(18307560778) - Clamping Sleeve-55mm (Muffler to Cat) - E36, E32/E34 (8cyl), E46 (Genuine BMW) (2 available)

BMW part number 18307560778 is a Genuine BMW 55mm Exhaust Clamping Sleeve (officially listed as a "Clamping Bush" or "Converter & Pipe Clamp"). It is the standard sleeve used to connect separate midsection or muffler exhaust pipe sections that feature a 55mm outer diameter. It comes as a complete assembly with its own heavy-duty structural locking bolts and hardware included. (19g)

• Diameter: 55mm
• Length: 70mm
• Material: High-grade Stainless Steel
• Purpose: Primarily used for "cut and clamp" factory exhaust repairs or joining mid-pipes to rear silencers.
• Superseded Part Numbers: Replaces older/alternative BMW part numbers 18201742073 and 18307525639. 

BMW 3 Series (1991–1992, 2006–2013)

• E30 Chassis (1991–1992): 318i, 318is (1.8L L4 engine). 
• E90 / E91 / E92 / E93 Chassis (2006–2013):
  • 325i, 325xi, 328i, 328xi, 328i xDrive (3.0L naturally aspirated inline-6).
  • 330i, 330xi.
  • 335i, 335xi, 335i xDrive, 335is (3.0L N54 & N55 Twin-Turbo inline-6).
  • 335d (3.0L Twin-Turbo Diesel).
  • E90 / E92 / E93 M3 (4.0L S65 V8 engine). 

BMW 5 Series & 6 Series (1997–2010)

• E39 Chassis (1997–2003): 528i (1997–2000), 540i (V8), and E39 M5 (V8).
• E60 / E61 Chassis (2004–2010): 545i, 550i (V8 models).
• E63 / E64 Chassis (2004–2010): 645Ci, 650i (V8 luxury coupes/convertibles).

BMW 7 Series & 8 Series (1995–2008)

• E31 Chassis (1994–1997): 840Ci, 850Ci, 850CSi.
• E38 Chassis (1995–2001): 740i, 740iL, 750iL.
• E65 / E66 Chassis (2002–2008): 745i, 745Li, 750i, 750Li. 

BMW X Series & Z Series (2000–2016)

• X3 SUV (2007–2012): E83 and F25 generations.
• X5 SUV (2000–2013): E53 and E70 generations (including 3.0i, 4.4i, 4.8is, xDrive35d diesel, and xDrive50i V8).
• X6 SAC (2008–2014): E71 generation (including xDrive35i and xDrive50i