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Brake support mounting & plates kit. REAR. Porsche 911 1978-89 ❭ BRAKEPLATEKIT.911.R
- 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)
This OE Match rear brake support mounting and plate kit is designed for Porsche 911 models from 1978 to 1989. The kit includes the essential backing plates and mounting components required to properly secure and support the rear brake assemblies.

Porsche 911 1978-89 Turbo
Porsche 911 1978-89 Turbo Look (M491)
Diagram ref no 3, 4, 5 and 29
Kit Includes
2 × OE Match Brake Support Plates – 93035208103
2 × OE Match Brake Mounting Plates – 93035280104
8 × Genuine Porsche Screws – 90006705703
8 × OE Match Hexagon Nuts – N0122418
The brake support mounting plates (also known as backing plates or protection plates) are fitted behind the rear brake discs and calipers. They serve as structural and protective components of the rear braking system, providing a mounting surface for brake hardware while shielding the braking components from road debris, dust and moisture.
This OE Match kit includes both plates required for the rear axle along with the correct mounting hardware to complete the installation.
The brake support plates help secure the rear brake assembly while also protecting sensitive components such as the brake disc, caliper and parking brake mechanism. By acting as a structural mounting point and protective shield, they help maintain the integrity and performance of the rear braking system.
Replacing worn or corroded plates ensures that the brake components remain properly aligned and protected from external contaminants.
Function
• Brake Assembly Support: Provides mounting structure for rear brake components
• Protection: Shields brake discs and calipers from dirt, water and debris
• Alignment Stability: Helps maintain correct positioning of the rear brake assembly
• Durability: OE-style steel construction designed to withstand heat and road exposure
Over time, brake backing plates can corrode, bend or weaken due to exposure to road salt, moisture and heat generated by the braking system. Damaged plates may compromise brake component alignment or reduce protection against debris. Replacing them with an OE Match set restores the correct structure of the rear braking assembly and helps maintain safe and reliable braking performance.
Consider replacing the brake support plates if you notice:
• Visible corrosion or rust damage
• Bent or damaged backing plates
• Loose or worn mounting hardware
• During a rear brake overhaul or restoration
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
BRAKEPLATEKIT.911.R
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 9YA Cayenne V6 3.0L Petrol (340Hp) 2018-23
- Porsche 9YA Cayenne Coupe V6 3.0L Petrol (340Hp) 2019-23
- Porsche 9YA Cayenne E-Hybrid V6 3.0L V6 (340Hp) 2018-23
- Porsche 9YA Cayenne Coupe E-Hybrid V6 3.0L (340Hp) 2020-23
- Porsche 9YA Cayenne S V6 2.9L Petrol (440Hp) 2018-23
- Porsche 9YA Cayenne Coupe S V6 2.9L Petrol (440Hp) 2019-23
- Porsche 9YA Cayenne Turbo V8 4.0L Petrol (550Hp) 2020-23
- Porsche 9YA Cayenne Coupe Turbo V8 4.0L Petrol (550Hp) 2019-23
- Porsche 9YA Cayenne Turbo S E-Hybrid V8 4.0L (550Hp) 2019-23
- Porsche 9YA Cayenne Coupe Turbo S E-Hybrid V8 4.0L (550Hp) 2020-23

Fits:
Porsche 9YA Cayenne 2018-21
1ZI - front disc brake, brake caliper painted WHITE (PSCB), disc diameter 20"
1ZU - front disc brake, brake caliper painted GREEN (PSCB), disc diameter 20"
Porsche 9YA Cayenne 2018-21
1ZV - front disc brake, brake caliper painted YELLOW (PCCB), disc diameter 21"
1ZW - front disc brake, brake caliper painted GREEN (PCCB), disc diameter 21"
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PAB61531
The product you are viewing cross references to these numbers
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