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Front view of round metal 3-pin piston wind-back adaptor with three pins, square drive recess and 'ASTA A-3PWB' marking.Angled top view of ASTA A-3PWB adaptor showing three pins, square drive recess and two round holes.Side-angle view of round metal adaptor showing thickness, three pins, square drive socket and ASTA A-3PWB marking.

3-Pin Piston Wind-Back Adaptor, 3/8" Drive, 3mm Pins

Specialized 3-pin adaptor for electric parking brake piston retraction on VAG, Renault, Volvo, and Seat vehicles.

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Description

3-Pin Piston Wind-Back Adaptor

Brief Overview

This 3-pin piston wind-back adaptor is engineered specifically for electric parking brake (EPB) caliper piston retraction on premium European vehicle platforms. Designed to fit VAG (Audi, VW, Seat), Renault, and Volvo models from 2005 onwards, it integrates seamlessly into your shop's brake service workflow. If you handle a broader range of brake applications, consider pairing this with a comprehensive caliper wind-back system to maximize your brake service capabilities.

Key Features

  • 3/8" Square Drive: Connects directly to standard ratchets and breaker bars for controlled piston retraction
  • Three Precision-Locating Pins: 3mm diameter pins ensure positive engagement with factory EPB caliper designs, preventing slip and potential caliper damage
  • Cast Alloy Construction: Robust 40mm diameter body engineered to withstand the mechanical stresses of brake service without deformation
  • Multi-Brand Coverage: Pre-engineered for over 20 vehicle models across Audi, Volkswagen, Renault, Volvo, Seat, and Iveco platforms
  • Threaded Mounting Points: Two auxiliary threaded holes provide optional fixture mounting or quick-change system integration

Why Resellers Choose This Adaptor

Workshop Efficiency: Electric parking brake systems require specialized tools—this adaptor eliminates the need for multiple wind-back solutions for EPB caliper service. A single tool covers the majority of premium European vehicle platforms your technicians encounter.

Profitability Anchor: EPB brake service commands higher labor rates than traditional hydraulic systems. This adaptor becomes an essential part of your EPB service offering, reducing customer wait times and enabling premium service positioning.

Risk Mitigation: Improper piston retraction can cause EPB system faults and customer returns. This precision-engineered tool ensures correct engagement, protecting your shop's reputation and reducing warranty claims.

Bulk Order Value: Shops with diverse European vehicle portfolios often require multiples for simultaneous brake jobs. Stock this as an essential brake service consumable.

Technical Specifications

Specification Value
Drive Type 3/8" Square Drive
Pin Diameter 3mm
Adaptor Diameter 40mm
Pin Configuration 3-pin radial
Material Cast Alloy
Mounting Holes 2 (threaded)
Primary Application Electric Parking Brake (EPB) Systems

Compatible Vehicle Applications

Audi: Q3 (2012–), A4 (2008–), S4 (2008–), S5 (2010–), A5 (2010–), Q5 (2008–), A6 (2005–), Allroad (2011–), A7 (2009–), A8 (2010–), S8 (2006–)

Renault: Megane (2005–), Grand Scenic (2005–)

Seat: Alhambra (2011–)

Volkswagen: Passat (2005–), Sharan (2011–), Tiguan (2008–), Touareg (2010–)

Volvo: S60 (2010–), S80 (2007–), V60 (2010–), V70 (2008–), XC60 (2010–), XC70 (2008–)

Iveco: Daily (2006–) – non-EPB applications

Business Advantage

For brake service specialists, this adaptor represents a high-margin, low-inventory-footprint SKU. Add it to every EPB brake package quote. Pair it with specialized piston pin tools to create a complete EPB service solution that commands premium pricing and faster customer turnaround.

Stock Recommendation: Essential for shops servicing Audi, VW, and Renault platforms. Consider bulk quantities if your customer base includes fleet maintenance or high-volume service centers.