BMW E46 M3 S54 Long Tube Header System

Add serious performance to your BMW S54B32 / S54 engines with the BMW E46 M3 S54 Long Tube Header System, engineered to maximise power and flow. Engineered by 5150 AutoSport, this header set is built to the standards demanded by high-performance and motorsport BMW builds.

Key Features

• Designed for BMW S54B32 / S54 engines
• Engineered to maximise power and exhaust flow
• Mandrel-quality construction for durability
• Designed for high-performance and forced-induction builds
• Direct-fit engineering for the target platform
• Supplied by 5150 AutoSport, trusted by BMW enthusiasts worldwide

Product Details

BMW E46 M3 S54 Long Tube Header System – Stainless Steel Performance Upgrade

Maximize the power and sound of your BMW E46 M3 with a high-performance long tube header system designed for the 3.2L S54 engine. This system enhances exhaust flow, improving horsepower, torque, and throttle response. Built with precision-engineered 1-3/4" primary tubes, it is a direct bolt-on to your existing axle-back exhaust for a seamless installation.

Product Features:

• Constructed from premium 304 stainless steel for durability and corrosion resistance

• 3/8" thick laser-cut flanges provide a warp-free, leak-proof seal

• Hand-ported TIG-welded inlets ensure smooth airflow and optimized performance

• Merge collectors with scavenger spikes improve exhaust scavenging and power delivery

• Engineered for direct fitment on all 2001-2006 BMW E46 M3 models

For Off-Road and Racing Use Only This header system is intended for motorsport applications and is not legal for use on public roads. Please check local regulations before installation.

Compatibility

BMW S54 Models

• BMW E46 M3
• BMW Z3 M Roadster / Coupe
• BMW Z4 M Roadster / Coupe

Why Choose 5150 AutoSport?

• Purpose-built BMW performance engineering
• Components developed for high-power, real-world durability
• Trusted by serious BMW engine builders
• Specialist knowledge of forced-induction and high-RPM builds

Why Buy from R44 Performance?

R44 Performance supplies premium BMW performance and engine-building components trusted by enthusiasts worldwide.

• BMW specialists
• Genuine 5150 AutoSport products
• Fast UK & worldwide shipping
• Expert product support

Upgrade your BMW S54B32 / S54 build with the BMW E46 M3 S54 Long Tube Header System — available now from R44 Performance.

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.