Scorpion Exhausts Catalyst replacement - E46 M3 2001 - 2006

BMW E46 M3 Cat Replacement Pipe 2001 to 2006

Free up exhaust flow and unleash the iconic S54 soundtrack with this cat replacement section for the BMW M3 E46. Precision built in the UK by Scorpion, it integrates seamlessly with the factory rear section or a Scorpion cat-back to deliver a harder-edged tone and crisper throttle response, while retaining excellent fit and finish.

Fitment: BMW M3 E46 3.2 S54, model years 2001 to 2006. Compatible with the original system and Scorpion cat-back setups.

Pipe diameter: 63.5 mm / 2.5 inches

Why enthusiasts choose this upgrade

• Improved gas flow for sharper response and a more engaging drive
• Deeper, more motorsport-inspired exhaust note without excessive cabin drone
• Engineered for a precise fit and reliable sealing
• Built in Britain to a high standard for long-term durability

Popular search terms this product answers

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What you can expect

Our team has fitted this cat replacement on customer cars and the feedback has been excellent. The result is a stronger, more characterful tone and that urgent feel E46 M3 owners love, with the convenience of a bolt-on solution designed to work with the standard rear box or a Scorpion cat-back.

Installation and support

Want it fitted by specialists who know these cars inside out? Book installation with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and availability.

Important information

This product replaces factory catalysts. For motorsport or off-road use where regulations permit. Check local laws and vehicle requirements. An ECU calibration or additional hardware may be required to manage emissions-related warnings on some vehicles.