/8" W, Rated for Factory Power
- Cap included, we'll ship with hose & clamps
- (2) Stainless Steel Hose Clamps (Worm Gear)
- (1) Custom Lower Radiator Hose (Pre-Formed)
- (1) Champion Cooling Systems High Performance Radiator:
- TIG Welded 2mm Thick Aircraft Aluminum, 3 Row Core
- Factory Bolt-On Design, with Trans Cooler Fittings
- 23 1/2" H X 28 1/8" W, Rated Up To 550 HP
- 14-16 Fins per Inch, 3/8" Tube Spacing
- Billet Fill Neck w/ 16lb Cap Included
INSTALL HELP: Watch this YouTube video for tips: TAP HERE
IMPORTANT NOTES:
Coolant-- OE Replacement: CSF recommends following factory specifications.
- High Performance: Champion recommends Ethylene-based yellow/green coolant & distilled water only, to prevent premature wear on your radiator. Peak 10X is a great choice, as it is formulated to work with all vehicles and cooling systems, and has been thoroughly tested to work with these all-aluminum radiators. Using other coolant types can potentially affect your warranty with Champion. While "Asian Red" and "Toyota Pink" coolants are Ethylene-based, they have been known to cause issues with the full aluminum housings, and are discouraged for this setup.
