BSAU110

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  • Rubber Vacuum Air Brake Servo Hose Hoses UK 13mm 1 Metre

    Rubber Vacuum Air Brake Servo Hose

    SAEJ1402 & BSAU110 Fibre Braided Oil Resistant
    From £5.71
    From £5.71

BSAU110

The BSAU110 collection is meticulously engineered for high-performance servo air brake applications, meeting the stringent standards required for automotive braking systems. Designed to provide reliable performance and safety, these hoses are essential components in both commercial vehicles and passenger cars where effective braking is crucial. Complying with BSAU110 specifications, these hoses ensure that operators can rely on their braking systems for optimal safety and responsiveness.

Constructed from premium-quality materials, the BSAU110 servo air brake hoses offer outstanding resistance to air pressure, abrasion, and extreme temperatures. This robust construction is critical in preventing hose degradation and maintaining integrity under the demanding conditions typically encountered in braking systems. Designed to withstand high pressures and harsh environments, these hoses provide the durability needed for reliable brake performance in a variety of driving conditions.

Flexibility is a key feature of the BSAU110 collection, enabling easy routing and installation in complex brake line configurations. These hoses are lightweight yet sturdy, allowing for straightforward handling during installation while ensuring a secure fit within the vehicle's braking system. Their flexibility facilitates efficient movement, accommodating the necessary adjustments and positioning without compromising performance.

Safety is paramount in braking applications, and the BSAU110 hoses are built with reinforced layers to enhance burst resistance and prevent leaks. This design ensures that the hoses can handle the high-pressure demands of servo air brake systems without the risk of ruptures or failures, providing peace of mind for drivers and operators. The adherence to BSAU110 standards guarantees that each hose undergoes rigorous testing to meet the highest quality and safety benchmarks, making them a trusted choice for servo air brake systems.

The BSAU110 hoses are also designed to perform effectively across a broad temperature range, maintaining flexibility and structural integrity in both high and low temperatures. This adaptability makes them suitable for various climates and driving environments, ensuring consistent brake performance regardless of external conditions.

What is this hose used for?
It serves two closely related jobs: vacuum lines feeding a brake servo on cars and light vehicles, and pneumatic control lines in commercial vehicle braking systems. Both need a hose that will not collapse under negative pressure, resists oil contamination from the engine bay, and survives years of heat and ozone exposure without hardening. It is built to BSAU110 and conforms to SAE J1402.

Why can't I use ordinary rubber hose on a brake servo?
Because a servo line runs under vacuum, not pressure. Ordinary hose without adequate wall reinforcement will slowly draw shut, and a partially collapsed servo hose gives a hard pedal that comes and goes - a genuinely dangerous and very hard fault to diagnose. This hose is reinforced with high-tensile braided fibre specifically so it holds its bore under vacuum.

What sizes and lengths do you offer?
Internal diameters of 9.5mm and 13mm, cut to order from 1 metre up to a 50 metre full coil. Those two sizes cover the overwhelming majority of servo and vacuum applications. Measure the outside diameter of the servo spigot and the manifold takeoff and match the hose bore to it - the hose should need a firm push to go on, not slide on loose.

Will it resist oil and fuel contamination?
It is oil resistant, which matters because a servo line sits in an engine bay where oil mist, splashes and fuel vapour are unavoidable. That resistance is why it lasts where a general-purpose rubber hose goes soft and swells. It is not intended as a fuel delivery hose though - for carrying fuel use our SAE J30 R6 rubber fuel hose or fluorosilicone-lined silicone.

What material is it and why does that matter?
A synthetic rubber inner tube with braided fibre reinforcement and an ozone-resistant synthetic rubber outer cover. Ozone resistance is the reason the outer does not craze and crack after a few summers under the bonnet - that surface crazing is usually the first visible sign that an old servo hose is on its way out, even before it starts to collapse.

How do I fit it?
Cut it square, push it fully home over the spigot so it seats past any barb, and secure with a hose clip at each end. Route it away from the exhaust manifold and turbo, and support it so it cannot rub on a bracket or the bonnet slam panel. A vacuum leak from a chafed servo hose gives a lumpy idle as well as a poor pedal, so routing is worth taking care over.

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