Brake Hoses & Lines
- 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 Boxster 987 2.7L 2005 -08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16

Fits:
Porsche 981 Boxster 2012-16
Porsche 981C Cayman 2014-16
Click ' Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98135557502
The product you are viewing cross references to these numbers
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16

Fits:
Porsche 986 Boxster - 1997 to 2004
Porsche 987.1 Boxster - 2005 to 2008
Porsche 987.1 Cayman - 2005 to 2008
Porsche 996 - 1997 to 2005
Porsche 997.1 - 2005 to 2008
Diagram ref no 17
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99635554300
The product you are viewing cross references to these numbers
- 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 Boxster 987 2.7L 2005 -08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- 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 GT3 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Porsche Brake Hoses & Lines | Reliable Hydraulic Pressure & Safe Stopping Power
Brake hoses and lines are the lifelines of your Porsche’s braking system, transferring hydraulic fluid between the master cylinder, calipers, and wheel cylinders. These precision-engineered components ensure consistent brake pressure, responsive pedal feel, and dependable stopping performance under all driving conditions.
At Design911, we offer high-quality brake hoses and lines designed to meet or exceed original performance standards. Manufactured from reinforced rubber, stainless steel braided, or corrosion-resistant steel tubing, our brake hoses deliver exceptional durability, pressure integrity, and fade-free braking control.
Whether you’re restoring a classic Porsche or upgrading for track use, our brake hoses and lines ensure your braking system performs with accuracy, consistency, and safety.
What Do Brake Hoses & Lines Do?
Brake hoses and lines form the hydraulic network that transmits brake fluid pressure when the pedal is pressed, converting driver input into controlled braking force.
Core Functions:
- Carry brake fluid from the master cylinder to each caliper or wheel cylinder.
- Maintain hydraulic pressure for responsive braking.
- Allow flexibility between moving components such as suspension and wheels.
- Withstand extreme temperatures, vibration, and pressure.
- Ensure consistent braking performance across all four wheels.
Without properly functioning hoses and lines, hydraulic pressure can be lost — leading to soft pedal feel, poor braking response, or total brake failure.
Why Do Brake Hoses & Lines Fail or Wear Out?
Over time, brake hoses and lines are exposed to heat, pressure, moisture, and environmental elements, which can cause deterioration and leaks.
Common Causes of Failure Include:
- Cracking, swelling, or hardening of rubber hoses.
- Corrosion of metal brake lines from road salt or moisture.
- Internal collapse restricting fluid flow.
- Loose fittings or connection leaks.
- Aging seals leading to small but dangerous fluid seepage.
When brake hoses begin to fail, symptoms include a spongy brake pedal, visible leaks, or uneven braking response.
Why Replace or Upgrade Your Porsche Brake Hoses & Lines?
Replacing worn or corroded brake hoses and lines restores hydraulic integrity, ensures safe braking performance, and improves pedal precision.
Key Benefits:
- Restores full braking power and pedal responsiveness.
- Prevents fluid leaks and pressure loss.
- Improves reliability under high-performance braking.
- Reduces stopping distances and enhances safety.
- Compatible with Porsche 911, Cayman, Boxster, Panamera, Macan, Cayenne, and classic models.
- Available in both standard rubber and high-performance braided designs.
Regular inspection and replacement of brake hoses are essential for maintaining braking efficiency and driver safety.
Highlights
- Precision-engineered Porsche brake hoses and hydraulic lines.
- Designed for exact fitment and long-term durability.
- High-pressure rated and corrosion-resistant materials.
- Available in performance braided stainless steel options.
- Direct-fit replacements for all Porsche models.
- Essential for safe braking performance and system reliability.