Audi A5 Master Cylinder for Sale | Used Precision Aluminum Brake Master
$110.00
At a Glance
- Condition: OEM used precision aluminum brake master cylinder, hydraulic seal condition assessed, port fittings verified, mounting features inspected
- Availability: In stock across Audi A5 model years
- Shipping: Free shipping to all 50 states, 3 to 7 business days
- Application: Audi A5 – Audi’s premium sport coupe / sportback (coupe variant of the A4 platform)
- Precision aluminum construction: standard brake master cylinder material with precision-machined bore and appropriate structural integrity for hydraulic brake system applications
- A4 platform basis: The Audi A5 is essentially the coupe / sportback variant of the Audi A4 platform – shared platform architecture with the A4 across multiple platform generations
- B8 / B8.5 / B9 platform generations: A5 spans multiple Audi platform generations – verify chassis code (B8, B8.5, or B9) and configuration when ordering
- Related Audi listings: See our Audi A6 tie rod, A7 screen, A8 power steering pump, AllRoad headlight, and A4 AllRoad tail light listings for related Audi heritage
- 15 day replacement warranty on component defects
Description
About the Audi A5 Master Cylinder
Need a replacement Audi A5 brake master cylinder (precision aluminum)? Part Nests sources OEM used precision aluminum brake master cylinders for Audi A5 applications. The Audi A5 is Audi’s premium sport coupe / sportback – the coupe / sportback variant of the Audi A4 platform. Shares platform architecture with the A4 across multiple platform generations (B8, B8.5, B9). Precision aluminum construction with precision-machined bore for hydraulic brake system integration. Each master cylinder is inspected for hydraulic seal condition, port fittings, and mounting features. Related to the broader Audi lineup across our catalog – see our related A6, A7, A8, and AllRoad listings. Call (855) 634-4447 to verify A5 year, chassis code (B8, B8.5, or B9), and configuration before ordering.
What Is Included and Not Included
| Detail | Description |
|---|---|
| INCLUDED | The master cylinder unit as photographed. |
| NOT INCLUDED | Fluid reservoir where separate, brake fluid, booster, and lines. |
| Tools You Need | Flare-nut wrenches, fresh DOT 4 fluid, and a full system bleed after installation. |
Audi A5 Vehicle Context
- Audi’s premium sport coupe / sportback: The Audi A5 is Audi’s premium sport coupe / sportback positioned as the coupe / sportback variant of the Audi A4 platform. Introduced for the 2008 model year (B8 platform) providing coupe variant of Audi’s compact executive sedan platform. Various body variants including Coupe, Sportback (5-door hatchback with coupe styling), and Cabriolet (convertible)
- A5 platform generations: Audi A5 spans multiple Audi platform generations. B8 platform (2008-2012 first-generation A5). B8.5 platform (2013-2016 mid-cycle facelift). B9 platform (2017+ second-generation A5). Different platform generations use different chassis engineering with various component-level variations – verify chassis code when ordering
- A4 platform basis: The A5 shares platform architecture with the Audi A4 (mid-size executive sedan) across the various platform generations. B8 A5 shares platform with B8 A4; B8.5 with B8.5 A4; B9 with B9 A4. Various component-level compatibility between A5 and A4 applications on same platform generation – many chassis-level components may cross-reference by part number verification
- A5 positioning: Positioned as a premium sport coupe / sportback in the compact executive coupe segment. Competes with the BMW 4 Series, Mercedes C-Class Coupe, and various other premium compact executive coupe competitors. Distinctive Audi design language, quattro all-wheel drive availability, and Audi premium interior appointments differentiate the A5 in the premium sport coupe segment
- Related Audi sport coupes / higher-performance variants: The A5 lineup includes various higher-performance variants including the S5 (higher-performance variant) and RS5 (Audi Sport highest-performance variant). Different specific variants across the A5 family with various engine and performance configuration variations. Related to broader Audi Sport (RS) performance vehicle lineage
Audi Lineup Context
- Audi A5 Master Cylinder: This application – premium sport coupe (see this listing)
- Audi A6 Tie Rod: Executive mid-size sedan – see our Audi A6 tie rod listing
- Audi A7 Screen: Executive 4-door coupe / sportback – see our Audi A7 screen listing
- Audi A8 Power Steering Pump: Flagship full-size executive sedan – see our Audi A8 power steering pump listing
- Audi AllRoad Headlight: Adventure-oriented wagon variant – see our Audi AllRoad headlight listing
- Audi A4 AllRoad Tail Light: A4-based AllRoad B8.5 – see our Audi A4 AllRoad tail light listing
Brake Master Cylinder Specifications
- Type: OEM used precision aluminum brake master cylinder for Audi A5
- Function: Brake master cylinder is the primary hydraulic actuator in the vehicle brake system. Converts driver brake pedal input force into hydraulic brake fluid pressure that is transmitted through the brake lines to the brake calipers (or drums) at each wheel providing brake force. Critical safety component – master cylinder failure results in brake system failure
- Construction: Precision aluminum master cylinder housing with precision-machined bore for hydraulic pistons, internal seal assemblies, brake fluid port fittings for brake line connection, brake fluid reservoir mounting features, and mounting bracket for brake booster / firewall integration. Precision aluminum provides appropriate combination of structural integrity, thermal management, and weight optimization for automotive brake master cylinder applications
- Common failure modes: Internal hydraulic seal failure (causes brake fluid loss or brake pedal sinking), bore corrosion (from moisture contamination in brake fluid), external brake fluid leak at port fittings, reservoir mounting issues. Symptoms include brake pedal sinking (soft or falling brake pedal), brake fluid loss, brake system pressure loss, and various brake system integration issues
- Testing: Hydraulic seal condition assessed, port fittings verified, mounting features inspected before shipment. Note – full brake system operation testing requires vehicle installation and brake system bleeding
- Brake system safety: Master cylinder is a critical safety component. Plan appropriate brake system bleeding, brake fluid replacement, and complete brake system operation verification after installation. Consult qualified brake service technician if uncertain about brake system service
Vehicle Compatibility
| Detail | Description |
|---|---|
| Audi A5, first generation 8T (donor 2007; US sales from the 2008 model year) | Year and VIN confirmed at order |
| Later A5 generations | Different part; call to check inventory |
| Reference Application | 2007 Audi A5 |
Why Buy From Part Nests
- OEM verified precision aluminum brake master cylinder for Audi A5
- Hydraulic seal condition assessed, port fittings verified, mounting features inspected
- Support for multiple Audi A5 platform generations (B8, B8.5, B9)
- Free shipping to all 50 states
- 15 day replacement warranty on component defects
- Support team familiar with Audi A5 / A4 platform sharing and chassis code verification (B8 / B8.5 / B9)
- Call (855) 634-4447 to confirm your A5 year, chassis code, and configuration before ordering.
15 Day Replacement Warranty
Every used Audi A5 Master Cylinder carries a 15 day replacement warranty starting on the delivery date. Platform generation (B8, B8.5, or B9) verification is critical before ordering. Master cylinder is a critical safety component - qualified installation and system verification required. Call (855) 634-4447 to start a warranty claim within 15 days of delivery.
What Is Covered
- Component defects present on arrival beyond what was disclosed
- Hydraulic seal or bore failures within 15 days from installation
- Port fitting failures not disclosed at sale
- Incorrect part shipped due to an error on our end
What Is Not Covered
- Damage caused during installation
- Cross-generation installation without chassis code verification
- Brake system bleeding, brake fluid, or other brake system service costs
- Labor expenses of any kind, including brake system service labor
- Part: OEM used precision aluminum brake master cylinder
- Application: Audi A5 (B8, B8.5, B9 platform generations)
- Platform Basis: Audi A4 platform (A5 is coupe / sportback variant)
- Body Variants: Coupe, Sportback (5-door), Cabriolet (convertible)
- Segment: Premium sport coupe / sportback (compact executive)
- Higher-Performance Variants: S5, RS5 (Audi Sport)
- Competitors: BMW 4 Series, Mercedes C-Class Coupe
- Related Audi: A6, A7, A8, AllRoad, A4 AllRoad (all in our catalog)
Additional information
| Brand | Audi |
|---|---|
| Construction Material | Precision-machined aluminum with reinforced polymer seals |
| Hydraulic Fluid Specification | DOT 4 brake fluid recommended |
| Operating Pressure Range | Meets Audi factory hydraulic parameters |
| Unit Weight | Approximately 1.5 kilograms |
| Application | 2007 Audi A5 |
| SKU | vaz671 |
| Price | $110.00 |
An OEM used precision aluminum brake master cylinder for Audi A5 applications. Precision aluminum master cylinder housing with precision-machined bore for hydraulic pistons, internal seal assemblies, brake fluid port fittings for brake line connection, brake fluid reservoir mounting features, and mounting bracket for brake booster / firewall integration. Function is converting driver brake pedal input force into hydraulic brake fluid pressure transmitted through brake lines to brake calipers.
Audi's premium sport coupe / sportback positioned as the coupe / sportback variant of the Audi A4 platform. Introduced for the 2008 model year (B8 platform) providing coupe variant of Audi's compact executive sedan platform. Various body variants including Coupe, Sportback (5-door hatchback with coupe styling), and Cabriolet (convertible). Competes with the BMW 4 Series, Mercedes C-Class Coupe, and various other premium compact executive coupe competitors.
The A5 shares platform architecture with the Audi A4 (mid-size executive sedan) across the various platform generations. B8 A5 shares platform with B8 A4; B8.5 with B8.5 A4; B9 with B9 A4. Various component-level compatibility between A5 and A4 applications on same platform generation - many chassis-level components may cross-reference by part number verification. Common Audi platform sharing approach.
Audi A5 spans multiple Audi platform generations. B8 platform (2008-2012 first-generation A5). B8.5 platform (2013-2016 mid-cycle facelift). B9 platform (2017+ second-generation A5). Different platform generations use different chassis engineering with various component-level variations - verify chassis code when ordering. Different platform generations may use different master cylinder configurations.
The A5 lineup includes various higher-performance variants including the S5 (higher-performance variant) and RS5 (Audi Sport highest-performance variant). Different specific variants across the A5 family with various engine and performance configuration variations. Related to broader Audi Sport (RS) performance vehicle lineage. Different variants may share or use different specific chassis components - verify variant when ordering.
Competes with the BMW 4 Series, Mercedes C-Class Coupe, and various other premium compact executive coupe competitors. Distinctive Audi design language, quattro all-wheel drive availability, and Audi premium interior appointments differentiate the A5 in the premium sport coupe segment. Popular Audi model appealing to buyers seeking Audi brand positioning in the premium sport coupe / sportback segment.
Yes. Master cylinder replacement requires complete brake system bleeding and brake fluid replacement to remove air from the system and ensure proper hydraulic brake system operation. Master cylinder is a critical safety component - plan appropriate brake system bleeding, brake fluid replacement, and complete brake system operation verification after installation. Consult qualified brake service technician if uncertain about brake system service.
Internal hydraulic seal failure (causes brake fluid loss or brake pedal sinking). Bore corrosion (from moisture contamination in brake fluid). External brake fluid leak at port fittings. Reservoir mounting issues. Symptoms include brake pedal sinking (soft or falling brake pedal), brake fluid loss, brake system pressure loss, and various brake system integration issues. Master cylinder failure is a critical brake system safety concern.
Related products
Reviews
There are no reviews yet.