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

Liqui Moly is an official sponsor of Turner Motorsport. We work closely with Liqui Moly to ensure your BMW is receiving optimal lubrication!   Select your vehicle to make sure you are viewing the best Liqui Moly options for your application. 

Includes:

7 Liters of Liqui Moly MolyGen 5w-40 Engine Oil
Liqui Moly UV Flashlight
Hengst Oil Filter Kit
Febi Oil Drain Plug & Washer

Liqui Moly Molygen New Generation fully synthetic engine oil is carefully engineered, starting with a high quality synthetic base. What separates Molygen from other engine oils is the molecular friction modifier for reduced friction and wear. Because of this, Molygen glows fluorescent green under UV light, allowing you to easily find any leaks!

The fluorescent green chemical friction modifier smooths out hard metal surfaces, reducing overall engine wear and heat due to friction. Tests have shown to reduce the friction coefficient by 15%!  MolyGen oil is also a great choice for modern forced induction engines which produce much more heat. BMWs are notorious for leaking oil. Make chasing your leak easier with Liqui Moly Molygen New Generation engine oil. (Once you find it, give us a call - we can help you stop that leak, too!)

Properties:

• Smooth engine running characteristics
• Long engine service life due to exceptional protection against wear
• Rapid oil delivery at low temperatures
• Optimum oil pressure at all engine speeds
• Premium lubrication reliability at high and low temperatures
• High shear and ageing stability
• Reduces fuel consumption and pollutant emissions
• Outstanding engine cleanliness
• Tested with catalytic converters and performance proven with turbochargers
• Miscible and compatible with commercially-available engine oils

Approved for the following specifications:

• ACEA C3
• API SN / CF
• VAG 502.00 / 505.00
• BMW Longlife-01

Liqui-Moly is a German chemical company that offers top of the line engine oils, additives, and car care products that are designed to extend the life of your engine and ensure the best lubrication and cleanliness off engine and transmission components possible. With more than 50 years of experience and reviews across the world from magazines and race teams, Liqui-Moly proves time and time again why they are one of the most innovative lead forces of performance automotive chemicals in the world.

Every 60-80,000 miles, we recommend replacing your spark plugs 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, have put together our High-Performance Ignition Service Kits. These kits include new Bav Auto High-Performance Ignition Coils, new spark plugs, dielectric grease, and a BMW spark plug service label to keep track of when your spark plugs were replaced.

Bav Auto's Ignition coils feature core windings that have been modified to increase firepower and promote a faster, more efficient burn. This gives your BMW/MINI increased torque in the lower range of RPM and more horsepower in the upper range. Exact improvements depend on the current condition of your engine, but you'll definitely feel the difference. They'll also improve your fuel economy.

From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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!

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. 

Includes

• Shim set 
• Installation tool #83300493743
• 16 Blade Feeler gauge set 

BMW recommends S54 valve inspection and adjustment every 30k miles.

*Click here for valve adjustment instructions*

Liqui Moly is an official sponsor of Turner Motorsport. We work closely with Liqui Moly to ensure your BMW is receiving optimal lubrication!   Select your vehicle to make sure you are viewing the best Liqui Moly options for your application. 

Includes:

• 7 Liters of Liqui Moly Longtime High Tech 5w-30 Engine Oil 
• Oil Filter Kit
• Drain Plug with Crush Washer

Longtime High Tech engine oil is designed to provide the highest amount of engine protection as well as fuel savings and reduced oil consumption possible. Using proprietary blends of base oils and the latest additive technology, this oil will ensure smooth running gasoline and diesel engines in both high and low temperatures. Other amazing benefits include: optimum oil pressure at all speeds, rapid oil delivery at low oil temperatures, high shear and aging stability, turbo and multi-valve compatibility, and long service life.

Properties:

• Smooth engine running characteristics
• Long engine service life due to exceptional protection against wear
• Rapid oil delivery at low temperatures
• Optimum oil pressure at all engine speeds
• Premium lubrication reliability at high and low temperatures
• High shear and ageing stability
• Reduces fuel consumption and pollutant emissions
• Outstanding engine cleanliness
• Tested with catalytic converters and performance proven with turbochargers
• Miscible and compatible with commercially-available engine oils

Approved for the following specifications:

• ACEA C3
• API SN / CF
• BMW Longlife-04
• MB-Approval 229.51
• VAG 502.00 / 505.00

Recommended for the following specifications:

• ACEA A3 / B4
• MB 229.31
• VAG 505.01

Liqui-Moly is a German chemical company that offers top of the line engine oils, additives, and car care products that are designed to extend the life of your engine and ensure the best lubrication and cleanliness off engine and transmission components possible. With more than 50 years of experience and reviews across the world from magazines and race teams, Liqui-Moly proves time and time again why they are one of the most innovative lead forces of performance automotive chemicals in the world.

When your CPV O-ring fails it causes a slow oil leak on the passenger side of the engine, making an oily mess that frequently resembles a rear main seal leak. Replacing the CPV with an upgraded o-ring ensures a long-term solution to this common problem. 

The factory o-ring over time fails from heat cycling and oil exposure due to the Buna rubber used in OEM o-rings, while the included Viton Fluoroelastomer is resistant to a much higher temperature to ensure prolonged life without leaking. 

This is an OEM INA�mechanical tensioner for the serpentine belt. This tensioner keeps the belt for the alternator, power steering and Air Conditioning taught to provide maximum performance of each system.

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!

This is an OEM INA AC Belt Tensioner with pulley for all 2001-2006 E46 M3, as well as all 1999-2002 non-M E46 3 series models. These belt tensioner units are known to fail, and include the tensioner pulley (as shown).

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!

This Air Conditioning / AC Belt Tensioner with Pulley fits:
1999-2000 E46 3 Series 323i, 323Ci, 328i, 328Ci
2001-2002 E46 3 Series 325i, 325Ci, 330i, 330Ci
2001-2006 E46 M3 coupe & convertible

• 11127582245 - N52 valve cover gasket set
• 11127552280 - N52 eccentric shaft sensor seal
• 11127559699 - N52 Valvetronic gasket

Morimoto sets the standard for aftermarket HID bulbs with their exceptional XB lineup. These D2S bulbs offer outstanding performance, making them a top choice for BMW enthusiasts. Whether you opt for 35W or 55W, the Morimoto XB bulbs shine brighter, last longer, project further, and enhance your vehicle's appearance.

The heart of these XB D2S bulbs lies in their flawless alignment, featuring 100% Philips quartz glass housing with a capsule sourced from APL-USA. Utilizing high-quality halide salts from German supplier Messer, these bulbs achieve nearly the same luminosity (intensity) as the renowned Osram CBI bulbs at 5500K. That's right, you'll experience exceptional visibility at night. In comparison tests with leading brands, Morimoto's XB capsules prove to be among the best.

Expect longevity with Morimoto's XB bulbs, thanks to Austrian-sourced Plansee electrodes. After 200 hours of use, the Morimoto bulb maintains an impressive 83% intensity, just slightly behind the Philips bulb, which retains 86%. This level of durability is unmatched in the aftermarket.

Precise alignment is key to Morimoto's Symmetry-Structure frame, ensuring the bulbs produce consistently bright and uniform output throughout their lifespan.

Compliance with industry-standard specifications and adherence to SAE, DOT, and ECE requirements make Morimoto's XB replacement HID bulbs ideal for any BMW. They have undergone rigorous testing with ballasts from Morimoto, Denso, Hella, Bosch, and Koito and have passed with flying colors.