BMW Engine Parts for BMW 3 Series E46 (1999-2005)

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Turner Motorsport has everything you need to upgrade your BMW through our stages of performance or to keep your car in peak condition with our range of the latest in proven OEM cooling parts. Upgrade your cooling system and engine performance with the selections below to give your BMW a performance and reliability advantage.

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OEM Rear Main/Crankshaft Seal Kit E28, E30, E34, E36, E39, Z4 ...
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Packaged by Turner - Corporate Logo
T#:42099850
Part#: 11142247867TKT
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$ 42.88 USD
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Protect your BMW engine and drivetrain with the OE Rear Main/Crankshaft Seal Kit, a critical upgrade for leak-free performance and longevity.
Ina - Corporate Logo
T#:2045
Part#: 11281748131
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$ 20.25 USD
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$ 20.25 USD
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This is an OEM INA tensioner pulley, also known as the adjusting pulley and lower pulley. This pulley is mounted on the belt tensioner near the center of the belt assembly. The upper and lower pulleys are known to be the primary sources for 'belt squealing'. This pulley is also encased in rubber which will crack over time. If left without service the rubber could fail completely, chucking the belt and leaving you stranded. Replacement is a very simple procedure and can be done anytime the fan is off the engine (belt replacement, water pump service, alternator replacement, etc).

This pulley is mounted along with the hydraulic belt tensioner but can be replaced on its own. It is used for the main drive belt on the M50-M54 family engines (M50, M50TU, M52, S52, M52TU, M54, M56, and S54 engines). This is the same belt that covers the water pump/alternator/power steering systems. Replacement is a very easy procedure (requires fan removal) and will have your engine purring in no time. Belt replacement is strongly recommended at the same time. If you have a mechanical belt tensioner, the pulley can only be replaced with a new tensioner.

OEM Schaeffler (INA, LuK, & FAG) is an engineering company that focuses on high-performance, precision manufacturing. With their individual brands INA, Luk, and FAG providing exceptionally high quality parts directly to BMW, as well as countless other automotive companies, their history of reliability and variety of offered parts makes Schaeffler a go-to replacement parts provider for all of us here at Turner Motorsport.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

If you need the hydraulic belt tensioner, click here.

This item is 70mm Diameter. Please check the diameter before ordering.

This tensioner pulley fits the following BMWs:
1991-1995 E34 525i (M50 engine)
1992-1999 E36 325i, 325is, 328i, 328is, 323is
1995-1999 E36 M3 (M3 3.0 & M3 3.2 liter)
1997-2003 E39 525i, 528i, 530i - Only for Hydraulic Tensioner
1999-2000 E46 323i, 323Ci, 328i, 328Ci - Only for Hydraulic Tensioner
2001-2005 E46 325i, 325Ci, 325xi, 330i, 330Ci, 330xi - Only for Hydraulic Tensioner
2001-2006 E46 M3 coupe & convertible - Only for Hydraulic Tensioner
2000-2006 X5 3.0 liter (E53 chassis)
2004 E60 525i, 530i (M54 engine)
1997-2002 Z3 & MZ3 2.5, 2.8, 3.0, M Roadster, M Coupe
2003-2009 Z4 M Coupe and Roadster

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Bav Auto Spark Plug Socket 12" x 5/8"
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Bav Auto Tools - Corporate Logo
T#:580385
Part#: B8800072
In Stock
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$ 27.29 USD
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Magnetic insert holds the spark plug securely in place for easy installation. Works great on many twin can engines where the spark plugs are recessed deep in the cylinder head.

Mahle - Corporate Logo
T#:598529
Part#: 11251437077
In Stock
$ 38.99

This product was last offered at the strikethrough price on
10-27-2026

$ 34.99 USD
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$ 34.99 USD
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Ensure optimal engine performance in your BMW M50 M52 Engines with Turner Motorsport's Mahle Piston Ring Set. Over time, worn piston rings can lead to power loss, increased oil consumption, and white smoke from the tailpipe. When rebuilding your BMW's engine, replacing the piston rings is essential for restoring power and efficiency. Each set is priced individually, with six sets required for complete engine overhaul.

Key Benefits:

  • Restores engine power and efficiency
  • Reduces oil consumption
  • Prevents white smoke from the tailpipe
  • Compatible with M50 M52 Engines
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URO Ignition Coil - E31, E36, E38, E39, E46, E52, E53, Z3
For vehicles with production date up to 09/2002
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URO - Corporate Logo
T#:361999
Part#: 12137599219
In Stock
$ 36.99

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$ 33.99 USD
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$ 36.99

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$ 33.99 USD
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Ignition coil for a quality OE replacement
N-Series Ultimate Performance Ignition Coil - Red - Set Of Six ...
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Packaged by Turner - Corporate Logo
T#:23714967
Part#: NSERIESIGNCOILKT
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$ 205.99 USD
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Upgrade your BMW's engine performance with the Dinan Performance Ignition Coil Service Kit. These high-quality ignition coils are crafted to enhance ignition power, ensuring optimal engine performance and efficiency. Engineered for durability and reliability, these coils provide improved throttle response, smoother idle, and enhanced fuel efficiency. Benefit from the Dinan Performance Ignition Coil Service Kit, designed to unleash the true potential of your BMW's engine.
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Bav Auto Fuel Level Sensor & Fuel Pump Lock Ring Tool - BMW & MINI ...
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Bav Auto Tools - Corporate Logo
T#:580400
Part#: B8800089
In Stock
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$ 67.49 USD
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Used to remove fuel level and fuel pump lock rings properly to avoid damage.
Ina - Corporate Logo
T#:403662
Part#: 11311738700
In Stock
$ 56.20

This product was last offered at the strikethrough price on
07-23-2026

$ 47.99 USD
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$ 47.99 USD
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Guide used to tension the timing chain

Bav Auto Timing Chain Tensioner Tool
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Bav Auto Tools - Corporate Logo
T#:580357
Part#: B8800030
In Stock
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$ 30.79 USD
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Vital when servicing the timing system.

URO Crankshaft Seal Kit for E39 and E46
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URO - Corporate Logo
T#:38094318
Part#: 11141438274
Ships in 1-3 days
$ 122.02 USD
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Whether addressing a leaking crankshaft seal or performing routine engine maintenance, the URO Crankshaft Seal delivers exceptional sealing performance
Oxygen Sensor - Priced Each
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URO - Corporate Logo
T#:35863157
Part#: 11781742050
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$ 49.99 USD
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This direct fit oxygen sensor plugs directly into your factory connector. It is the pre-cat sensor. No cutting or splicing required. A new oxygen sensor can improve driveability and lengthen engine life. It fits BMW E46 E39 E38 X3 X5 Z3 Z4. Bosch # 13 477.

This item fits the following BMWs:
1999-3/2003 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330xi 330ci
1999-2003 E39 BMW 525i 528i 530i M5
1997-2003 E39 BMW 540i
1995-2001 E38 BMW 750il
2004-2006 E83 BMW X3 2.5i X3 3.0i
2000-2006 E53 BMW X5 3.0i
2000-2003 E53 BMW X5 4.4i 4.6is
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
2003-2005 E85 BMW Z4 2.5i Z4 3.0i
2000-2003 E52 BMW Z8
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Hydraulic Alternator Belt Tensioner Assembly
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URO - Corporate Logo
T#:396757
Part#: 11287838797
In Stock
$ 53.99 USD
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Camshaft Position Sensor - S54, S62
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URO - Corporate Logo
T#:44461483
Part#: 13627796054
In Stock
$ 40.99 USD
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Provides dependable performance, reliability, and value in one essential component.
Mahle - Corporate Logo
T#:403354
Part#: 13327831089
Ships in 1 Business Day
$ 84.05

This product was last offered at the strikethrough price on
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$ 76.26 USD
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$ 76.26 USD
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Ensure optimal fuel delivery for your BMW's engine with the Turner Motorsport Fuel Filter for E46 M3 & Z3 S54 3.2L Engine. Over time, fuel filters can become clogged, hindering the engine's ability to receive sufficient fuel. This can lead to various fuel-related issues such as surging, stalling, cold start problems, and decreased performance. Replacing the fuel filter with a fresh one helps address these issues and ensures smooth engine operation under various conditions.

Benefits:

  • Improves fuel delivery to the engine
  • Addresses fuel-related problems such as surging and stalling
  • Enhances cold start performance
  • Maintains engine performance under various driving conditions
  • Recommended replacement every 60,000 miles, or more frequently in regions with poor fuel quality
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Bav Auto Torx head bolt socket - E12
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Bav Auto Tools - Corporate Logo
T#:580351
Part#: B8800022
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This special long, thin, Torx socket is required for removal and installation of the head bolts on most BMWs with twin-cam cylinder heads. 1/2" drive

URO Aluminum Water Pump Pulley - E39, E46, E53, E60, E83, Z3, Z4 ...
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URO - Corporate Logo
T#:340641
Part#: 11511436590
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$ 45.99 USD
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$ 45.99 USD
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An upgrade over commonly failing plastic pulley

Mahle - Corporate Logo
T#:367343
Part#: 13321740985
Ships in 1 Business Day
$ 46.05

This product was last offered at the strikethrough price on
07-02-2026

$ 35.28 USD
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$ 35.28 USD
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This is an OEM MAHLE fuel filter that removes dirt and other particle contaminants from your fuel.

A clogged fuel filter makes it difficult for your engine to get all the fueling it needs. Filters commonly clog from a deteriorating gas tank, bad fuel, or other debris in the fuel system. A fresh fuel filter addresses many fuel related problems including surging, stalling, cold start issues, and poor performance under a variety of conditions.

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BMW N52 N44 VANOS Oil Feed Line
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URO - Corporate Logo
T#:361997
Part#: 11361705532
Ships in 1-3 days
$ 35.01 USD
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BMW N52 N44 VANOS Oil Feed Line is essential for ensuring reliable oil supply to the VANOS cam unit in your BMW. Manufactured by URO Parts, a leading name in the aftermarket automotive industry, this oil feed line is designed to meet the highest standards of quality and performance. Turner Motorsport offers this direct replacement component, crafted to ISO 9000 certification standards, ensuring long-lasting durability and seamless integration with your BMW's engine. With this high-quality oil feed line, you can maintain optimal engine performance and avoid potential issues related to insufficient oil flow.

  • Ensures reliable oil supply to the VANOS cam unit
  • Manufactured by URO Parts, a trusted name in the industry
  • Direct replacement for seamless installation
  • Meets ISO 9000 certification standards for quality
  • Supports optimal engine performance and longevity
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Borescope Camera with Light For Phone
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Bav Auto Tools - Corporate Logo
T#:32450134
Part#: PHONEBORESCOPE
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The Borescope Inspection Camera offers 1920P HD resolution, a flexible 7.9mm probe, and a 16.4ft semi-rigid cable, making it ideal for inspecting hard-to-reach areas. Easily connect to IOS and Android devices, and use the IP67 waterproof probe for various applications, including automotive, plumbing, and home inspections.


Key Features:

  • 1920P HD Resolution: Capture clear images and high-quality video at 1920x1440 resolution.
  • Easy Connection: Connect quickly to IOS 9.0+ and Android 7+ devices via the 'SUP-ANESOK' app.
  • Semi-Rigid Cable: 16.4ft cable offers a mix of flexibility and rigidity for precise inspections.
  • Waterproof Probe: IP67-rated, capable of operating underwater up to 3.28 feet for 1 hour.
  • Wide Applications: Suitable for automotive, plumbing, and home inspections, with adjustable brightness for low-light environments.


Includes:

  • Borescope Camera
  • Android Adapter
  • Lightning Port Adapter
  • USB Type-C Connector
  • 16.4 ft. Semi-Rigid Cable
  • Magnet
  • Hook
  • Mirror
  • Protective Cap
  • Manual


WARNING: This product contains chemicals known to the state of California to cause cancer, birth defects, and/or reproductive harm. See above warning label as well as http://www.p65warnings.ca.gov for further information on Proposition 65 warnings.

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Ina - Corporate Logo
T#:42301978
Part#: ZC0286
In Stock
$ 26.99 USD
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Turner Motorsport offers this genuine OEM INA Engine Timing Chain (Upper) as a reliable solution to maintain BMW engine integrity and performance, ensuring your vehicle runs like new.

WPC Performance Rod Bearing Replacement Kit - Late S54
For Vehicles Produced After 02/2003
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Packaged by Turner - Corporate Logo
T#:15710784
Part#: 11137834886-KT
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The S54 engine has a known history of rod bearing failure, and if your engine is higher mileage, don't let this catastrophic failure happen to you. Replace your rod bearings and prevent a spun bearing which can trash your crankshaft. WPC is a surface treatment that reduces friction and adds strength - two improvements that benefit internal engine components. Ultra-fine particles are fired at the surface at very high speeds, like shot-peening - but much, much smaller. The parts come out smoother and stronger due to thermal discharge. The two largest enemies of any high-performance engine are heat and friction - and WPC has found a way to reduce both. Kit includes Upper and lower WPC treated rod bearings for extra protection against wear Hardware Oil filter Castrol TWS Edge Professional Oil pan gasket Oil pan cover gasket RedLine assembly lube Connecting rod bolts
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Bavarian Autosport Crankshaft Holding Tool - BMW
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Bav Auto Tools - Corporate Logo
T#:580450
Part#: B8800145
In Stock
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Makes removal of crankshaft hub nut/bolt much easier. A must-have for replacing timing chains, oil pump chains, leaking crankshaft seals and more.
Fuel Tank Breather Valve
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URO - Corporate Logo
T#:591935
Part#: 13901433603
Ships in 1 Business Day
$ 49.99 USD
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Valve between charcoal canister and throttle body
Valve Cover Seal, Washer & Grommet Set - for S54
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Packaged by Turner - Corporate Logo
T#:211239
Part#: 11127830972-395
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Valve Cover Seal Washer. Seals the valve cover bolt to the cam cover. Not required when changing valve cover gasket but good to have as spares. They often get hard and shrink over time, leading to an oil leak or vacuum leak. We sell this as a complete set of 15 grommets with both part numbers included (11127830972 and 11121437395). Individual seals available separately (see below).

This item fits the following BMWs:
2001-2006 E46 BMW M3
2001-2002 Z3 BMW Z3 M Roadster M Coupe
2006-2008 E85 BMW Z4 M Roadster M Coupe
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Engine Oil Separator Package - Level 2 - E46 325, E39 525i M54 ...
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Packaged by Turner - Corporate Logo
T#:24344785
Part#: M54OILSEPKT
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If you need to perform a complete oil separator system service, this Level 2 kit provides you with all of the main components necessary to service your engine oil separator system. This Level 2 kit includes the following: Oil Separator Hose from oil separator to dipstick tube Hose from oil separator to valve cover Hose from intake manifold back to the connector hose Hose from oil separator up to the intake manifold Throttle body gasket Throttle body inlet boot ICV rubber grommet Oil dipstick tube o-ring seal It is highly recommended to replace the oil dipstick tube with the updated design by BMW as this also a common place for sludge to build up.
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High-Performance Ignition Service Kit - BMW M54 M52 M52TU
For vehicles with production date up to 09/2002
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Packaged by Turner - Corporate Logo
T#:25739342
Part#: 7599219TMS1KT
In Stock
Sale - Save 20% $ 291.99

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Every 60-80,000 miles, we recommend replacing your spark plugs and coils to ensure your ignition system is running optimally. Over time carbon can build up around the head of the spark plug and decrease spark strength and effectiveness, leading to weaker fuel mixture detonation, misfires, and potential check engine lights. To prevent this, we have put together our High-Performance Ignition Service Kits, now featuring our very own Turner Performance Ignition Coils! These kits include our new Turner Performance Ignition Coils, new OEM Bosch Platinum+4 spark plugs, and AGS dielectric grease. The new Turner Performance Ignition Coils are designed with performance and efficiency in mind. An engine needs 3 main components to run (Air, Fuel, and Spark.) Ignition coils are responsible for 1/3 of the operation of your engine and it would be smart to weigh the options when shopping. Turner ignition coils are modified to increase energy output; more energy output results in a faster, more efficient, and consistent burn to make sure your fuel is being utilized to its maximum potential. These coils offered by Turner feature a blue housing that gives your engine the performance and aesthetic you're looking for. Features and Benefits: Increased Performance Direct Fitment Signature Turner Blue finish High Quality Bosch Platinum+4 Replacement Spark Plugs Premium AGS Dielectric Grease Included
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URO Oil Filler Cap
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URO - Corporate Logo
T#:6795781
Part#: 11127832157
Ships in 1 Business Day
$ 35.99 USD
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Replace your damaged or missing oil cap. Great quality replacement that is manufactured to original equipment dimensions and guaranteed to fit. Stop leaking from damaged oil cap or seal.

URO Parts Engine Crankshaft Position Center - 12141709616 - E36, E46,...
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URO - Corporate Logo
T#:52621857
Part#: 12141709616
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$ 25.99 USD
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The URO Parts 020655 Crankshaft Position Sensor offers a cost-effective alternative to expensive OE components without sacrificing quality or longevity.

Water Pump Pulley
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URO - Corporate Logo
T#:638798
Part#: 11517840403
Ships in 1 Business Day
$ 57.99 USD
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Oil Filter Housing Cap
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URO - Corporate Logo
T#:12151731
Part#: 11421744000
In Stock
$ 28.99 USD
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Over time has the cap for your oil filter housing become harder to remove? Using the wrong tool can round the nut cast into the top of the cap, making removal harder each time. This oil filter housing fits cars with the M52, M54, or M56 engines. If you are looking for a more durable, easier-to-remove replacement, Turner Motorsport trusts ECS Tuning's Billet Aluminum Oil Filter Housing Caps
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Valve Cover Gasket Set
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Packaged by Turner - Corporate Logo
T#:15744013
Part#: 11127831271-KT
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$ 100.03 USD
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When these gaskets leak you'll start to smell oil burning when the engine is hot. Also everything downward from the top of the engine becomes coated in a greasy film. The valve cover gasket keeps all of the motor oil inside your engine. Your valve train and lifters get soaked with oil to keep everything lubricated. If the valve cover fails, engine oil seeps and leaks out, running down and burning on the block or cylinder head. Replace it and keep your engine compartment clean and tidy with all the engine oil in the motor. If you are removing your S54 valve cover for valve adjustment, inspection or repairs, you can now get all the gaskets you need in one box. Included are Valve cover gasket Spark plug seals Nut seals Grommets Copper sealing washers
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VANOS Exhaust Hub Upgrade Kit - E46 M3, Z3 M, Z4 M (S54)
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Packaged by Turner - Corporate Logo
T#:53608869
Part#: 11367832031KT3
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This product was last offered at the strikethrough price on
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The factory VANOS exhaust hub on the S54 engine is known to develop excessive play where the drive tabs interface with the oil pump disk. Over time, this imprecise fitment causes a back-and-forth rattling motion that can result in the tabs shearing off inside the engine, risking catastrophic damage or complete engine failure. Unlike other aftermarket solutions that require full VANOS disassembly, retiming, or replacement of the oil pump disk, the Turner Motorsport S54 VANOS Hub Upgrade offers a smarter approach. Our bolt-on fix eliminates the common failure point without opening the VANOS unit or disturbing engine timing.

Our solution involves removing the worn tabs from your stock exhaust hub and installing our precision-fit replacement, which is precision-machined from 4340 steel and hardened to meet OEM specifications. Designed using 3D scanning and CAD modeling, the Turner Motorsport VANOS Exhaust Hub Upgrade provides a tight, interference-free fit into the oil pump disc, completely resolving the issue without unnecessary labor.

Features & Benefits:

Direct bolt-on solution for S54 VANOS oil pump drive tab failure, preventing potentially catastrophic damage to engine internals Precision-machined from high-strength 4340 steel and heat-treated to match OEM specifications Designed using 3D scanning and CAD modeling to ensure precise fitment within the OEM oil pump disc Engineered to eliminate the play that exists between the exhaust hub and oil pump disc from factory Backed by extensive real-world testing and our lifetime replacement program! Kit Contents:

Turner Motorsport Exhaust VANOS Hub Upgrade 4x Extended Length Hex Head Bolts (M6x30 Gr. 10.9) 8x OEM BMW VANOS Hub Hex Head Bolts (M6x25) 12x Fillister Head Torx Screw (M6x16) OEM Valve Cover Gasket OEM VANOS to Cylinder Head Gasket

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S54 Valve Adjustment Kit
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Packaged by Turner - Corporate Logo
T#:15744038
Part#: 833004937430-KT
In Stock
Sale - Save 20% $ 124.30

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11-07-2026

$ 99.44 USD
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Proper valve lash adjustment is critical for longevity and performance. If your S54 is due for valve adjustment maintenance you can do it yourself with this kit, saving hundreds of dollars in labor charges. Use the proper tools! Includes Wiseco Valve Shim set Schwaben Installation tool #83300493743 BMW recommends S54 valve inspection and adjustment every 30k miles.
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S54 Turner Motorsport Ultimate Power Pulley And Drive Belt Overhaul S...
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Packaged by Turner - Corporate Logo
T#:15710772
Part#: 11281730349-KT
Ships on Jan 11, 2027
Sale - Save 10% $ 509.99

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$ 458.99 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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OEM INA AC Belt Tensioner with Pulley - E46 E39 E60 X3 X5 with M54 en...
For vehicles with production date from 09/2002
We Price Match - Give Us A Call or Chat!
Ina - Corporate Logo
T#:11808
Part#: 11287512758
In Stock
$ 56.99 USD
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$ 56.99 USD
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This is an OEM INA mechanical tensioner for 2003+ BMW's with the M54 or M56 engine. These belt tensioner units are known to fail, and include the tensioner pulley (as shown). OEM Schaeffler (INA, LuK, Ruville, & FAG) is an engineering company that focuses on high-performance, precision manufacturing. With their individual brands INA, Luk, and FAG providing exceptionally high-quality parts directly to BMW, as well as countless other automotive companies, their history of reliability and variety of offered parts makes Schaeffler a go-to replacement parts provider for all of us here at Turner Motorsport. As a leading source of high-performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts. All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!
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VANOS Rebuild Kit & Exhaust Hub Upgrade - E46 M3, Z3 M, Z4 M (S54) ...
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Packaged by Turner - Corporate Logo
T#:53608871
Part#: 11367832031KT5
Ships on Jan 11, 2027
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This product was last offered at the strikethrough price on
05-30-2026

$ 485.87 USD
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Take the guesswork out of S54 ownership. This all-inclusive kit targets the two most notorious failure points on the BMW S54 engine: broken exhaust hub tabs and degraded internal seals.

Turner Motorsport S54 VANOS Exhaust Hub Upgrade

The factory S54 exhaust hub is a ticking time bomb. Excessive play between the drive tabs and the oil pump disk creates a rhythmic rattling that eventually shears the tabs off, risking catastrophic engine failure.

While other kits require deep-engine surgery, our Turner Motorsport Hub Upgrade offers a "work smarter" approach.

Precision Engineering: Developed using 3D scanning and CAD modeling for a perfect, interference-free fit.

Superior Materials: Machined from high-strength 4340 steel and hardened to OEM specifications.

No Re-Timing Required: This bolt-on fix eliminates the failure point without the need to disassemble the VANOS unit or disturb engine timing, saving hours of labor.

ECS Tuning VANOS Seal Kit

The original BMW seals are made of Buna-N rubber, which quickly hardens and loses its sealing properties when exposed to synthetic oil and high heat. Our ECS engineering team has corrected this flaw.

Viton™ Upgrade: We utilize high-performance Viton O-rings for the internal seals, seal plate, and solenoid.

Chemical Resistance: These seals are designed to remain pliable and effective for the life of the engine, restoring lost low-end torque and smoothness.

ECS Tuning Rattle Repair Kit

Eliminate the dreaded "marbles in a can" sound. This kit addresses the axial play in the VANOS helical gears.

Hardened Steel: Our rings and washers are precision-ground to resist the wear and deformation that lead to engine rattle.

Silent Operation: Restores the refined sound and feel of your S54 across the entire RPM range.

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URO Multi Purpose Relay - 61368384505
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URO - Corporate Logo
T#:37858387
Part#: 61368384505
Ships in 1 Business Day
$ 34.99 USD
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URO Multi Purpose Relay - 61368384505

URO Multi Purpose Relay - 61368384505 is the perfect replacement for a failed relay, restoring the proper electrical circuit performance in BMW vehicles. Designed as a direct-fit OE reproduction, this relay ensures a seamless plug-and-play installation, ensuring optimal function and reliability.

  • Replaces failed relays to restore proper electrical circuit operation
  • Direct-fit OE reproduction design for easy installation and compatibility
  • Manufactured using high-quality materials to resist heat, cold, and condensation
  • Modern electronics protect against electrical arcing and burnout for long-term durability
  • Factory tested to ensure proper performance and functionality
  • Backed by a 24-month unlimited mileage warranty

The URO Multi Purpose Relay is an essential component for maintaining the smooth electrical performance of BMW vehicles, ensuring long-lasting reliability and performance.

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OEM Ignition Service Kit - BMW M54 2.5L 3.0L
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Packaged by Turner - Corporate Logo
T#:30497158
Part#: 12131712219OEMKT
In Stock
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10-22-2026

$ 241.88 USD
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Often an oversight in maintenance, ignition components are also susceptible to wear and tear. Spark Plugs can accumulate carbon, reducing the spark intensity and it's ability to properly ignite the air/fuel mixture, leading to misfires and generally declining performance. Other ignition components, such as coils, boots, wires, caps, and rotors, can also wear out over time due to factors like heat and contamination, preventing the current from reaching the spark plug. To start over fresh with all new components, we now offer these Ignition Service Kits. Each kit comes with brand new OEM quality components, replacing any potential fault points in your ignition system for peak performance!
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WPC Performance Rod Bearing Replacement Kit - Late S54 - DRY ...
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Packaged by Turner - Corporate Logo
T#:36811826
Part#: 11137834886JRKT
In Stock
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This product was last offered at the strikethrough price on
11-07-2026

$ 666.79 USD
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E46 / E53 / E39 / E83 M54 Performance Ignition Service Kit
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Packaged by Turner - Corporate Logo
T#:22130469
Part#: M54PERFINGSRVKT
In Stock
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$ 166.86 USD
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This BMW Ignition coil is engineered with core windings optimized to enhance firepower and facilitate a faster, more efficient combustion process. This results in increased torque in the lower RPM range and enhanced horsepower in the upper range. The extent of these improvements will vary depending on your BMW engine's current condition, but you'll undoubtedly notice the difference. Additionally, it contributes to improved fuel economy. Ensure your engine runs smoothly and operates at its peak with an ignition service kit from Turner Motorsport. This comprehensive kit comprises 4 Bosch ignition coils with plug boots, Bosch spark plugs, and a packet of American Grease Stick dielectric grease. As an assurance of quality, all Bavarian Autosport brand parts are backed by a 2-year warranty.
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NOCO - Corporate Logo
T#:1135807
Part#: GENIUS1
In Stock
25% off MSRP $ 39.95

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 29.94 USD
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25% off MSRP
$ 39.95

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 29.94 USD
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The cutting-edge GENIUS1 is a powerhouse among our chargers renowned for its exceptional performance, energy efficiency, and compact design. The GENIUS1 is a versatile 6-volt and 12-volt charger, maintainer, and desulfator with a 1-amp rating. It's engineered to work with lead-acid batteries in automotive, marine, and deep-cycle applications, supporting flooded, gel, AGM, maintenance-free types, and even lithium-ion batteries.


Features: 

  • Do more with Genius - Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.
  • Enjoy precision charging - An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
  • Charge dead batteries - Charges dead batteries as low as 1-volt. Or use the all-new Force Mode that allows you to take control and manually begin charging dead batteries down to zero volts.
  • Simple to set up and use - Plug-in, connect to the battery, select a charge mode, and start charging your battery. A fully-automatic, worry-free battery charger for year-round use.
  • Restore your battery - Detects sulfation and acid stratification and restores lost performance for stronger engine starts and extended battery life.
  • Compatible with all types of vehicles - Charge and maintain cars, motorcycles, lawnmowers, ATVs, tractors, trucks, SUVs, boats, classic cars, hot rods, and more - you name it.


WARNING: This product contains chemicals known to the state of California to cause cancer, birth defects, and/or reproductive harm. See above warning label as well as http://www.p65warnings.ca.gov for further information on Proposition 65 warnings.

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Mechanical Alternator Belt Tensioner Assembly
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URO - Corporate Logo
T#:371980
Part#: 11281427252
Ships in 1 Business Day
$ 50.99 USD
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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.

Ina - Corporate Logo
T#:42301980
Part#: ZC0255
Ships in 2 Business Days
$ 41.99 USD
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Preserve the performance and longevity of your BMW with the OEM INA Engine Timing Chain. Timing chains stretch over time causing sluggish performance, a check engine light or even a misfire. Replace yours today!
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Leak Detection Pump
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URO - Corporate Logo
T#:15445597
Part#: 16136756440
In Stock
$ 153.99 USD
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Leak detection pump tests fuel containment system for vapor leaks to atmosphere. Failed pump often turns on check engine light.

Cap Nut M6 - 11121738608 - E34,E36,E39,E46,E53,E83,E85
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URO - Corporate Logo
T#:24145945
Part#: 11121738608
In Stock
$ 20.99 USD
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Cap Nut - M6
This item fits the following BMW Chassis:
E36 M3,E34,E36,E39,E46,E53 X5 X5,E83 X3,E85 Z4

Fits BMW Engines including:
M50,M52,M54,M56,S50,S52

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URO Engine Timing Chain Tensioner - BMW M50 M52 M54 S50 S52
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URO - Corporate Logo
T#:43750203
Part#: 11311738700
In Stock
$ 40.95 USD
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Ensure your timing chain is properly tensioned with a brand new tensioner from URO
Mechanical A/C Belt Tensioner Assembly
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URO - Corporate Logo
T#:384308
Part#: 11287512758
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$ 43.99 USD
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Complete tensioner assembly with roller
Belt Tensioner Conversion Kit
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URO - Corporate Logo
T#:600039
Part#: 11287838797K
Back Ordered
$ 82.99 USD
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Update from a mechanical tensioner to a hydraulic style tensioner


Hydraulic Alternator Belt Tensioner Conversion Kit
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Packaged by Turner - Corporate Logo
T#:15710833
Part#: 11287838797-KT
Ships in 1-2 days
Sale - Save 32% $ 163.99

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10-12-2026

$ 111.09 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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Suction Pump
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URO - Corporate Logo
T#:377591
Part#: 11617545382
In Stock
$ 59.62

This product was last offered at the strikethrough price on
11-07-2026

$ 53.99 USD
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$ 59.62

This product was last offered at the strikethrough price on
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$ 53.99 USD
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A common source for vacuum leaks