Angry Ass | S38B36 + B38 Vacuum Supply | Brake Booster Hose Kit

$86.63
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NOTE: We are currently in development of a replacement solution for the no longer available brake booster check valve!

The S38B36 & B38 use ports on the throttle bodies of cylinders #5 and #6 to provide vacuum assist to the brake booster, via two lines feeding into a non return valve to the booster. These hoses typically go unnoticed when hunting for vacuum leaks or chasing a hard brake pedal, but with these lines being tucked up next to the cylinder head and fire wall, they take on quite a bit of heat and abuse.

To make things easier and eliminate the guess work, we’ve assembled a complete kit of OEM lines that allows you to tackle this oft-ignored problem, preventively or otherwise.

ATTENTION: Replacement of these hoses requires removal from the check valve. This check valve is no longer available and being 30+ year old material can be extremely brittle and easily damaged. Use extreme caution during disassembly and reassembly as failure of this component can render the brakes without power assist!

Leave an email and we will be in touch.

NOTE: We are currently in development of a replacement solution for the no longer available brake booster check valve!

The S38B36 & B38 use ports on the throttle bodies of cylinders #5 and #6 to provide vacuum assist to the brake booster, via two lines feeding into a non return valve to the booster. These hoses typically go unnoticed when hunting for vacuum leaks or chasing a hard brake pedal, but with these lines being tucked up next to the cylinder head and fire wall, they take on quite a bit of heat and abuse.

To make things easier and eliminate the guess work, we’ve assembled a complete kit of OEM lines that allows you to tackle this oft-ignored problem, preventively or otherwise.

ATTENTION: Replacement of these hoses requires removal from the check valve. This check valve is no longer available and being 30+ year old material can be extremely brittle and easily damaged. Use extreme caution during disassembly and reassembly as failure of this component can render the brakes without power assist!

Additional Information

  • Assembled from OEM BMW lines and booster grommet

  • Includes both worm style and ear-style clamps, both are 304 stainless steel and made in the USA/Germany

  • The correct hardware type per BMW is an ear-style hose clamp, clamped with proper pinch pliers, but we have found it’s almost impossible to seal the hoses to the ports due to a lack of space (with the fuel injector harness rail in place). Due to this issue and wanting to avoid the risk of breaking the injector harness rail, or having to remove the entire throttle body set, we offer worm gear style hose clamps that you can tighten with a flat blade screw driver (or ideally a flexible 7mm nut driver such as Wera part number 391). The proper tool for installing the ear style hose clamps is Oetiker part number 14100498, if your car is further apart or you’re going for the Concours

System Includes

  • 3X OEM BMW lines

  • 1X OEM BMW booster grommet

  • 1X Adel clamp for hose

  • 6X Norma stainless steel worm style hose clamps

  • 6X Oetiker ear-style clamps

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