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Specifications
- DIM 1:21mm Belt x 56mm Rib OD x 17mm Bore, M16 Threads
- DIM 2:15.5mm from hub to center of 1st groove
- DIM A (MM):17
- DIM B (MM):55.87
- DIM C (MM):40.95
- DIM D (MM):14.55
- FEATURE 1:100% New
- FEATURE 2:Premium 2 Year Warranty
- GROOVES:6
- SPECS FOR:Bosch IR/IF Alternators
- SPECS:6-Groove Clutch Pulley
- TYPE:OAP
USED ON
- Audi (2000-2013) ** Volkswagen (1999-2016)
Replaces
- Audi, Volkswagen 021-903-119G, 022-903-119A, 022-903-119AM, 022-903-119C, 028-903-119A, 028-903-119AM, 038-903-119A, 038-903-119T, Bosch F 00M 147 600, F 00M 147 737, F 00M 147 801, F 00M 599 534, F 00M 991 002, F 00M 991 122, F 00M 991 206, F 00M 991 218, F 00M 991 284, Hitachi GD2149981, INA Bearing Co 535 0012 10, F-227628, F-227628.04, F-227628.05, F-227628.06, F-227628.07, F-227628.08, F-227628.10, F-227628.11, F-227628.12, F-227628.4, F-227628.5, F-227628.6, F-227628.7, F-227628.8, F-553470, F-553470.01, F-553470.02, F-553470.04, F-553470.05, F-553470.06, F-553470.07, F-553470.1, F-553470.2, Magneton 138600, 138601, Seat 021903119G, 022903119A, 022903119C, 028903119AM, 038903119A, 038903119T, Skoda 021-903-119G, 022-903-119A, 022-903-119C, 028-903-119AM, 038-903-119A, 038-903-119T, Valeo 2536778, 2546778, 2602911, 2604504, 588001, 593491, 593600, 593999
LESTER NUMBERS
- 11019, 11134, 11221, 11257, 11360, 11388, 11563, 11586, 11703, 11721, 12780, 13849, 13851, 13853, 13942, 13947, 20014, 20330, 20350, 20444, 20904, 21473, 23355, 23358, 24090
UNIT NUMBERS
- Audi, Volkswagen 021 903 026 A, 021 903 026 A, 021-903-026-L, 021-903-026-LX, 021-903-026G, 021-903-026GX, 021-903-026L, 021-903-026LX, 022 903 028 A, 022 903 028 AX, 022-903-028A, 022-903-028B, 022-903-028BX, 023-903-028D, 028-903-028E, 028-903-029-G, 028-903-029-GX, 028-903-029G, 028-903-029GX, 028-903-030, 028-903-030A, 037-903-018DX, 038-903-018Q, 038-903-018QX, 038-903-023-Q, 038-903-023-R, 038-903-023K, 038-903-023L, 038-903-023Q, 038-903-023R, 038-903-023S, 038-903-023SX, 038-903-024-C, 038-903-024-E, 038-903-024A, 038-903-024B, 038-903-024C, 038-903-024D, 038-903-024E, 038-903-024F, 038-903-024G, 038-903-024GX, 038-903-029-GX, 038-903-029GX, 03G-903-016-A, 03G-903-016-AX, 03G-903-016A, 03G-903-016AX, 03G-903-023, 03G-903-023, 03G-903-023X, 03G-903-023X, 03L 903 024 F, 03L 903 024 FX, 03L-903-023, 03L-903-023-A, 03L-903-023-AX, 03L-903-023-F, 03L-903-023-FX, 03L-903-023A, 03L-903-023AX, 03L-903-023D, 03L-903-023D, 03L-903-023DX, 03L-903-023DX, 03L-903-023F, 03L-903-023FX, 03L-903-023R, 03L-903-023RX, 03L-903-023X, 03L-903-024-M, 03L-903-024-MX, 03L-903-024M, 03L-903-024MX, 03L-906-023, 03P-903-023-A, 03P-903-023-B, 03P-903-023-BX, 03P-903-023A, 03P-903-023B, 03P-903-023BX, 03P-903-023C, 03P903023CX, 045-903-023, 045-903-023A, 045-903-023AX, 045-903-023B, 045-903-023E, 045-903-023EX, 045-903-023F, 045-903-023FX, 045-903-023G, 045-903-023GX, 045-903-025B, 045-903-025G, 045903023EX, 06B-903-018-H, 06B-903-018-HX, 06B-903-018G, 06B-903-018H, 06B-903-018HX, 06F-903-023-C, 06F-903-023-CX, 06F-903-023-E, 06F-903-023-EX, 06F-903-023-H, 06F-903-023-HX, 06F-903-023A, 06F-903-023AX, 06F-903-023C, 06F-903-023CX, 06F-903-023D, 06F-903-023DX, 06F-903-023E, 06F-903-023EX, 06F-903-023F, 06F-903-023FX, 06F-903-023H, 06F-903-023HX, 06F-903-023J, 06F903023JX, 074 903 018 A, 074 903 025 S; Bosch 0 121 715 003, 0 121 715 047, 0 121 715 071, 0 121 715 103, 0 121 715 171, 0 124 315 001, 0 124 315 013, 0 124 315 032, 0 124 325 001, 0 124 325 012, 0 124 325 047, 0 124 325 073, 0 124 325 083, 0 124 325 092, 0 124 325 101, 0 124 325 130, 0 124 325 131, 0 124 325 166, 0 124 325 178, 0 124 515 010, 0 124 515 022, 0 124 515 101, 0 124 515 117, 0 124 515 121, 0 124 515 124, 0 124 515 125, 0 124 525 027, 0 124 525 039, 0 124 525 050, 0 124 525 066, 0 124 525 067, 0 124 525 090, 0 124 525 091, 0 124 525 092, 0 124 525 098, 0 124 525 187, 0 124 525 525, 0 124 525 542, 0 124 615 017, 0 124 615 038, 0 124 625 010, 0 124 625 028, 0 125 811 009, 0 125 811 027, 0 125 811 028, 0 125 811 036, F 002 G10 862; Chrysler 04801715AA, 05033757AA, 05033757AB, 4801715AA, 5033757AA, 5033757AB; Ford 1100711, 1100712, 1118206, 1188206, 1512890, 1514150, 1580265, 1757737, 6M21-10346-CA, 98VW-10300-CA, RE98VW-10300-CA, RM98VW-10300-EA, RMYM21-10300-AA, YM21-10300-CA, YM21-10300-CA; Ford Engineering 98VW 10300 EA, YM21-CA; Hitachi LR1120-701; John Deere AL166645, SE 50 182 9; Letrika (Iskra) 11.204.478; Letrika (Iskra) Tech. AAK5543, AAK5543, AAK5543, AAK5547, AAK5547, AAK5842, AAN5315, AAN5315, AAN5315, AAN5351, AAN5351, AAN5351; Magneton 9-517-103, 9-517-103, 9-517-103, 9-517-103, 9-517-103, 9-517-213, 9-517-213, 9-517-213, 9-517-213, 9-517-403, 9-517-403, 9-517-403, 9-517-413, 9-517-413, 9-517-413, 9-517-413, 9-517-464, 9-517-464; Marelli 063533150130, 063533250010, 063535150220, 063535250920, 063535255250, 063535255420, 063537151710, 943355059010, 943355059010, 943355139010, 943355139010, 943355139010, 944390414800, 944390414900, 944390418600; Mercedes-Benz 000-154-02-02, HVW 000 154 00 02, HVW 000 154 01 02, HVW 000 154 02 02, HVW-000-154-02-02; Mitsubishi 1800A066; Original Reference Number 038-903-018-Q, 38522319F, 528110010, A609874A; Skoda 03G-903-023, 03L-903-023G; Valeo 437689, 437689, 439734, 440324, FG18T033, FGN18T033, SG12B015, SG12B015 SP, SG12B090, SG8B013, SG8B027, SG9B015, SG9B015 SP, SG9B078, SG9B078 SP, TG11C017, TG14C011, TG14C015, TG14C016, TG14C026, TG14C031, TG14C035, TG14C036, TG14C057, TG17C019, TG17C024, TG17C024 SP, TG17C054; VM Motori 38 52 23
Features & Benefits
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Genuine OEM replacement part
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Manufactured to original factory specifications
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Designed to match original fit, function, and performance
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Helps reduce belt vibration and accessory drive noise
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Supports smooth alternator operation during engine acceleration and deceleration
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Engineered for dependable long-term reliability
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Ideal for alternator rebuilding and repair
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 with a genuine OEM component helps restore the original operating characteristics intended by the manufacturer and promotes long-term charging system reliability.
Common Signs Replacement Is Needed
Replace the alternator clutch pulley if you notice:
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Chirping or squealing belt noise
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Excessive belt vibration
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Failing or bouncing belt tensioner
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Seized or locked pulley
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Free-spinning pulley in both directions
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Rough or noisy pulley bearing
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Premature serpentine belt wear
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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. Before installation, inspect the alternator shaft, threads, front bearing, belt tensioner, serpentine belt, and accessory drive components for signs of wear or damage.
Verify that the replacement pulley matches the original OEM 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:
Why Buy From RC Auto Electric?
RC Auto Electric specializes in genuine OEM and premium aftermarket 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 OEM 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.
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Frequently Asked Questions
How do I confirm compatibility? +
Compare part numbers, dimensions and photos with the original component.
Is this OEM or aftermarket? +
This listing is for an aftermarket replacement part.
What should I verify before ordering? +
Check all fitment and application details before purchase.
Is professional installation recommended? +
Professional installation is recommended.
Where can I find related parts? +
Browse related starter and alternator categories on RCAutoElectric.