ROUSH Replacement Air Box Seal (2015-2017 Mustang NA, 2011+ F-150, Focus)

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Part #: 421931

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 web site. Prices for other territories and countries may vary due to shipping fees, duties, and other factors.

Orders placed via 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 ROUSH Replacement Air Box Seal (2015-2017 Mustang NA, 2011+ F-150, Focus):

  • Standard 48" length
  • Trim to fit
  • For use on 2015-2017 Mustang NA, 2011+ F-150 and Focus ROUSH intakes
  • Helps isolate intake from engine-bay

A direct service replacement seal for all ROUSH air boxes that use a bulb seal (2015-2017 Mustang NA, 2011+ F-150, Focus)

This seal helps isolate the intake from warmer engine-bay air.

Comes in standard 48" lengths, easily trimmed to fit specific applications.

WARNING: Cancer and Reproductive Harm -
Application Mustang 2015-2017, F-150 2011-2014, Focus 2013-2014
Difficulty Easy
Time 0 hours
Tools Basic tools
Instruction URL No
Install Video URL No