.Overview
The Mastercool 43050 Air-Powered Brake Caliper Wind-Back Tool Kit is a professional-grade solution for retracting both front and rear caliper pistons during brake service. Designed for pneumatic operation, this tool enables a single technician to perform brake jobs quickly and efficiently—without the effort of manual compression tools. It’s ideal for vehicles with electronic parking brakes or challenging caliper access.

Key Features
The 43050 includes a 15-piece press adapter set to fit a wide range of caliper piston configurations. The tool supports both clockwise and counterclockwise rotation, allowing it to work with right- and left-hand threaded calipers. A magnetic base keeps adapters securely positioned, while the chrome alloy shaft and rubber protective sleeve help prevent caliper or component damage. The anodized aluminum body offers lightweight durability, and the O-ring–sealed shaft ensures consistent pneumatic pressure during operation.

Why Mastercool
Mastercool designs tools for professionals who expect performance, durability, and long-term reliability. With nearly 50 years of experience and U.S.-based support, our tools are trusted in shops and service bays worldwide. The 43050 is built to streamline brake service—safely, quickly, and effectively.

Technical Specifications
- Operation: Pneumatic, single piston press shaft
- Application: Front and rear caliper pistons
- Rotation: Right- and left-hand wind-back
- Adapter Compatibility: 15-piece press adapter set
- Drive Type: 3/8” air compressor adapter
- Body Material: Anodized aluminum
- Shaft Material: Chrome alloy steel with rubber guard
- Sealing: O-ring protected shaft
- Storage: Custom molded plastic carrying case
- Weight: Approx. 4 lbs
- Mastercool Part Number: 43050
- UPC: 700376430509
.?? AIR-POWERED BRAKE SERVICE TOOL – Uses pneumatic pressure to retract front and rear caliper pistons with a durable non-impact single piston shaft for efficient brake pad replacement
.?? 15-PIECE PRESS ADAPTER SET – Compatible with most domestic and import vehicles including GM, Honda, Audi, BMW, Mercedes-Benz, Toyota, and more
.?? LEFT OR RIGHT WIND-BACK OPERATION – Works with both clockwise and counterclockwise threaded brake calipers for broad vehicle coverage
.?? MAGNETIC BASE FOR STABILITY – Securely holds adapter heads during compression for safe and accurate alignment
.?? DURABLE CONSTRUCTION – Lightweight anodized aluminum body with chrome alloy center shaft and protective rubber guard to prevent caliper damage

Mastercool 43050 Air-Powered Brake Caliper Wind-Back Tool Kit – 15-Piece Adapter Set, Left/Right Hand Operation, 3/8” Drive, Magnetic Base