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Brake Disc Cover Plates
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- 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 911 1978-1989 3.3L Turbo (930)
- 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Related, superseded, cross reference or alternative numbers for comparison.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 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 928GT 5.0L 1989-91
- Porsche 914 (1970-1976)
Fits:
Porsche 911 1969-73 REAR
Porsche 914-6 1970-76 REAR
Diagram Ref No 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91435208500
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
Fits:

Porsche 911 (2.0) 1963-68
Porsche 912 (1.6) 1965-68
Diagram ref no 9
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90135180
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
Fits:

Porsche 911 (2.0L) 1963-68
Diagram ref no 5 and 6.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90135280
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Fits rear left or right side . Price is each

Fits:
Porsche 911 1969-73 (REAR)
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90135208114
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
Sold each

Fits:
Porsche 911 1969-73 (REAR)
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90135208114
The product you are viewing cross references to these numbers
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)

Porsche 911 1978-89 Turbo
Porsche 911 1978-89 Turbo Look
Click 'Zoom in' for large parts diagram.
Diagram ref no 29
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
93035208103
The product you are viewing cross references to these numbers
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1978-1989 3.3L Turbo (930)

Porsche 911 1978-89 Turbo
Porsche 911 1978-89 Turbo Look
Diagram ref no 29
Related reference numbers
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93035208103
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
This is a Genuine Porsche rear brake support mounting plate manufactured to original factory specifications for Porsche 911 models from 1974 to 1989. This OEM component provides the correct structural mounting point for the rear brake caliper, ensuring precise alignment with the brake disc and stable operation under braking loads.

Porsche 911 1974 - 1989
Diagram ref no. 15
The brake support mounting plate anchors the rear brake caliper in the correct position and resists the forces generated during braking. Its structural integrity is essential for consistent braking response, even pad wear, and stable caliper operation, particularly under repeated or heavy braking.
Over time, original brake support plates can suffer from corrosion, fatigue, or deformation due to heat, moisture, and mechanical stress. Any loss of rigidity or alignment can affect braking consistency and safety. Replacing a worn or damaged plate with a Genuine Porsche component restores factory-level fitment, strength, and confidence in the braking system - especially important for classic and restored vehicles.
When to replace. Replace the brake support mounting plate when:
• The original plate shows rust, cracking, or deformation
• Rear brake calipers no longer sit squarely over the disc
• Mounting holes are worn or elongated
• You are performing a full rear brake or suspension restoration
• Maintaining OEM originality is a priority
Related reference numbers
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91135208130
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
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
Sold individually - 4 needed per car
Fits:
Porsche 911 - 1965 to 1968 (Short wheel base)
Porsche 912 - 1965 to 1968 (Short wheel base)
Locking plate is laser cut and zinc plated
Click 'Zoom in' for large parts diagram.
Diagram ref no 7
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90135148111
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disc brake rear axle 911 SC 1978-83 603-00
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disc brake rear axle 911 TURBO 1978-83 603-05
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brake rear axle 911 CARRERA 1987-89 603-00
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brake rear axle 911 TURBO / CARRERA M491 1987-89 603-05
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Disc brake rear axle 911 CARRERA 1984-86 603-00
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disc brake rear axle 911 TURBO / CARRERA M491 1984-86 603-05
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Disc Brake Rear, Handbrake 911 1974-77 603-00
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Disc brake rear 911 1970-73 603-00
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disc brake front 911 UPTO 1968 602-00
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Disc brake rear 911 UPTO 1968 603-00
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disc brake rear 911 1969 603-05
Porsche Brake Disc Cover Plates | Design911 High-Quality Replacement Parts for Protection, Cooling & Longevity
Brake disc cover plates, also known as backing plates or dust shields, are essential components that protect your Porsche’s brake discs and calipers from dirt, debris, and excess heat. Positioned behind the brake disc, they help maintain consistent braking performance by shielding the braking system from contaminants and improving cooling airflow. Whether used for restoration or maintenance, replacing worn cover plates helps preserve braking efficiency and prolong component lifespan.
At Design911, we offer a complete range of brake disc cover plates, precision-engineered for perfect fitment and durability. Manufactured from corrosion-resistant materials and designed to handle high thermal loads, our cover plates ensure long-term reliability and protection under both road and performance driving conditions. Ideal for service, restoration, or upgrade projects, these components maintain your Porsche’s stopping power and integrity.
What Do Brake Disc Cover Plates Do?
Brake disc cover plates perform a crucial protective and thermal management role within your Porsche’s braking system.
Core Functions:
• Shield brake discs and calipers from road debris, water, and dust.
• Assist with heat dissipation during braking.
• Reduce corrosion by preventing contaminant buildup.
• Maintain consistent braking efficiency and performance.
• Contribute to proper airflow for cooling under braking load.
With effective cover plates, your Porsche’s braking components stay cleaner, cooler, and more reliable for longer periods.
Why Do Brake Disc Cover Plates Fail or Degrade?
Due to their position near the road surface and braking components, cover plates are constantly exposed to moisture, dirt, and extreme temperature changes.
Common Causes of Failure Include:
• Corrosion or rust caused by road salt and moisture.
• Physical damage from road debris or gravel.
• Cracking or warping from heat and vibration.
• Bending due to improper installation or impact.
• General wear over time from environmental exposure.
When cover plates deteriorate, they lose their protective function — allowing dirt and moisture to affect the braking system, which can lead to premature wear or reduced performance.
Why Replace or Upgrade Your Porsche Brake Disc Cover Plates?
Replacing damaged or corroded cover plates restores essential protection to your braking system and maintains performance consistency. Design911’s high-quality replacements are designed for longevity, heat resistance, and accurate fitment across Porsche models.
Key Benefits:
• Restores full protection for brake discs and calipers.
• Improves cooling efficiency and braking stability.
• Prevents corrosion and contamination of key components.
• Manufactured from durable, corrosion-resistant materials.
• Direct-fit design for straightforward installation.
• Suitable for classic and modern Porsche vehicles.
Design911’s Porsche brake disc cover plates deliver reliability, precision, and long-lasting performance — the perfect solution for maintaining your Porsche’s braking excellence.
Highlights
• Premium Porsche brake disc cover plates and dust shields.
• Engineered from high-strength, corrosion-resistant steel or aluminium.
• Protects braking components from debris and moisture.
• Assists with cooling airflow for optimal performance.
• Ideal for restoration, maintenance, or performance upgrades.
• Fits a wide range of Porsche models for perfect compatibility.