Mercedes G63 AMG W463 High Flow Sports Catalytic Converters – Pair (200 Cell)

Unlock the true potential of your G63 AMG's 5.5L BiTurbo V8 with the Promod Works high-flow sports catalytic converters. Engineered as direct-fit replacements for the heavy, restrictive OEM catalytic converters, this pair is precision-crafted from T304 grade stainless steel with 200-cell high-flow catalyst cores — dramatically reducing exhaust backpressure and liberating power and torque that the factory system holds back.

The result is sharper throttle response, stronger mid-range and top-end performance, a deeper and more characterful exhaust note, and a meaningful reduction in system weight compared to the factory units. When paired with the Promod Works valved catback exhaust system, the transformation is extraordinary.

Sold as a pair — left and right included. Direct bolt-on fitment. No cutting or welding required.

Key Features

• 200-cell high-flow HJS catalyst cores — significantly freer-flowing than restrictive OEM units
• T304 grade stainless steel construction — fully TIG welded throughout for maximum durability
• Direct bolt-on fitment — precision-engineered to match OEM mounting points exactly
• Sold as a matched pair — left and right hand side included
• Promod Works branded catalyst housings — quality you can see
• Substantial weight reduction vs OEM — approximately 14kg saved across the pair
• Compatible with OEM and aftermarket catback systems
• Increased power and torque — measurable gains through reduced backpressure
• Enhanced exhaust note — deeper, more aggressive V8 sound character
• Lifetime quality guarantee

Performance Gains

The factory catalytic converters on the G63 AMG are a notable restriction in the exhaust flow path. Replacing them with 200-cell high-flow units reduces exhaust gas resistance substantially, resulting in: improved throttle response and engine breathing, enhanced torque across the mid-range, stronger top-end power delivery, and a more expressive, V8-worthy exhaust note — especially when paired with a valved catback system.

Vehicle Compatibility

Please confirm your exact build year and engine code before ordering. Not compatible with W464 (2019+) 4.0L BiTurbo V8 models.

Legal Notice

Important: These high-flow sports catalytic converters are supplied for off-road, track, and motorsport use only. Fitting these parts to a road-registered vehicle in the UK or EU may not comply with current emissions legislation. It is the buyer's sole responsibility to ensure compliance with all applicable local laws and regulations. Promod Works accepts no liability for improper use on public roads.

What's Included

• Left-hand high-flow sports catalytic converter
• Right-hand high-flow sports catalytic converter
• All mounting clamps and fitting hardware

Installation Notes

Direct bolt-on replacement requiring no cutting, drilling, or welding. Professional installation by a qualified exhaust specialist is strongly recommended. Lambda/O2 sensor ports are retained for compatibility with OEM sensor wiring. Approximate installation time: 2–3 hours.

About Promod Works

Promod Works is a UK-based performance and styling specialist focused on delivering high-quality aftermarket components for prestige and performance vehicles. Every product is sourced, quality-checked, and backed by our team's extensive knowledge of high-performance vehicle modification.

This product is made to order. Lead times may apply — please contact us for current availability and delivery estimates. Professional installation recommended.