Aftermarket Bosch Alternator Clutch Pulley 24-91289

• BMW 11-31-4-466-273, 11-31-7-516-103, 12-31-4-466-273, 12-31-7-516-103, 12-31-7-552-353, 12-31-7-560-483, Bosch F 00M 147 746, F 00M 147 914, F 00M 349 820, F 00M 349 898, F 00M 391 122, F 00M 391 157, F 00M 391 159, F 00M 991 141, F 00M 991 301, F 00M A47 701, F00M147746, F00M147914, F00M349820, F00M349898, F00M391122, F00M391159, F00M991141, F00M991301, F00MA47701, INA Bearing Co 535 0082 10, 535 0183 10, F-236528, F-236528.01, F-236528.02, F-236528.03, F-236528.04, F-236528.06, F-236528.07, F-236528.1, F-236528.3, F-236528.4, F-236528.6, F-236528.7, Valeo 588036

Features & Benefits

• Precision aftermarket replacement part

• Designed to match original fit, function, and performance

• Helps reduce belt vibration and accessory drive noise

• Supports smooth alternator operation during engine acceleration and deceleration

• Manufactured for dependable long-term operation

• Ideal for alternator rebuilding and repair

• Cross-referenced to OEM and aftermarket part numbers

What Does an Alternator Clutch Pulley Do?

An alternator clutch pulley, also known as an overrunning alternator pulley (OAP) or overrunning alternator decoupler (OAD), allows the alternator rotor to continue spinning independently during engine deceleration. This helps reduce belt vibration, minimizes stress on the serpentine belt drive system, and improves overall accessory drive performance.

A properly functioning clutch pulley helps reduce belt noise, improves belt tensioner stability, and protects the alternator and related drive components from excessive shock loads. Replacing a worn or seized clutch pulley is an important step in restoring proper belt system operation and extending the service life of the alternator.

Common Signs Replacement Is Needed

Replace the alternator clutch pulley if you notice:

• Chirping or squealing belt noise

• Excessive belt vibration

• Failing or bouncing belt tensioner

• Seized or locked pulley

• Free-spinning pulley in both directions

• Rough or noisy pulley bearing

• Premature serpentine belt wear

• Clutch pulley failure discovered during alternator rebuilding

Installation Recommendations

Installation should be performed by a qualified technician or experienced alternator rebuilder. Always use the correct clutch pulley removal and installation tools designed for your alternator application. Inspect the alternator shaft, threads, front bearing, belt tensioner, serpentine belt, and accessory drive components for signs of wear or damage before installation.

Verify the replacement pulley matches the original pulley design, rotation, thread specifications, and overall dimensions. After installation, ensure the pulley operates smoothly and verify proper belt alignment and tension before returning the alternator to service.

While You're Rebuilding

Inspect other common wear components to help maximize charging system reliability:

• Bearings

• Brushes

• Brush Holder

• Slip Rings

• Voltage Regulator

• Rectifier

• Rotor

• Stator

• Insulators

Why Buy From RC Auto Electric?

RC Auto Electric specializes in alternator and starter rebuilding components for professional rebuilders, repair shops, automotive technicians, and DIY enthusiasts. Our extensive catalog includes thousands of OEM and aftermarket electrical components backed by accurate cross-reference information to help simplify part identification and reduce ordering mistakes.

Disclaimer

Compatibility information is provided as a reference only. Manufacturing revisions, production changes, and previous rebuilding modifications may affect internal alternator components. Always compare the original part, pulley style, thread specifications, dimensions, cross-reference numbers, and product photographs before installation. If you are unsure about compatibility, contact RC Auto Electric before ordering.