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Replace the factory plastic coolant reservoir cap with this precision-machined billet aluminum upgrade. Designed for long-term durability and a clean OEM+ appearance, this cap adds both strength and style to your engine bay while retaining full factory functionality.
This upgrade eliminates the weak plastic construction found on stock caps and delivers a refined, performance-inspired finish that complements other engine bay enhancements.
This billet coolant reservoir cap is a simple yet effective upgrade for BMW owners looking to improve reliability, aesthetics, and engine bay presentation without compromising factory functionality.
Ships within 48 hours · Estimated delivery Jun 23 - Jun 28
US$40
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