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Supplementary article/info 2	requires special tools for mounting
Width (mm)	40
Ø1/ Ø2 (mm)	50,0/17,0
For manufacturer number	f-239992.xx
Number of grooves	8
Svhc	no svhc present!
Distance to first groove (mm)	7.6

Product number: 535 0119 10

Ina Overrunning Alternator Clutch Pulley For Mercedes-benz E-class Gl-class M-class S-cla

In stock

Shipping method	Delivery time	Stock
Shipping	18-8-2025	1

Price excl. vat.

£ 31,40

Add to cart

Description

INA Belt Drive Technology

Overrunning Alternator Pulley (OAP)

The INA OAP uses a one-way clutch so the alternator can “free-wheel” during sudden belt deceleration. This calms belt vibration, reduces noise at shut-down/gear changes, and protects the tensioner and belt for longer life.

Lower NVH Stabilised FEAD OE-grade reliability

INA Overrunning Alternator Pulley main view

What It Does

One-way clutch: allows the alternator rotor to coast when the belt slows suddenly (overrun), reducing belt snap and chirp.
Smoother accessory drive: helps the tensioner work within its normal range and limits oscillation.
Longer component life: less stress on belt, tensioner, alternator bearings, and other FEAD parts.

When to Replace

Chirping at engine shut-down or during shifts; rumble/squeal from alternator area.
Tensioner arm “flutters” or sits off-center at idle; belt tracking issues.
Alternator charging faults due to belt slip or pulley clutch seizure.
Excessive play/roughness when the pulley is checked off-vehicle.

Important: Fit the same type the vehicle was built with. Don’t swap an OAP for an OAD (decoupler) or a solid pulley — they are not interchangeable.

How to Fit (Universal Guide)

Preparation: Engine cold, battery disconnected. Photograph belt routing. Remove the FEAD belt.
Lock the rotor: Use the correct alternator holding tool (insert in the rotor shaft) and a matching OAP removal socket for the pulley splines/hex.
Remove old pulley: Hold the rotor steady; loosen the pulley in the correct direction (usually standard thread, but verify OE info). Remove any dust cap/shroud.
Check & clean: Inspect alternator shaft and threads; clean and lightly degrease. Do not grease the belt or pulley grooves.
Install new INA OAP: Thread on by hand to avoid cross-threading. Hold rotor and torque the pulley to the manufacturer’s spec. Refit the protective cap.
Refit belt & test: Route belt, ensure all ribs seat. Start engine, watch tensioner movement, listen for noise, and confirm charging performance.

Always follow the exact torque values and procedures in the workshop manual. Use the proper INA/REPXPERT special tools to avoid alternator damage.

Quick Function Check (Off-Vehicle)

Pulley should rotate freely in the overrun direction and lock in the drive direction.
Any grinding, binding, or free-wheeling both ways = replace.

Manufacturer	Productnumber
mercedes-benz	629 150 00 50 , 6291500050
mercedes-benz	629 150 01 60 , 6291500160
mercedes-benz	629 150 04 50 , 6291500450
mercedes-benz	6291500050
mercedes-benz	6291500160
mercedes-benz	6291500450
mercedes-benz	A 629 150 00 50 , A6291500050
mercedes-benz	A 629 150 01 60 , A6291500160
mercedes-benz	A 629 150 04 50 , A6291500450
mercedes-benz	A6291500050
mercedes-benz	A6291500160
mercedes-benz	A6291500450

Usage numbers
AS-PL AFP0036
AUTEX 654369
BOSCH 0 121 813 004
BOSCH 0 121 813 005
BOSCH 0 121 813 105
BOSCH 0 986 047 620
BOSCH 0 986 047 810
BOSCH 0121813004
BOSCH 0121813005
BOSCH 0121813105
BOSCH 0986047620
BOSCH 0986047810
BOSCH F 00M 349 829
BOSCH F00M349829
BOSCH F00M391105
BOSCH F00M391145
BREDA LORETT CR 3846
BREDA LORETT CR3846
DAYCO ALP2384
FEBI BILSTEIN 33472
GATES 7789-10111
GATES 778910111
GATES OAP7137
LUCAS ELECTRICAL LOPA0100
RUVILLE 55193
SCHAEFFLER GRUPPE 535 0119 10
SCHAEFFLER GRUPPE 535011910
Schaeffler INA F-239992
Schaeffler INA F-239992.01
Schaeffler INA F-239992.02
Schaeffler INA F-239992.03
Schaeffler INA F-239992.04
Schaeffler INA F-239992.05
Schaeffler INA F239992
Schaeffler INA F23999201
Schaeffler INA F23999202
Schaeffler INA F23999203
Schaeffler INA F23999204
Schaeffler INA F23999205
SKF VKM 03835
SKF VKM03835
SNR GA751.14
SNR GA75114
TRIPLE FIVE 235721
TRIPLE FIVE 3 5334 1
TRIPLE FIVE 353340
TRIPLE FIVE 353341
VALEO 588100
ZEN 5849

Manufacturer	Model	Version	Engine code	Construction type	Construction start	Construction end	Pk	Power kw
mercedes-benz

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