2011-2014 F-150 ROUSH Supercharger Low Temp Radiator Upgrade - LOWER

Part #: 421580

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Application: F-150 2011-2014
Installation Difficulty:
Easy ?

Financing available for purchases over $99 or more

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International Purchases & Shipping

Prices stated here are only for sales within the continental United States and ordered via the ROUSHperformance.com web site. Prices for other territories and countries may vary due to shipping fees, duties, and other factors.

Orders placed via ROUSHperformance.com can only be shipped to areas within the continental U.S. If you live outside the U.S., please orders must be placed through an authorized ROUSH dealer.

Product highlights for the 2011-2014 F-150 ROUSH Supercharger Low Temp Radiator Upgrade - LOWER:

  • Fits 2011-2014 5.0L and 6.2L F-150’s equipped with a ROUSH Supercharger System that came with the Upper (large) LTR.
  • Note: Some 2011-2014 5.0L & 6.2L F-150 ROUSH Superchargers came standard with this LTR already. If this LTR came standard with your supercharger, please refer to Part #421742 for an upgrade to your cooling system. Please contact our sales team if you are unsure which Low Temperature Radiator you have.
  • Simple add-on kit to integrate with the ROUSH Upper (larger) LTR systems, which come standard in all newer 5.0L & 6.2L F-150 ROUSH Supercharger systems.
  • This LTR has a compact, all-aluminum design, and includes all necessary mounting hardware for easy installation
  • Increases heat transfer surface area by 122 in. sq. (total surface increased to 422 in sq.)
  • Supports reduced manifold charge temperatures during wide-open throttle runs
  • Want the biggest and best upgrade possible? You can also upgrade your (already present) upper LTR to an even higher-capacity LTR (part #421742)
  • 90-Day Parts Limited Warranty included (ROUSH supplied parts only)

Stay cooler longer with dual low temp radiators!

This ROUSH Low Temp Radiator Upgrade (Lower LTR) is designed specifically for those owners of 2011-2014 5.0L and 6.2L Ford F-150’s equipped with a ROUSH R2300 Supercharger and Upper (large) LTR.

The ROUSH Lower LTR is a simple add-on kit that seamlessly integrates with the current, large-face upper LTR. Dual LTRs provide more efficient air cooling by increasing the heat transfer surface area, which results in lower intercooler water temperatures and provides superior air charge cooling. Adding the Lower LTR brings the total surface area to 422 in. sq. and also provides 1 qt. of additional cooling volume, leading to lower inlet temperatures.

ROUSH engineers spent many hours developing and testing this lower LTR to achieve maximum temperature reductions. During wide-open throttle runs, the manifold charge temperatures were reduced when running the dual LTR set-up.

The compact, all-aluminum design also allows for quick and easy installation. All of the necessary hardware is included in this lower LTR kit:

  • Low Temp Radiator
  • 3/4" Connecting Hose
  • Mounting Bracket and Hardware Kit

If you want the maximum cooling capacity and efficiency possible, you can also upgrade your (already present) large upper LTR to ROUSH’s even higher-capacity LTR (part #421742)!

This kit is protected by the ROUSH 90-Day Limited Warranty (ROUSH supplied parts only) from date of purchase.

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
Application F-150 2011-2014
Difficulty Easy
Time 1 hour
Tools Garage Tools
Instruction URL No