IAG Revolve Coolant Reservoir Cap w/ Anodized Color Accent for 02-26 WRX, 04-21 STI, 05-09 LGT, 04-08 FXT, 13-26 BRZ

Get rid of the unattractive OEM yellow cap and upgrade your engine bay with the IAG Revolve Coolant Reservoir Cap. Designed to fit 2002-2026 WRX, 2004-2021 STI, 2005-2009 LGT, 2004-2008 FXT and 2013-2024 BRZ Subaru models, this stylish aluminum cap provides an exact fit for the factory reservoir while enhancing the appearance of your engine bay with a refined custom appearance.

IAG’s Revolve Coolant Reservoir Cap is a major upgrade over Subaru’s factory plastic cap, which is prone to wear and failure due to the extreme temperatures under the hood. CNC-machined at our facility in Maryland from 6061 billet aluminum, this cap is lightweight, durable and strong. It features a sleek black anodized finish that is resistant to corrosion while giving your engine bay a high-end appearance.

The IAG Revolve Coolant Reservoir features an anodized aluminum insert, available in your choice of silver, red, blue, black, gold, or purple. The insert is laser-etched to reveal a universal coolant symbol, but can be flipped to show the solid color. The inserts are easy to swap in seconds, thanks to the accessible design inside the cap—just use a small tool to pop the insert out and choose your preferred side.

For a more cohesive look under the hood, upgrade to an IAG Revolve Engine Bay Dress-Up Cap Kit. This complete set includes the Oil Fill, Brake Fluid, Coolant Reservoir, Washer Fluid, and Power Steering Reservoir Caps in your preferred color. If you want a custom touch, each cap is also available individually, allowing you to mix and match for a unique style.