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Brake Disc Cover Plates
By OE Match
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 914 (1970-1976)
Porsche 911 1969-89
Porsche 930 1975-77
Porsche 914-6 1970-76
Click 'Zoom in' for large parts diagram.
Diagram Ref No 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90135180117
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Fits:
Porsche 911 3.0L 1974-83
Porsche 911 3.2L 1984-89
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91135280120
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
This OE Match kit brings together all critical components involved in supporting and protecting the rear brake caliper and disc area. It includes the main structural mounting plates, protective disc cover plates, and the correct genuine Porsche bolts, washers, and nuts needed for proper installation.
Porsche 911 1974 - 1977 2.7L / 1976-77 3.0 Carrera
Porsche 911 1978 - 1983 3.0L / SC
Porsche 911 1984 - 1986 3.2L
Porsche 911 1987 - 1989 3.2L G50
Diagram ref no. 3, 4, 5, 6 and 15
This kit includes:
2 × OE Match Brake Support Mounting Plate - OE Ref: 91135208130
2 × OE Match Rear Brake Disc Cover Plate - OE Ref: 91135280120
4 × Genuine Porsche Hex Head Bolt (M8 × 16) - OE Ref: 90007508704
4 × Genuine Porsche Washer - OE Ref: N0122418
4 × Genuine Porsche Hexagon Nut - OE Ref: 9000760250C
Together, these components:
• Provide a rigid and correctly aligned mounting base for the rear brake calipers
• Protect brake discs and surrounding components from debris, dirt, and road contamination
• Ensure accurate caliper positioning relative to the brake disc
• Restore factory-correct hardware and fastening integrity
• Support consistent braking performance and even pad wear
This kit is ideal for brake overhauls, restorations, or when replacing corroded or damaged original mounting hardware.
Function:
• Brake support mounting plates: Anchor and align the rear brake calipers
• Disc cover plates: Shield brake discs and hubs from debris and moisture
• Genuine bolts, washers & nuts: Ensure proper torque, clamping force, and long-term fastening security
• System integrity: Maintains correct brake geometry and mechanical stability
Over time, rear brake mounting plates and disc covers are prone to corrosion, deformation, and fatigue, especially on classic vehicles. Worn or damaged hardware can lead to:
• Misaligned brake calipers
• Uneven brake pad wear
• Increased brake noise or vibration
• Reduced braking consistency
Replacing these components as a matched kit ensures the rear brake system is securely mounted, properly protected, and restored to original operating standards.
When to replace. Replace or install this kit when:
• Performing a rear brake overhaul or restoration
• Original mounting plates or disc covers are rusted or damaged
• Fasteners are corroded, stretched, or missing
• Brake alignment or caliper stability issues are present
• Refreshing suspension and brake hardware together
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91135208130
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 914 (1970-1976)
Porsche 911 1969-89
Porsche 930 1975-77
Porsche 914-6 1970-76
Diagram Ref No 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90135180117
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
Fits:
Porsche 911 3.0L 1974-83
Porsche 911 3.2L 1984-89
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91135280120
The product you are viewing cross references to these numbers
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
The brake mount plate provides a solid and secure base for the rear brake caliper and its associated components. It is designed to match the shape, mounting points, and strength of the original Porsche component, allowing for direct, hassle-free installation without the need for modification.
Sold each, Fits left and right.
Porsche 911 1974 - 1977 2.7L / 1976-77 3.0 Carrera
Porsche 911 1978 - 1983 3.0L / SC
Porsche 911 1984 - 1986 3.2L
Porsche 911 1987 - 1989 3.2L G50
Diagram ref no. 15
The mounting plate plays a key role in the brake system’s mechanical integrity, helping anchor the caliper in the proper position relative to the brake rotor and suspension components.
The brake support mounting plate serves several essential functions in the braking system:
• Provides a stable attachment point for the brake caliper
• Ensures proper alignment of caliper relative to the brake rotor
• Distributes braking forces evenly through the suspension and chassis
• Supports safety-critical brake function under hard stopping
Without a solid mounting plate, the caliper can shift or flex under load, leading to inconsistent braking performance, uneven pad wear, increased noise, and potentially compromised stopping power.
Function:
• Mounting interface: Secures the brake caliper to the suspension/axle housing
• Load distribution: Handles braking reaction forces to prevent flex and movement
• Alignment support: Keeps the caliper centered over the brake rotor
• Structural reinforcement: Provides rigidity necessary for consistent brake performance.
These support plates are precision-formed to withstand the dynamic loads generated by repeated braking and sudden stops - helping maintain consistent brake feel and vehicle safety.
The brake support mounting plate is a structural component that underpins the entire rear brake assembly’s performance. With age, original plates can:
• Corrode or rust, weakening structural integrity
• Bend or distort from impact or over-torque
• Wear at mounting holes, allowing play or misalignment
A compromised mounting plate can lead to brake vibration, uneven pad wear, inconsistent stopping, and noise. Replacing it with a quality OE Match unit restores proper alignment and rigidity - helping ensure repeatable, reliable brake performance and enhanced safety.
When to replace. Replace this brake support mounting plate when:
• There is visible corrosion or rust on the original plate
• The plate shows bends, dents, or distortions
• Brake calipers show uneven wear or misalignment
• You’re performing a rear brake overhaul or suspension service
• Mounting bolts no longer tighten to torque spec due to elongation or wear
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91135208130
The product you are viewing cross references to these numbers
OEMatch Brake Disc Cover Plates — Stopping Power, Consistent Control
Brake disc cover plates shield brake discs and calipers from road debris, water and dust while helping to manage heat and preserve long-term braking reliability on Porsche models. OEMatch Brake Disc Cover Plates components are compatible replacements engineered to original-spec dimensions and tolerances — a practical option when genuine or OEM parts are unavailable.
Understanding OEMatch Brake Disc Cover Plates
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original brake disc cover plates. OE (Original Equipment) refers to parts matching original specifications for the brake disc cover plates and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM brake disc cover plates engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models. Typical cover plates are formed from corrosion-resistant steel or aluminium and are shaped to clear caliper bodies, sensors and wheel movement. Correct profiling keeps clearance between rotating and fixed components and helps channel airflow to assist cooling under load.
Benefits Include
- Protects brake discs and calipers from road contaminants and moisture
- Helps manage heat for more consistent braking behaviour
- Reduces corrosion and contamination to support longer component life
Why Brake Disc Cover Plates Wear and Fail
- Corrosion from salt and moisture leading to material loss
- Physical damage from road debris or impact
- Heat-related warping or cracking under thermal cycling
- Bending or displacement caused by incorrect installation or impact
The Importance of Replacing with OEMatch Brake Disc Cover Plates
Replacing damaged or corroded cover plates restores essential protection to the braking system on Porsche models, preventing grit and moisture from accelerating wear of discs and calipers. Renewing these shields supports consistent brake feel, helps maintain cooling paths and reduces the risk of premature component deterioration.
Advantages
- Available in corrosion-resistant steel and aluminium finishes
- Model-specific shaping to match original clearances and mounting points
- Suitable for restoration projects and routine maintenance on Porsche vehicles
Available Types
- Stamped steel backing plates for corrosion resistance
- Pressed aluminium shields for reduced mass
- Model-specific restoration reproductions for classic Porsche applications
Support & Advice
These items affect safety-critical systems. Installation should be carried out by a qualified technician following model-specific procedures and torque settings. Use calibrated tools and new fasteners where specified.
