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Brake Disc Cover Plates

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DISPLAYING 1 to 12 (of 12 products)
90135180117/1KIT
Product Information
Product Information
Brake disc cover plates Set of 2 FRONT.

oematch

front
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Related, superseded, cross reference or alternative numbers for comparison.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
90135180117
901.351.801.17
901 351 801 17
91435180100
914.351.801.00
914 351 801 00

The product you are viewing cross references to these numbers
91135280120/1KIT
Product Information
Product Information
Brake disc cover plates Set of 2 REAR. 

oematch

Fits:
rear
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Related, superseded, cross reference or alternative numbers for comparison.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
91135280120
911.352.801.20
911 352 801 20

The product you are viewing cross references to these numbers
91135208130/1KIT
Product Information
Product Information
Brake support mounting & plates kit. Rear axle.
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.

rear
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
91135208130
91135280120

The product you are viewing cross references to these numbers
Special Order item
N0102353
Product Information
Product Information
Brake disc cover plate Bolt. M 8 x 10.
Fits front and rear.

porsche

fr
Porsche 911/912 1965-69
Porsche 911 1970-89
Porsche 930 1975-89
Porsche 914 1970-76

Diagram Ref No 6
Special Order item
90135180117
Product Information
Product Information
Brake disc cover plate. FRONT

porsche

front
Porsche 911 1969-89
Porsche 930 1975-77
Porsche 914 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
90135180117
1664200200

The product you are viewing cross references to these numbers
90135180117/1
Product Information
Product Information
Brake disc cover plate. FRONT

front
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
90135180117
901.351.801.17
901 351 801 17
91435180100
914.351.801.00
914 351 801 00

The product you are viewing cross references to these numbers
Special Order item
91135280120
Product Information
Product Information
Brake disc cover plate. REAR

porsche

rear
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
91135280120
1664300200

The product you are viewing cross references to these numbers
91135280120/1
Product Information
Product Information
Brake disc cover plate. REAR.

Fits:
rear
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
91135280120

The product you are viewing cross references to these numbers
Special Order item
93035208103
Product Information
Product Information
Brake disc mounting plate, REAR. Turbo or M491 Turbo Look Cars 

rear
Porsche 911 1978-89 Turbo
Porsche 911 1978-89 Turbo Look

Click 'Zoom in' for large parts diagram.
Diagram ref no 29

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Related, superseded, cross reference or alternative numbers for comparison.

93035208103
93035208103

The product you are viewing cross references to these numbers
93035208103/1
Product Information
Product Information
Brake disc mounting plate, REAR. Turbo or M491 Turbo Look Cars 

rear
Porsche 911 1978-89 Turbo
Porsche 911 1978-89 Turbo Look


Diagram ref no 29



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

93035208103
93035208103

The product you are viewing cross references to these numbers
Special Order item
91135208130
Product Information
Product Information
Brake support mounting plate. Rear axle
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.

rear
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
Related, superseded, cross reference or alternative numbers for comparison.

91135208130
91135208130

The product you are viewing cross references to these numbers
91135208130/1
Product Information
Product Information
Brake mounting plate. Rear axle.
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.

rear
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
91135208130

The product you are viewing cross references to these numbers
DISPLAYING 1 to 12 (of 12 products)
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About Brake Disc Cover Plates

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.

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