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BMW E34 525i M50 2.5L

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BMW E34 525i M50 2.5L Engine Pulley Parts

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Protection Ring

ES#21663 - 11281730532 - Protection Ring - Seals the back side of the hydraulic alternator belt tensioner roller from debris - Genuine BMW - BMW

Seals the back side of the hydraulic alternator belt tensioner roller from debris

Brand:
Genuine BMW - Corporate Logo
ES#:
21663
Mfg#:
11281730532
In Stock
$3.89 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Pulley Puller

ES#4371952 - W80653 - Pulley Puller - Pulls pressed on 1 and 2 groove pulleys on alternators and power steering pumps. - Performance Tool - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Pulls pressed on 1 and 2 groove pulleys on alternators and power steering pumps.

Brand:
Performance Tool - Corporate Logo
ES#:
4371952
Mfg#:
W80653
Ships in 1 Business Day
$29.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Protective Cap For Belt Tensioner

ES#21660 - 11281727159 - Protective Cap For Belt Tensioner - Black plastic snap on cap - Genuine BMW - BMW

Black plastic snap on cap

Brand:
Genuine BMW - Corporate Logo
ES#:
21660
Mfg#:
11281727159
In Stock
$14.10 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hex Bolt With Washer - M8x35mm

ES#14743 - 07119905533 - Hex Bolt With Washer - M8x35mm - Secures mechanical A/C and alternator belt tensioner to bracket - Genuine BMW - BMW MINI

Secures mechanical A/C and alternator belt tensioner to bracket

Brand:
Genuine BMW - Corporate Logo
ES#:
14743
Mfg#:
07119905533
In Stock
$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hydraulic Alternator Belt Tensioner Roller

ES#2776538 - 11281748131 - Hydraulic Alternator Belt Tensioner Roller - Replacement is recommend with every belt service - Vaico - BMW

Replacement is recommend with every belt service We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2776538
Mfg#:
11281748131
In Stock
$30.99

This product was last offered at the strikethrough price on
05-07-2026

$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Idler Pulley

ES#2873680 - 11287841228 - Idler Pulley - Runs on water pump and alternator belt, used on both mechanical and hydraulic tensioner systems - Febi - BMW

Runs on water pump and alternator belt, used on both mechanical and hydraulic tensioner systems We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2873680
Mfg#:
11287841228
In Stock
$48.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hydraulic Alternator Belt Tensioner

ES#2813357 - 11281717188 - Hydraulic Alternator Belt Tensioner - Hydraulic tensioner for alternator belt, ideal for servicing high mileage tensioner - Hamburg Tech - BMW

Hydraulic tensioner for alternator belt, ideal for servicing high mileage tensioner We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2813357
Mfg#:
11281717188
Ships in 1 Business Day
$46.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hydraulic Alternator Belt Tensioner Assembly

ES#5480937 - 11287838797 - Hydraulic Alternator Belt Tensioner Assembly - Hydraulic tensioner assembly for alternator/water pump belt, does not come with roller/pulley - Bremmen Parts - BMW

Hydraulic tensioner assembly for alternator/water pump belt, does not come with roller/pulley 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
5480937
Mfg#:
11287838797
Ships on Nov 16, 2026
$59.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump Pulley

ES#24390 - 11511730554 - Water Pump Pulley - Located behind the fan blade, fan clutch bolts to this pulley - Genuine BMW - BMW

Located behind the fan blade, fan clutch bolts to this pulley

Brand:
Genuine BMW - Corporate Logo
ES#:
24390
Mfg#:
11511730554
Ships in 1-2 days
$49.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Protective Cap

ES#29427 - 12311713143 - Protective Cap - Protects the upper mounting bolt of the hydraulic alternator belt tensioner assembly from debris - Genuine BMW - BMW

Protects the upper mounting bolt of the hydraulic alternator belt tensioner assembly from debris

Brand:
Genuine BMW - Corporate Logo
ES#:
29427
Mfg#:
12311713143
In Stock
$1.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Belt tensioner base plate

ES#21659 - 11281726774 - Belt tensioner base plate - Used to mount the belt tensioner to the engine - Genuine BMW - BMW

Used to mount the belt tensioner to the engine

Brand:
Genuine BMW - Corporate Logo
ES#:
21659
Mfg#:
11281726774
Ships in 4 Business Days
$67.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Tensioner Pully- New

ES#2813364 - 11281748130 - Tensioner Pully- New - Runs on water pump and alternator belt, used on both mechanical and hydraulic tensioner systems - Hamburg Tech - BMW

Runs on water pump and alternator belt, used on both mechanical and hydraulic tensioner systems We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2813364
Mfg#:
11281748130
Ships in 1 Business Day
$20.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sealing Washer - Priced Each

ES#20449 - 11231288660 - Sealing Washer - Priced Each - used in the belt drive - Genuine BMW - BMW

used in the belt drive

Brand:
Genuine BMW - Corporate Logo
ES#:
20449
Mfg#:
11231288660
Ships in 2 Business Days
$14.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Mechanical Alternator Belt Tensioner Assembly

ES#2187565 - 11281427252 - Mechanical Alternator Belt Tensioner Assembly - Tensions the belt connecting the water pump, alternator, and power steering pump. Includes roller. - URO - BMW

Tensions the belt connecting the water pump, alternator, and power steering pump. Includes roller. 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2187565
Mfg#:
11281427252
Ships in 1 Business Day
$50.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Deflection Pulley

ES#3676938 - V200209 - Deflection Pulley - Helps guide and keep tension on the belt. - Vaico - BMW

Helps guide and keep tension on the belt. We Price Match - Give Us A Call or Chat! For Vehicles With A Clockwise Power Steering Pump Only

Brand:
Vaico - Corporate Logo
ES#:
3676938
Mfg#:
V200209
Ships in 1 Business Day
$46.44 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Mechanical Alternator Belt Tensioner Assembly

ES#2866914 - 11281427252 - Mechanical Alternator Belt Tensioner Assembly - Tensions the belt connecting the water pump, alternator, and power steering pump. Includes roller. - Febi - BMW

Tensions the belt connecting the water pump, alternator, and power steering pump. Includes roller. We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2866914
Mfg#:
11281427252
Ships in 1 Business Day
$80.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Pulley Parts

Pulleys drive accessories essential to vehicle operation. Whether you need to install a stock original equipment pulley during a repair, or improve engine performance and appearance with a lightweight aluminum or underdrive pulley, count on ECS Tuning for pulley solutions that work.

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Manufacturer names and/or part numbers are used only for identification purposes.

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