Caliper brake hose, SET OF 4. Porsche 986 Boxster / 996 / 997 › 99635513904KIT

Brake Hose 

Maintain the safety and braking performance of your Porsche with this OE Match Brake Hose. Manufactured to original equipment specifications, this premium flexible hydraulic brake hose is designed to  providing reliable hydraulic pressure transfer between the rigid brake lines and the brake calipers.

Porsche Boxster 986 2.5L 1997-99
Porsche Boxster 986 2.7L 1999-02
Porsche Boxster S 986 3.2L 1999-02
Porsche Boxster 986 2.7L 2003-04
Porsche Boxster S 986 3.2L 2003-04
Porsche 996 C2 3.4L 1997-08/01
Porsche 996 C4 3.4L 1997-08/01
Porsche 996 C2 3.6L 09/01-2005
Porsche 996 C4 3.6L 09/01-2005
Porsche 996 C4S 3.6L 09/01-2005
Porsche 996 TURBO 2000-05
Porsche 996 GT2 2001-05
Porsche 996 GT3 MKI 1999-02
Porsche 996 GT3 MKII 2003>>
Porsche 996 GT3 RS 2003-04
Porsche 997 MK1 Carrera 2 3.6L 2005-08
Porsche 997 MK1 Carrera 2S 3.8L 2005-08
Porsche 997 MK1 Carrera 4 3.6L 2005-08
Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Porsche 997 MK1 TURBO 2007-09
Porsche 997 MK1 GT2 2007-09
Porsche 997 MKII Carrera C2 3.6L 2009-12
Porsche 997 MKII Carrera C4 3.6L 2009-12
Porsche 997 MKII Carrera C2S 3.8L 2009-12
Porsche 997 MKII Carrera C4S 3.8L 2009-12
Porsche 997 MKII Turbo 2010-13

 
Porsche Boxster 987 2.7L 2005-08/08
Porsche Boxster 987 S 3.2/3.4L 2005-08/08
Porsche Boxster 987 MKII 2.9L 2009-12
Porsche Boxster S 987 MKII 3.4L 2009-12
Porsche Cayman 2.7L 987C 2006-08
Porsche Cayman S 3.4L 987C 2005-08
Porsche Cayman 2.9L 987C MKII 2009-12
Porsche Cayman S / R 3.4L 987C MKII 2009-12

Diagram ref no 4

Engineered using high-quality reinforced materials, this OE Match brake hose is built to withstand the high hydraulic pressures and demanding operating conditions experienced during everyday driving and spirited road use. It delivers dependable braking performance while maintaining the precise pedal feel expected from a Porsche braking system.

What Does the Brake Hose Do?

The brake hose is a vital component of the hydraulic braking system. It connects the fixed metal brake pipes to the moving brake calipers, allowing suspension and steering movement while maintaining constant hydraulic pressure.

Its primary functions include:

• Transferring brake fluid under high pressure.
• Allowing suspension and steering movement.
• Maintaining consistent brake pedal feel.
• Supporting Porsche ABS and PSM systems.
• Delivering reliable hydraulic braking performance.
• Providing safe, leak-free operation under all driving conditions.

Without a correctly functioning brake hose, hydraulic pressure cannot be delivered safely to the brake caliper, reducing braking efficiency and vehicle safety.

Why Do Brake Hoses Fail?

Brake hoses are exposed to constant movement, heat and environmental conditions. Over time they naturally deteriorate. Common causes include:

• Age-related rubber degradation.
• Internal hose deterioration.
• Heat from the braking system.
• Exposure to moisture, road salt and contaminants.
• Surface cracking.
• Abrasion against suspension components.
• Internal swelling restricting brake fluid flow.
• Corrosion around hose fittings.

As brake hoses age, they can become less flexible, reducing braking performance and increasing the risk of hydraulic failure.

When Should the Brake Hose Be Replaced?

Replacement is recommended whenever:

• Visible cracks appear in the hose.
• The hose shows signs of swelling or bulging.
• Brake fluid leaks develop.
• The hose becomes damaged through abrasion.
• The braking system is undergoing major refurbishment.
• Brake calipers are being replaced.
• During preventative maintenance on older vehicles.
• Whenever deterioration is identified during servicing.

Many Porsche specialists recommend replacing ageing brake hoses in axle pairs to maintain balanced braking performance and consistent hydraulic response.