High Clearance Radiator Conversion (HCR) - 3.4L V6

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.

Note- the hose included in this kit is spec’d for 3.4L V6 trucks, but the HCR kit will also work for the 2.7L 3RZFE too. You will simply need to source a lower hose for a manual transmission truck.

Want a complete high clearance skid plate and radiator solution? TAP HERE

PREMIUM OE PACKAGE: $195; lead time ~1 week.

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.

• (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

HIGH PERFORMANCE PACKAGE: $305; BACKORDERED, lead time 4-8 weeks.

With a full aluminum construction and deeper body, this Champion unit dramatically improves your cooling performance due to increased fluid capacity and heat dissipation efficiency. And with a rating up to 550 horsepower, it can handle anything our 5VZ pigs can throw at it!

• (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-

• CSF recommends following factory specifications.
• 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.

Fan Shroud- Your factory shroud is reusable for this kit! However, there will be excess length at the bottom. It can be easily trimmed off with a razor blade to match the height of the new radiator, if you prefer. Champion is working on a plug and play option for us.

Maintenance- Overheating issues can be caused by a number of factors (dirty fluid, broken water pump, fan clutch, thermostat...) so don't expect a nice new radiator to fix your problem if something else is neglected. We are not responsible for overheating issues on your truck. Your cooling system is just that, a system. So treat it as such and maintain it!