The NRW Design S65 Billet Block-Off Cap is a premium CNC-machined replacement for the stock plastic accessory block-off caps found on the BMW E9X M3’s S65 V8 engine. Crafted from solid billet aluminum and finished with precision, this block-off cap eliminates the weak, brittle OEM plastic parts that are prone to cracking and leaking over time.
Perfect for performance builds, high-temperature environments, or engines with upgraded components, this billet cap delivers improved durability and a clean, engineered visual upgrade for your S65 engine bay.
Features and Benefits
CNC-machined billet aluminum for superior strength and rigidity
Direct replacement for factory plastic S65 block-off caps
Cleaner, stronger, and more durable than OEM components
Precision fit designed for S65 engine accessory ports
Engine bay upgrade with motorsport-inspired aesthetics
Ideal for performance, racing, or high-stress builds
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TERMS (REQUIRED)
OFF-ROAD USE POLICY & EMISSIONS COMPLIANCE NOTICE
California Proposition 65 Warning:
This product can expose you to chemicals such as lead and lead compounds, which are known to the State of
California to cause cancer or birth defects or other reproductive harm. For more information, visit
www.P65Warnings.ca.gov.
Under the federal Clean Air Act (42 U.S.C. §7522(a)(3)), it is illegal to manufacture, sell,
install, or use any part that defeats or alters a motor vehicle’s emission control system for use on public
roads. Unless a product has received an Executive Order (EO) from the California Air Resources Board (CARB),
it is not legal for use or installation on any pollution-controlled vehicle driven on public highways.
Civil penalties up to $4,819 per violation per vehicle
Possible criminal penalties under the Clean Air Act
Revocation of registration or smog certification by DMV or local authorities
State & Local Regulations:
Some states have CARB-equivalent or independent emissions laws. Customers are responsible for verifying local
regulations before purchasing or installing emissions-related products.
Intended Use & Customer Certification:
All performance, racing, or competition parts sold by this company are intended solely for off-road,
closed-course, or competition use on vehicles that are never registered or used on public highways.
Company Policy Statement
Kies Motorsports, LLC sells and markets these products for lawful use only. We do not condone or authorize the
use of emission-control defeat devices or any modification that violates the Clean Air Act or state
regulations.
