Water Pump & Thermostat Housing Gasket Kit

Product Details

Keep your classic or late-model BMW operating at peak thermal efficiency on both the street and track. When performing routine cooling system maintenance or upgrading your water pump, replacing your old, flattened seals is mandatory to prevent fluid loss and unexpected pressure drops. This Genuine BMW Coolant Pipe and Thermostat Sealing Kit features the exact factory-issued rubber O-rings needed to seal the smaller engine block water line and the main thermostat unit housing. Rather than hunting down individual part numbers or settling for variable aftermarket fitment, this factory package delivers the high-durability seals your car relies on to maintain a pressurized, rock-solid cooling loop. Keep your engine safe from overheating and ensure your cooling system rebuild holds up to aggressive driving conditions.

Key Features

• Factory Fitment Precision: Manufactured by BMW to exact tolerances, ensuring zero gaps, binding, or alignment issues during installation.

• Essential Track Prep & Service Support: Ideal for preventative replacement during water pump, valley pan, or thermostat housing tear-downs.

• Restores Pressurized Integrity: Secures a robust, watertight connection across high-vibration and high-temperature mating surfaces.

• Direct OEM Replacements: Keeps your vehicle true to original engineering specifications without modifications.

Specifications

• Brand: Genuine BMW

• Kit Contents:

  • 1x Small Engine Coolant Pipe O-Ring (Part Number: 11531710055)

  • 1x Engine Coolant Thermostat Housing Gasket O-Ring (Part Number: 11511705408)

• Coolant Pipe O-Ring Dimensions: 19.5mm x 3.0mm

• Thermostat Housing Seal Dimensions: 76.5mm x 4.0mm

• Material: High-grade automotive elastomer / rubber

Prop 65 Warning

Kit Contents

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Lifetime Replacement

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