Racingline VWR Billet Expansion Coolant Cap
Precision Engineered For Perfect Performance
Meticulously machined with the latest CNC 5-axis technology.
Each cap starts life as a solid billet of aerospace-quality 6061 aluminum.
Sophisticated internal Japanese-made springing and bleed off mechanism.
Polished, then gloss-anodized in stunning Midnight Black to stay beautiful for year after year.
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