Accessory Belt Service Kit w/ Kevlar Reinforced Belt - BMW N55 F-Chas...

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T#:22097553

Part#: 11287628661TKT

Ships on Feb 23, 2027

Sale - Save 23% $ 131.99

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$ 101.98 USD

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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belt, tensioner assembly, and idler pulley. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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OEM Accessory Belt Service Kit - F3X F22/23 N55 3.0L

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T#:587391

Part#: 11287628661ABKT

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$ 171.99

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06-09-2026

$ 153.99 USD

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This kit includes the basic components recommended to replace when it comes time to swap out your accessory belt.

OEM Accessory Belt Service Kit - N54 3.0L

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T#:554448

Part#: N54ACCKT

Ships in 1 Business Day

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04-15-2026

$ 187.11 USD

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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or overheated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need replaced such as the belts, tensioners, and hardware.

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OEM Accessory Belt Service Kit - E82/88 E9X N55

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T#:567679

Part#: 11287582946KT4

Ships in 5 Business Days

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10-12-2026

$ 205.87 USD

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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or overheated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need to be replaced such as the belts, tensioners, and hardware.

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OEM Accessory Belt Service Kit - N52 3.0L

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T#:593693

Part#: N52ABKT

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07-08-2026

$ 105.43 USD

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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or overheated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need replaced such as the belts, tensioners, and hardware.

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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - BMW E82/88 E9X...

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T#:22163422

Part#: 11287568247TKT

Ships on Nov 12, 2026

Sale - Save 15% $ 209.99

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04-15-2026

$ 178.94 USD

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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belt, tensioner assembly, and idler pulleys. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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OEM Accessory Belt Service Kit - F3X F10 N20 2.0L

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T#:587390

Part#: 11287594969ABKT

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This product was last offered at the strikethrough price on
06-29-2026

$ 62.94 USD

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This kit includes the basic components recommended to replace when it comes time to swap out your accessory belt.

Accessory Belt Service Kit w/ Kevlar Reinforced Belt - BMW N52 ...

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T#:22130432

Part#: 11287530314TKT

In Stock

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05-03-2026

$ 104.71 USD

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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belt, tensioner assembly, and idler pulley. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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Hydraulic Alternator Belt Tensioner Assembly

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T#:396757

Part#: 11287838797

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$ 53.99 USD

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Friction Wheel N12 N14 N16 N18 1.6L Engine

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T#:591689

Part#: 11287598833

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$ 84.99 USD

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Friction Wheel for MINI N12 N14 N16 N18 1.6L Engine - URO

Upgrade your MINI's engine with the Friction Wheel for N12 N14 N16 N18 1.6L engine from URO. This friction wheel serves as a vital link between two pulleys, driving the water pump for optimal engine performance. Over time, the bearings in this unit may begin to squeak and fail, making it essential to replace when changing the serpentine belt.

Benefits:

Ensures smooth operation of the water pump
Prevents squeaking bearings for quieter engine performance
Designed for compatibility with N12 N14 N16 N18 1.6L engines
Easy replacement during serpentine belt changes

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URO Drive Belt Tensioner W/ Pulley - BMW F8X M2 M3 M4

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T#:50066851

Part#: 11288088632

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$ 60.99 USD

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Replaces broken or damaged drive belt tensioner.

URO Aluminum Water Pump Pulley - E39, E46, E53, E60, E83, Z3, Z4 ...

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T#:340641

Part#: 11511436590

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$ 45.99 USD

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An upgrade over commonly failing plastic pulley

URO Crankshaft Vibration Damper - 11237573655

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T#:28171559

Part#: 11237573655

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$ 341.99 USD

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A vibration damper is crucial for preventing shock load factors that could damage the crankshaft. If your damper is faulty, opt for this quality replacement from URO Parts for a lasting and comprehensive fix.

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N54 AC Delete Accessory Belt Kit - BMW N54 3.0L

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T#:26771665

Part#: 7PK1660KT

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05-03-2026

$ 66.28 USD

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This AC Delete Accessory Belt Kit includes a new idler pulley and a shorter ECS Kevlar belt for deleting your AC compressor. ECS Tuning Performance Kevlar reinforced belts give you that extra piece of mind! Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Tensile strength Elongation Hardness Temperature and oil resistance per standard JASO E 109-94 Flex testing per SAE J2432

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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - F3X F10 N20 2....

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T#:22097555

Part#: 11287618848TKT

Ships on Nov 12, 2026

Sale - Save 34% $ 106.99

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06-01-2026

$ 70.48 USD

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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belt and an OEM tensioner assembly. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the tensioner and upgrading your accessory belt is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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URO Hydraulic Belt Tensioner - BMW E9X M3, E60 M5, E63 M6

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T#:48573724

Part#: 11287835417

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$ 120.11 USD

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Hydraulic Belt Tensioner for E9x M3 with S65 engine and E60 M5, E63 M6 with S85 engine. This oil-filled tensioner keeps the main drive belt in the proper tension. Over time, the seals wear, allowing fluid to leak out and the tensioner then becomes frozen or inoperable. Replacement is the best corrective action to take. This can be done during any belt or pulley service or anytime the fan is off the engine.

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Rein Water Pump Pulley - E39, E46, E53, E60, E83, Z3, Z4

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T#:591711

Part#: 11511436590

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$ 50.99 USD

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A common failing piece due to the plastic design.

Crankshaft Pulley

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T#:591616

Part#: 11281735358

Ships in 1 Business Day

$ 98.99 USD

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Reduces vibrations and connects accessories

Rein Water Pump Pulley - E34, E36, E39, Z3

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T#:591716

Part#: 11511730554

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$ 49.99 USD

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

Power Steering Pump Pulley

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T#:592383

Part#: 32421722555

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$ 90.99 USD

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Driven by serpentine accessory belt

Water Pump Pulley

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T#:638798

Part#: 11517840403

Ships in 1 Business Day

$ 57.99 USD

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Rein Power Steering Pulley E88 135i, E90 335i/335xi, E84 X1 35i xDriv...

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T#:34147755

Part#: 32427582947

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$ 71.99 USD

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Power Steering Pulley is a vital component in your BMW’s power steering system, designed to maintain smooth and responsive steering performance. Available from Turner Motorsport, this high-quality pulley ensures the efficient operation of your power steering pump by providing optimal belt tension and reducing wear. Built to OEM specifications, the Power Steering Pulley is a direct-fit replacement, making installation easy and hassle-free for BMW owners and mechanics alike.

Made from durable materials, this pulley is designed to withstand the rigors of daily driving, offering long-lasting performance and reliability. It’s the perfect solution for those looking to restore or maintain the functionality of their BMW’s power steering system.

Key Benefits:

Ensures smooth and efficient power steering operation
Direct OEM fit for easy installation
Reduces wear on the power steering belt and pump
Made from durable materials for long-lasting performance
Available from Turner Motorsport, a trusted source for BMW parts

This Power Steering Pulley is an essential part for maintaining the functionality and reliability of your BMW’s power steering system.

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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - F07/10 F06/12/...

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T#:23482929

Part#: 8PK1478TKT

Ships on Nov 12, 2026

Sale - Save 23% $ 167.99

This product was last offered at the strikethrough price on
05-03-2026

$ 129.72 USD

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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belt, tensioner assembly, and new pulleys. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - F8X S55 ...

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T#:22163426

Part#: 11287848605TKT

Ships on Nov 12, 2026

$ 414.99

This product was last offered at the strikethrough price on
08-07-2026

$ 385.99 USD

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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes ECS Kevlar Reinforced Drive Belts, tensioner assembly, and idler pulleys. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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OEM Accessory Belt Service Kit - E30 M20

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T#:554430

Part#: 64521706826KT1

Ships on Oct 29, 2026

$ 202.67 USD

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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or over heated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need replaced such as the belts, tensioners, and hardware.

Fits the following BMWs:
1984-1991 E30 BWM 325, 325i/is/ix, 325e/es

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Accessory Belt Service Kit - E39 E46 M54 (2002+)

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T#:401685

Part#: 11287512762KT3

Ships in 8 Business Days

Sale - Save 23% $ 228.99

This product was last offered at the strikethrough price on
06-23-2026

$ 176.65 USD

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This kit covers many of the common wear items that should be changed any time the serpentine belt is being replaced. As these cars gain years and mileage the belt tensioners will also need to be replaced along with the actual belts. It won't do any good to replace the belt if the tensioners are worn. This kit will save you time and money over buying these pieces individually. This kit includes an updated hydraulic alternator tensioner for added reliability and longevity.

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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - F22/23 F3X B58...

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T#:22097533

Part#: 11288613707TKT

Ships on Nov 12, 2026

Sale - Save 24% $ 137.99

This product was last offered at the strikethrough price on
05-03-2026

$ 105.35 USD

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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belt, tensioner assembly, and the hardware required to install the new tensioner. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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Drive Wheel For Water Pump

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T#:5760271

Part#: 11517619020

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$ 42.01

This product was last offered at the strikethrough price on
09-08-2026

$ 41.99 USD

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Mechanical Belt Tensioner - NTN/NSK Bearings

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T#:591687

Part#: 11287571015

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$ 53.99 USD

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Accessory Belt Service Kit w/ Kevlar Reinforced Belt - BMW E82/88 E9X...

10X Entries Into Our F80 M3 Sweepstakes

T#:22163417

Part#: 11287582946TKT

Ships on Nov 12, 2026

Sale - Save 9% $ 223.99

This product was last offered at the strikethrough price on
09-16-2026

$ 204.63 USD

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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belt, belt tensioner, and idler pullies. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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Performance Accessory Belt Kit - Kevlar Reinforced - BMW B46TU/B48TU...

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T#:29798952

Part#: 11288650740T1KT

Ships on Nov 12, 2026

Sale - Save 24% $ 137.99

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05-03-2026

$ 105.35 USD

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Having your accessory belt fail is a major inconvenience and can leave you on the side of the road if the alternator isn't charging and the mechanical water pump isn't turning. Over time the tensioner and the belt itself wears out and will eventually fail. This kit includes everything you need to service the belt drive system and keep everything in check. Included: ECS Tuning Kevlar Reinforced Performance Accessory Belt - Designed to resist OEM Febi Belt Tensioner Genuine BMW Tensioner Hardware

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Accessory Belt Tensioner Assembly

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T#:591622

Part#: 11287563927

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$ 60.99 USD

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This is the main belt tensioner for A/C, Alternator, and power steering.

Mechanical Alternator Belt Tensioner Assembly

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T#:371980

Part#: 11281427252

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$ 50.99 USD

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Tensions the belt connecting the water pump, alternator, and power steering pump. Includes roller.

Crankshaft Pulley With Vibration Damper

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T#:593668

Part#: 11237564969

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$ 234.99 USD

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Every time the cylinders fire, torque is transferred into the crankshaft. The crankshaft deflects under this torque, which sets up vibrations when the torque is released. At certain engine speeds the torque imparted by the cylinders are in synch with the vibrations in the crankshaft, which results in a phenomenon called resonance This resonance causes stress beyond what the crankshaft can withstand, resulting in crankshaft failure. The accessory pulley acts as a balancer and prevents these vibrations from destroying your crankshaft.

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OEM Accessory Belt Service Kit - BMW F8X S55

10X Entries Into Our F80 M3 Sweepstakes

T#:589853

Part#: PBTABF8XS55KT

In Stock

$ 433.99

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

$ 412.99 USD

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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or overheated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need replaced such as the belts, tensioners, and hardware.

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S54 Turner Motorsport Ultimate Power Pulley And Drive Belt Overhaul S...

10X Entries Into Our F80 M3 Sweepstakes

T#:15710772

Part#: 11281730349-KT

Ships in 8 Business Days

Sale - Save 1% $ 499.99

This product was last offered at the strikethrough price on
05-03-2026

$ 494.69 USD

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The idea of power pulleys is simple. The less effort the engine puts into running accessories such as the water pump, power steering, pump alternator etc., the more of that power can be used elsewhere - your wheels! The way this is done by reducing the rotation of the pulleys by as much as 10-20%! The end result is more horsepower at your disposal. Turner has done extensive testing (on and off the track), to ensure that the accessory systems still function as intended and without failure. These pulleys offer an excellent compromise of power gains, reliability and performance. All Turner pulleys are constructed of high quality T-6061 aluminum for durability and longevity. They are also finished in a black hard anodizing, which is highly resistant to wear including chemical and heat exposure. They have been designed to carry stock-like aesthetics, but with increased strength properties and lighter weight. Because of the durable aluminum construction, you can also put the worries of a serious plastic failure to rest. These pulleys will last, all the while increasing horsepower too! While you're installing your Power Pulley Kit, it makes sense to overhaul your Accessory Belt System as well, so this kit includes our Accessory Belt Kit as well.

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N54 "Bulletproof" Crank Hub & Serpentine Kit - BMW E82/88 E9X N54 3.0...

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T#:1241396

Part#: TMSN54BPKT

Ships on Dec 18, 2026

$ 569.99 USD

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BMW has a seemingly endless number of fans of the N54/N55/S55 engines, three straight-six turbo engines that are each capable of 750+ horsepower, but that doesn't mean they were without their faults! BMW's N54 had a notoriously rocky start with reliability due to multiple issues such as fuel injectors failing, turbos failing, serpentine belt failure, crank hubs coming loose, and more... BMW made multiple attempts to fix the issues plaguing the N54, but they could only do so much and the fixes rolled out seemed temporary at best. Following the N54, BMW released their updated N55 and S55 engines, giving many people hope that these engines would address the previous issues. Unfortunately, this was only some-what the case. Crank hubs and crank bolts continued to loosen over time and serpentine belts continued to shred themselves and get pulled into the oil pan through the front main seal. For all three engines, this meant a single failure could effectively turn your engine into an oversized paperweight. Luckily for us, the BMW community is full of skilled enthusiasts who have gladly taken up the task to offer solutions! The first headache to be addressed was the Crank Hub and Bolt. Using a simple plate that fits perfectly over your crank hub's hex-head bolt and mounts up against the damper, the crank bolt is effectively locked in place, preventing it from being able to back out until the plate is fully removed. Next up was the serpentine belt failures. It's not known what exactly causes the serpentine belt to split, but once it does, the pieces hanging off of the belt wrap around and behind the damper. This leads to the belt breaking up into smaller pieces and eventually getting pushed between the crank hub and rear main seal into the oil pan. These small pieces of debris get caught in and block the oil pickup, preventing oil flow and leading to engine failure. To prevent this, multiple aftermarket companies came up with their own versions of Crank Seal Plates. This plate is installed behind the front damper, blocking the opening that allows the serpentine belt to pass between the crank hub and seal, keeping debris out of your oil pan! Also included in this kit are the components to service your front Oil Cooler/Filter Housing gaskets, refresh your drive belt system, and install the aftermarket upgrades. Kit Features and Contents: Vargas Turbo Crank Bolt Capture Vargas Turbo Crank Seal Plate OEM Accessory Belt OEM Belt Tensioner & Idler Pullies Liqui-Moly Longtime High Tech Engine Oil (5w-30) - 7 Liters OEM Hengst Oil Filter OEM Oil Filter/Cooler Housing Gaskets TMS Oil Change Sticker Genuine BMW Full-Strength Coolant - 1 Liter Looking to go even further and upgrade your Crank Hub as well? Check out T#558924

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Idler Pulley

2X Entries Into Our F80 M3 Sweepstakes

T#:26271781

Part#: 11288673720

In Stock

$ 29.99 USD

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$ 29.99 USD

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Belt Tensioner Conversion Kit

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T#:600039

Part#: 11287838797K

Back Ordered

$ 82.99 USD

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$ 82.99 USD

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Update from a mechanical tensioner to a hydraulic style tensioner

Accessory Belt Service Kit w/ Kevlar Reinforced Belt - E36 Z3 M52 S52...

10X Entries Into Our F80 M3 Sweepstakes

T#:22130428

Part#: 11281437929TKT

Ships on Nov 12, 2026

Sale - Save 23% $ 264.99

This product was last offered at the strikethrough price on
05-03-2026

$ 204.94 USD

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$ 264.99

This product was last offered at the strikethrough price on
05-03-2026

$ 204.94 USD

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Eliminate your squeaking accessory belt pulleys and cracked drive belts with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belt, an OEM A/C belt, belt tensioners, an idler pulley, and the hardware required for installation ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the belts, rollers, and tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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OEM Accessory Belt Service Kit - E46 E39 E53 M54 (Pre-09/2002) ...

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T#:554446

Part#: M54ACCKT2

Ships in 8 Business Days

Sale - Save 21% $ 256.99

This product was last offered at the strikethrough price on
06-23-2026

$ 203.92 USD

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Sale - Save 21%

$ 256.99

This product was last offered at the strikethrough price on
06-23-2026

$ 203.92 USD

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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or over heated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need replaced such as the belts, tensioners, and hardware.

Fits the following BMWs:
2000-09/2002 E53 BMW X5 M54
2000-09/2002 E39 BMW M54
1999-09/2002 E46 BMW M54

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Crank Pulley With Dampener for MINI R5X R6X

2X Entries Into Our F80 M3 Sweepstakes

T#:591628

Part#: 11237562801

In Stock

$ 72.00

This product was last offered at the strikethrough price on
07-28-2026

$ 49.78 USD

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$ 49.78 USD

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Enhance your Mini's engine performance with this essential Engine Harmonic Balancer/Vibration Dampener. Designed to smooth out rotational vibrations from the crankshaft, this pulley-driven unit ensures optimal engine operation. When worn, it may produce unusual noises near the passenger's side oil pan, signaling the need for replacement. For comprehensive maintenance, it's advisable to change the hex bolts along with the unit. Benefit from:

Improved engine performance.
Reduction of rotational vibrations.
Prevention of unusual noises.
Compatibility with Mini vehicles.
Easy replacement process.

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Idler Pulley

2X Entries Into Our F80 M3 Sweepstakes

T#:37892100

Part#: 11287578675

Ships in 1 Business Day

$ 28.54 USD

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$ 28.54 USD

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The idler pulley serves as a guide and support for the serpentine belt, ensuring it runs smoothly over the entire system.

Hydraulic Alternator Belt Tensioner Conversion Kit

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T#:15710833

Part#: 11287838797-KT

In Stock

Sale - Save 27% $ 165.99

This product was last offered at the strikethrough price on
05-03-2026

$ 120.96 USD

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Sale - Save 27%

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This product was last offered at the strikethrough price on
05-03-2026

$ 120.96 USD

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The original mechanical design is has been discontinued by BMW. So now Turner offers this complete hydraulic tensioner conversion kit for your BMW alternator/water pump/power steering belt. Changes the old style mechanical design to the updated hydraulic design recommended by BMW. Includes the following parts Hydraulic Tensioner Adjusting Pulley Caps & Dust Guards Securing Hardware

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URO Upper Idler Pulley - BMW N54 3.0L

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T#:591621

Part#: 11287556251

In Stock

$ 28.89

This product was last offered at the strikethrough price on
10-08-2026

$ 23.99 USD

Limited Qty Sale

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$ 28.89

This product was last offered at the strikethrough price on
10-08-2026

$ 23.99 USD

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The higher idler pulley

OEM Accessory Belt Service Kit - E39, E46 M54 (up to 2002)

10X Entries Into Our F80 M3 Sweepstakes

T#:401686

Part#: 11281748131KT2

Ships in 8 Business Days

Sale - Save 19% $ 272.99

This product was last offered at the strikethrough price on
06-23-2026

$ 219.99 USD

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Qty

Sale - Save 19%

$ 272.99

This product was last offered at the strikethrough price on
06-23-2026

$ 219.99 USD

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This kit covers many of the common wear items that should be changed any time the serpentine belt is being replaced. As these cars gain years and mileage the belt tensioners will also need to be replaced along with the actual belts. It won't do any good to replace the belt if the tensioners are worn. This kit will save you time and money over buying these pieces individually. This kit includes an updated hydraulic alternator tensioner for added reliability and longevity.

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N55 "Bulletproof" Crank Hub & Serpentine Kit - BMW E82/88 E9X N55 3.0...

10X Entries Into Our F80 M3 Sweepstakes

T#:1241397

Part#: TMSE90N55BPKT

Ships in 5 Business Days

$ 624.99

This product was last offered at the strikethrough price on
10-12-2026

$ 616.99 USD

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Qty

$ 616.99 USD

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BMW has a seemingly endless number of fans of the N54/N55/S55 engines, three straight-six turbo engines that are each capable of 750+ horsepower, but that doesn't mean they were without their faults! BMW's N54 had a notoriously rocky start with reliability due to multiple issues such as fuel injectors failing, turbos failing, serpentine belt failure, crank hubs coming loose, and more... BMW made multiple attempts to fix the issues plaguing the N54, but they could only do so much and the fixes rolled out seemed temporary at best. Following the N54, BMW released their updated N55 and S55 engines, giving many people hope that these engines would address the previous issues. Unfortunately, this was only some-what the case. Crank hubs and crank bolts continued to loosen over time and serpentine belts continued to shred themselves and get pulled into the oil pan through the front main seal. For all three engines, this meant a single failure could effectively turn your engine into an oversized paperweight. Luckily for us, the BMW community is full of skilled enthusiasts who have gladly taken up the task to offer solutions! The first headache to be addressed was the Crank Hub and Bolt. Using a simple plate that fits perfectly over your crank hub's hex-head bolt and mounts up against the damper, the crank bolt is effectively locked in place, preventing it from being able to back out until the plate is fully removed. Next up was the serpentine belt failures. It's not known what exactly causes the serpentine belt to split, but once it does, the pieces hanging off of the belt wrap around and behind the damper. This leads to the belt breaking up into smaller pieces and eventually getting pushed between the crank hub and rear main seal into the oil pan. These small pieces of debris get caught in and block the oil pickup, preventing oil flow and leading to engine failure. To prevent this, multiple aftermarket companies came up with their own versions of Crank Seal Plates. This plate is installed behind the front damper, blocking the opening that allows the serpentine belt to pass between the crank hub and seal, keeping debris out of your oil pan! Also included in this kit are the components to service your front Oil Cooler/Filter Housing gaskets, refresh your drive belt system, and install the aftermarket upgrades. Kit Features and Contents: Vargas Turbo Crank Bolt Capture Vargas Turbo Crank Seal Plate OEM Accessory Belt OEM Belt Tensioner & Idler Pullies Liqui-Moly Longtime High Tech Engine Oil (5w-30) - 7 Liters OEM Hengst Oil Filter OEM Oil Filter/Cooler Housing Gaskets TMS Oil Change Sticker Genuine BMW Full-Strength Coolant - 1 Liter

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A/C Tensioner Pulley

2X Entries Into Our F80 M3 Sweepstakes

T#:373241

Part#: 11282245087

In Stock

$ 26.99

This product was last offered at the strikethrough price on
09-29-2026

$ 22.99 USD

Limited Qty Sale

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$ 26.99

This product was last offered at the strikethrough price on
09-29-2026

$ 22.99 USD

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The A/C drive belt is tightened buy a separate belt tension.

Accessory Belt Service Kit w/ Kevlar Reinforced Belt - BMW E60 N54 3....

10X Entries Into Our F80 M3 Sweepstakes

T#:22163416

Part#: 4485241TKT

Ships on Nov 12, 2026

Sale - Save 23% $ 177.99

This product was last offered at the strikethrough price on
05-03-2026

$ 136.47 USD

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Qty

Sale - Save 23%

$ 177.99

This product was last offered at the strikethrough price on
05-03-2026

$ 136.47 USD

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Eliminate your squeaking accessory belt pulley and cracked drive belt with this upgraded accessory belt service kit! This kit includes the ECS Kevlar Reinforced Drive Belt, belt tensioner, and idler pullies. ECS Tuning's Red Kevlar Accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM-style belts. Refreshing the rollers and/or tensioners simultaneously is a great way to ensure all vital components of your drive belt system are functioning optimally for years to come!

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URO Belt Tensioner Assembly - E60, E61, E70, E82, E88, E90, E91, E92,...

2X Entries Into Our F80 M3 Sweepstakes

T#:591618

Part#: 11287530314

Ships in 1 Business Day

$ 48.99 USD

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$ 48.99 USD

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Complete tensioner assembly

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