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Roush Mustang Polished Billet Radiator Cap (1996-2018)

Roush 421258 Polished Billet Radiator Cap gives your engine bay a clean and high-end look. The CNC-machined piece has stunning detail and takes your engine bay to a new level.

Part Number: 531 421258
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Give your engine bay a custom and clean look with this polished radiator cap. The CNC-machined billet aluminum construction is unrivaled and the piece is a great upgrade for any Mustang that wants to spruce up the engine bay. 

Add some shine under the hood. The engine bay is often forgotten when modifying your car. Most of the parts under the hood are black, giving the engine bay a boring and bland appearance. The addition of this polished billet aluminum radiator cap helps brighten it up and gives it a custom look. 

Features & Benefits: 
  • Made in the USA
  • CNC-machined
  • Billet aluminum
  • Polished finish
  • Roush engraved logo

CA Residents: Cancer and Reproductive Harm WARNING

Fitment & Features

Manufacturer: Roush

Installation Information:
Level of Difficulty: Easy
Install Time: About 5 Minutes
No Tools Required

Vehicle Fitment:
Fits Trim Levels: All
Fits Model Years: 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
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