Racingline Billet Coolant Expansion Tank Cap | VWR19G703

Enhance the durability and performance of your cooling system with the RacingLine Billet Coolant Expansion Tank Cap. Designed as a direct replacement for the factory plastic cap, this high-quality billet aluminum upgrade ensures optimal coolant pressure, improved longevity, and a premium aesthetic under the hood.

Why Upgrade to the RacingLine Billet Coolant Cap?

• Maintains Perfect Coolant Pressure – Engineered to prevent leaks and pressure loss, keeping your high-performance engine’s cooling system working at peak efficiency.
• Billet Aluminum Construction – Precision-machined from aerospace-grade 6061 aluminum, offering superior durability over cheap plastic OEM caps.
• Premium Anodized Finish – Polished and gloss-anodized in Midnight Black for a sleek, corrosion-resistant, and long-lasting finish.
• Advanced Internal Spring & Bleed-Off Mechanism – Features a Japanese-engineered pressure relief system, ensuring your coolant system stays within its optimal operating range.
• Direct OEM Replacement – Unlike cheap stick-on covers, this is a full replacement cap that seamlessly fits your factory coolant expansion tank.

Built for Performance & Longevity

Over time, stock plastic coolant caps lose their ability to hold pressure, reducing cooling efficiency. The RacingLine Billet Coolant Cap solves this issue by providing a precision-sealed, high-pressure solution that lasts.

• CNC-Machined for a Perfect Fit
• Designed for High-Performance Engines
• Compatible with a Wide Range of VW, Audi Models