Alternator Freewheel Pulley Socket M10 x 110mm, 33-Tooth, 1/2-Inch Drive

Brief Overview

This is a purpose-built socket tool designed specifically for removing and installing Bosch-type alternator freewheel pulleys with integrated clutches. The extended 110mm shaft and dual-function design allow simultaneous loosening of the central M10 bolt while controlling the pulley during V-belt removal—a critical capability that eliminates guesswork and reduces risk of pulley damage. If you stock multiple vehicle platforms, consider pairing this with a comprehensive alternator extraction kit for broader application coverage.

Key Features

• Dual-Function Design: Removes the M10 center bolt while holding the freewheel clutch pulley steady in one operation
• Extended 110mm Shaft: Reaches deep into engine bay installations without interference
• 33-Tooth Spline Tip (17mm): Precisely engages Bosch freewheel pulley splines for secure grip and cam-out prevention
• Chrome-Plated 6-Point Socket: M10 hex socket for the center pulley bolt with knurled grip ring
• 1/2-Inch Drive Compatibility: Integrates seamlessly into standard socket sets and ratchet systems
• Black Oxide Coated Adapter: Durable finish with vertical ribbing for secure hand positioning

Vehicle Applications

Primary Fitment:

• Volkswagen Golf, Vento, Passat (multiple generations)
• Audi A3 (early to mid-model runs)
• Volvo models with Bosch alternators

Technical Scope: Compatible with Bosch alternators featuring freewheel clutch pulleys (standard on many European vehicles 1990s–2010s).

Why This Matters for Your Shop

Efficiency Gain: Eliminates the need for multiple tools or improvised techniques. One socket performs both bolt removal and pulley retention—reducing labor time per job and improving technician confidence.

Damage Prevention: The spline engagement prevents rounded bolt heads and pulley damage, reducing comebacks and warranty exposure.

Inventory Consolidation: Covers a critical gap in alternator service tooling. Shops handling VW/Audi/Volvo brands encounter these pulleys regularly; having the correct tool directly impacts service profitability.

Reseller Advantage: Alternator service is a high-margin shop operation. This specialized tool is a stock item that justifies premium pricing—shops will pay for precision and speed.

Technical Specifications

Specification	Detail
Center Bolt Size	M10
Shaft Length	110mm
Spline Tooth Count	33-tooth
Spline Tip Diameter	17mm
Socket Drive	1/2-inch square drive
Socket Type	6-point hex (M10)
Material	Chrome-plated steel (socket), hardened steel (shaft & spline tip)
Finish	Chrome plating (socket), black oxide coating (adapter)
Weight	Approx. 0.35 kg

Stock Strategy

This tool is essential for shops servicing European vehicles. Stock it alongside larger-capacity socket variants for fleets with mixed Bosch alternator generations. The specificity of the spline design means technicians cannot substitute this tool—they either have it or the job stalls.

Bottom Line: A high-velocity specialty socket that commands resale margins and positions your catalog as a trusted resource for precision European vehicle service.