Mastercool 43051 Air-Powered Brake Caliper Wind-Back Tool – TOOL ONLY, No Adapters – Pneumatic Piston Compressor with Left/Right Rotation and 3/8” Drive

Overview The Mastercool 43051 is a standalone, air-powered brake caliper wind-back tool engineered for use with existing adapter heads. Designed for pneumatic operation, this tool allows technicians to retract front and rear caliper pistons easily and efficiently. This model is ideal for shops and users who already own the full adapter set (included with model 43050) and only need the replacement tool. Key Features With support for both right- and left-hand threaded pistons, the 43051 offers full compatibility with most front and rear caliper systems. The 3/8” drive connects directly to standard air compressor lines, while the chrome-alloy shaft and O-ring seal ensure durability and smooth performance. The lightweight anodized aluminum housing adds strength without extra bulk—making this tool reliable and easy to use. IMPORTANT NOTE This product is the tool only and does not include adapter heads or a storage case. For the complete kit, see Mastercool model 43050. Why Mastercool Mastercool has been designing professional-grade tools for nearly five decades. The 43051 reflects that commitment to performance and reliability—backed by responsive, U.S.-based support and industry-proven durability. Technical Specifications - Model: 43051 (Tool Only) - Operation: Pneumatic, single piston press shaft - Application: Front and rear brake caliper pistons - Rotation: Left- and right-hand wind-back - Drive: 3/8” air compressor adapter - Body Material: Anodized aluminum - Shaft Sealing: O-ring protected - Weight: Approx. 2.5 lbs - Adapter Set: Not included - Carry Case: Not included - UPC: [Please confirm]

• ✔️ TOOL ONLY – ADAPTERS NOT INCLUDED – Designed for professionals who already have compatible adapter heads or want a standalone replacement tool
• ✔️ ENERGY-SAVING PNEUMATIC DESIGN – Uses compressed air to retract front and rear caliper pistons quickly and easily
• ✔️ BIDIRECTIONAL OPERATION – Supports both clockwise and counterclockwise piston retraction for maximum vehicle compatibility
• ✔️ DURABLE NON-IMPACT SHAFT – Single piston press shaft reduces technician fatigue while maintaining smooth, controlled operation
• ✔️ LIGHTWEIGHT ALUMINUM BODY – Built with anodized aluminum for a strong, corrosion-resistant design