Prokomon Alternator Pulley Tool Kit 13-Piece — Chrome-Vanadium Bosch-Style Spline & Star Sockets

Prokomon’s 13-piece alternator pulley tool kit is a complete set of chrome-vanadium sockets, splines and adapters designed to remove, hold and install Bosch-style alternator decoupler and one-way-clutch pulleys both on and off the vehicle.

This toolkit gives professional mechanics and DIYers the correct fittings to tackle modern alternator pulleys without improvisation. Built from chrome vanadium steel with a black-oxide finish and polished contact surfaces, the kit is intended to protect shafts while providing the leverage and engagement needed to remove stubborn pulley retainers. It includes standard and short-length bits so you can work in tight engine bays as well as on a bench-mounted alternator.

How does this kit make alternator pulley service easier?

The set groups the specific spline and star sockets you need for Bosch-type alternator drive pulleys and decouplers, so you avoid trial-and-error with improper tools. Correct engagement reduces rounding of fasteners and protects the alternator shaft during removal and installation.

• 13-piece assortment covers common spline and star sizes used on OE Bosch pulleys
• Includes short and standard lengths to reach recessed fasteners
• Chrome vanadium construction resists wear under high torque

Can I use the Prokomon set on and off the vehicle?

Yes — the kit is designed for both in-vehicle removal and bench work. The mix of lengths and adapters lets you hold the alternator shaft while extracting the pulley retainer, whether the alternator remains mounted or is removed for servicing.

• On-vehicle compatibility for tight engine compartments
• Off-vehicle use for secure bench removal and inspection
• Adapters allow shaft holding while turning the retainer

Which pulley types and vehicles will this set work with?

This Prokomon kit targets overlay alternator decouplers (OADs) and one-way clutch (OWC) pulleys commonly found on Bosch-style alternators. While not universal, the included spline and star sizes fit many makes and models that use these OE-style components.

• Compatible with many Bosch-type alternator decoupler and clutch pulleys
• Useful across a wide range of passenger cars and light trucks
• Not intended for proprietary or non-Bosch spline profiles without verification

What materials and finishes protect the tools and components?

Tools are manufactured from chrome vanadium (CR-V) steel for strength and longevity, with a black-oxide finish to resist corrosion and polished contact faces to reduce galling. These choices balance durability with careful engagement to limit damage to alternator components.

• CR-V construction withstands repeated torque cycles
• Black-oxide coating reduces surface rust
• Polished bits minimize wear on mating fasteners and shafts

Who is this for: The Prokomon 13-piece alternator pulley tool kit suits professional technicians and experienced DIY mechanics who service modern alternators, especially those replacing decoupler or one-way-clutch pulleys on Bosch-style units. If you regularly perform belt-driven accessory maintenance and want a focused, durable toolkit for safe pulley removal and installation, this set is designed to save time and avoid damage compared with improvised tools.