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Item Number: 421580
Weight: 8 lbs.
Manufacturer: Roush Performance Parts
Warranty: 90 Days
FREE SHIPPING on all Orders in USA over $200.00.


Application: F-150: 2014, 2013, 2012, 2011

Installation Difficulty: Easy;Time: 1 hour;Required Tools: Garage tools


Fits 2011-2014 5.0L and 6.2L F-150's equipped with a ROUSH Supercharger System AND Upper (large) LTR. Please contact our sales team if you are unsure which Low Temperature Radiator you have.

Simple add-on kit to integrate with current Upper (larger) LTR Compact, all-aluminum design 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

90-Day Parts Limited Warranty included (ROUSH supplied parts only)

Part # 421580

Stay cooler longer with dual coolers! The 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 the 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 the Lower LTR Kit: Low Temp Radiator 3/4" Connecting Hose Mounting Bracket and Hardware Kit

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

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