Original BMW 80 mm Muffler Clamp for BMW M240i, 340i, 440i, and 540i (2016–2025)

Sized for an 80.0 mm pipe, this Original BMW muffler clamp joins sections of the exhaust on B58-powered BMWs including the M240i, 340i, 440i, and 540i built from 2016 through 2025. An exhaust clamp draws two pipe ends tight around each other so the joint holds its seal against exhaust pressure and the constant movement of the system on its hangers. BMW calls this part a muffler clamp, specifies its diameter as D=80,0 mm, and gives a weight of 139 grams. It is made in France and sold as one piece.

Original BMW Parts carry a 24-month parts warranty.

BMW's parts data shows production of this clamp from June 2015. Chassis covered here are the F22 2 Series coupe, the facelifted F30 sedan and F34 Gran Turismo, the F32 coupe, F33 convertible, and F36 Gran Coupe, and the G30 5 Series sedan. The diameter is the deciding detail; exhaust clamps are made to the exact pipe size they join, so match the 80 mm rating to your joint.

Technical Details

• Manufacturer: BMW, Original BMW Part
• Part number: 18-30-8-635-798
• BMW name: muffler clamp
• Diameter: 80.0 mm
• Weight: 139 g (0.3 lb)
• Production start: June 2015
• Engine: B58
• Made in France
• Sold as one piece
• Warranty: 24 months

Common Questions

What pipe size does this clamp fit?
BMW specifies an 80.0 mm diameter.

Does it fit the 2017 440i Gran Coupe?
Yes. The 440i Gran Coupe and 440i xDrive Gran Coupe are covered from 2017 through 2020.

For B58 exhaust hardware, PMB carries the factory BMW pieces.

Fitment & Compatibility

Confirm your model year and submodel against the table below before ordering. Send your VIN and PMB Performance will confirm the fit, drawing on more than 20 years in the trade.