Genuine 11537501777 Engine Coolant Pipe O-Ring
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Genuine

Genuine 11537501777 Engine Coolant Pipe O-Ring

Brand Genuine 11537501777
Fits BMW · 18 vehicles

OE direct replacement. Engine coolant pipe O-ring for sealing the cooling system.

Genuine replacement part from the original-equipment brand.

$21.86Free shipping
In stock · usually ships same day before 1pm CST
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BMW Engine Coolant Pipe O-Ring

This Genuine engine coolant pipe O-ring, part number 11537501777, is a direct-fit sealing component for select BMW cooling system applications. It is used at the water pipe return connection to help maintain a secure coolant seal on compatible BMW 540i, 740i, 740iL, and 750iL models.

Key Features

  • Genuine OEM-style engine coolant pipe O-ring
  • Part number 11537501777 for accurate ordering and service matching
  • Used at the water pipe return connection
  • Compatible with select 1998-2003 BMW 540i, 740i, 740iL, and 750iL applications
  • Fits BMW cooling system sealing service where a return pipe O-ring is specified

Fitment Details

  • Fits 1999-2003 BMW 540i, Water Pipe Return O-Ring.
  • Fits 1999-2001 BMW 740i, Water Pipe Return O-Ring.
  • Fits 1999-2001 BMW 740iL, Water Pipe Return O-Ring.
  • Fits 1999-2001 BMW 750iL, Water Pipe Return O-Ring.
  • Fits 1998 BMW 540i, From 9/1998; Water Pipe Return O-Ring.
  • Fits 1998 BMW 740i, From 9/1998; Water Pipe Return O-Ring.
  • Fits 1998 BMW 740iL, From 9/1998; Water Pipe Return O-Ring.
  • Fits 1998 BMW 750iL, From 9/1998; Water Pipe Return O-Ring.

What This Part Helps Address

  • Coolant seepage at the water pipe return seal
  • Loss of sealing integrity in the cooling system
  • Service replacement for a worn or flattened O-ring
  • Leak repair during BMW cooling system maintenance
  • Fitment-specific sealing needs on BMW 540i and 7 Series models

Installation Notes

Verify the part number 11537501777 against the removed seal before installation. Clean the sealing surfaces thoroughly and inspect the mating pipe and housing for wear, corrosion, or damage before reassembly. This part is listed for the water pipe return O-ring location on the specified BMW models.

Quality Assurance

Genuine parts are specified to match the original application requirements for the listed BMW cooling system service points. This helps ensure the correct seal profile for the intended fitment on BMW 540i, 740i, 740iL, and 750iL vehicles.

This part fits 18 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2003BMW540iN/AWater Pipe Return O-Ring
2002BMW540iN/AWater Pipe Return O-Ring
2001BMW540iN/AWater Pipe Return O-Ring
2001BMW740iN/AWater Pipe Return O-Ring
2001BMW740iLN/AWater Pipe Return O-Ring
2001BMW750iLN/AWater Pipe Return O-Ring
2000BMW540iN/AWater Pipe Return O-Ring
2000BMW740iN/AWater Pipe Return O-Ring
2000BMW740iLN/AWater Pipe Return O-Ring
2000BMW750iLN/AWater Pipe Return O-Ring
1999BMW540iN/AWater Pipe Return O-Ring
1999BMW740iN/AWater Pipe Return O-Ring
1999BMW740iLN/AWater Pipe Return O-Ring
1999BMW750iLN/AWater Pipe Return O-Ring
1998BMW540iN/AFrom 9/1998; Water Pipe Return O-Ring
1998BMW740iN/AFrom 9/1998; Water Pipe Return O-Ring
1998BMW740iLN/AFrom 9/1998; Water Pipe Return O-Ring
1998BMW750iLN/AFrom 9/1998; Water Pipe Return O-Ring