Centric 146.43038 Disc Brake Caliper Piston - Rear

Centric Rear Caliper Piston for Audi, Porsche, and More

Centric Premium Steel & Aluminum Caliper Pistons are built for rear disc brake caliper service where precise piston dimensions matter. Part number 146.43038 is a steel caliper piston with a 52.00 length, 37.30 inside diameter, 1.67583 in. piston OD, and 0.19578 in. thickness for accurate brake hydraulic fitment.

The Centric Premium Steel & Aluminum Caliper Pistons line focuses on replacement pistons for brake hydraulic repairs across a wide range of Audi, Acura, Honda, Jeep, Land Rover, and Porsche applications. This part number, 146.43038, is listed for rear-position use on many vehicles with specific rotor and caliper configurations.

Key Features

• Steel disc brake caliper piston for rear brake hydraulic service
• Part number 146.43038 for direct application lookup
• 52.00 length with 37.30 inside diameter
• 1.67583 in. piston OD / 42.97 mm piston OD
• 0.19578 in. thickness / 5.02 mm thickness
• Compatible with rear brake applications on select Audi A4, A6, A7, A8, S4, S5, S6, S7, RS5, RS7, Q5, and Porsche Macan models

Detailed Description

Use Centric 146.43038 when servicing a rear disc brake caliper piston that matches the listed dimensions and vehicle-specific brake setup. The steel construction supports caliper rebuild work where the piston must seal and move correctly inside the hydraulic bore. Fitment includes rear applications for 2018-2022 Honda Odyssey, 2017-2020 Acura MDX, 2014-2020 Jeep Cherokee, and numerous Audi and Porsche models, including rear brake service on Audi A4, A6 Quattro, A7 Quattro, S4, S5, S6, S7, RS5, RS7, Q5, Q5 Sportback, A8 Quattro, and Porsche Macan.

This part cross-references OE-style brake piston applications for the same vehicle-specific rear caliper service. Verify rotor size, caliper type, and model notes before ordering, especially on Audi and Porsche platforms with Brembo, TRW, Girling, or ceramic/iron disc variations.

What It Helps Fix

• Rear brake caliper piston wear or corrosion
• Brake fluid leakage past a damaged piston seal surface
• Uneven rear braking caused by sticking caliper movement
• Poor pedal response from a compromised hydraulic caliper assembly
• Brake rebuild needs on vehicles with listed rear disc brake configurations

Installation Notes and Tips

Confirm the piston dimensions, inside diameter, and thickness against the original caliper before installation. Match the vehicle year, make, model, rear position, and brake notes exactly, since several Audi and Porsche applications depend on rotor diameter, caliper brand, or disc material. Clean the caliper bore thoroughly and inspect seals, boots, and related hydraulic components during service.

Quality Assurance

Centric brake components are cataloged for application-specific replacement use, and this piston is identified by exact dimensional data for fitment verification. Part number 146.43038 is intended for precise rear caliper piston replacement on the listed vehicles.