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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
This product was last offered at the strikethrough price on
08-20-2026
Introducing the BMW Timing Chain Tensioner Replacement by Turner Motorsport, a vital component to maintain optimal tension and prevent timing chain issues. Engineered for reliability, this replacement ensures the proper functioning of your cam gears and crank, preventing potential engine damage.
Replace your BMW's timing chain tensioner with this Turner Motorsport solution to keep your engine running smoothly.
Spark Plug Gapper Tool BMS Billet is essential for accurately adjusting the gap of spark plugs. This precision tool ensures that each plug is set to the exact specifications required for optimal engine performance. Made in the USA, it features a 12mm plug thread size, making it suitable for a wide range of applications.
Upgrade your spark plug maintenance with the Spark Plug Gapper Tool BMS Billet for a reliable and precise solution.
This tensioner is for either the Water Pump or Alternator on cars with the mechanical belt tensioner system. Please check to ensure your car does not have the hydraulic tensioner. This tensioner comes with the pulley assembly.
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!
Only for cars with Mechanical belt tensioner systems.
This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
1991-1995 E34 BMW 525i
1997-2003 E39 BMW 525i 528i 530i
2004-2005 E60 BMW 525i 530i
2004-2006 E83 BMW X3 2.5i X3 3.0i
2000-2006 E53 BMW X5 3.0i
1997-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
2003-2005 Z4 BMW Z4 2.5i Z4 3.0i
This product was last offered at the strikethrough price on
07-23-2026
This product was last offered at the strikethrough price on
10-02-2026
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
This product was last offered at the strikethrough price on
08-26-2026
This product was last offered at the strikethrough price on
08-24-2026
This product was last offered at the strikethrough price on
11-07-2026
This product was last offered at the strikethrough price on
11-07-2026
This product was last offered at the strikethrough price on
07-29-2026
For Alternator / Water Pump Belt
Hydraulic Belt Tensioner for E36, E46, E39 6-cyl models. This is the oil-filled tensioner that keeps the main drive belt in the proper tension. Over time the piston seals inside allow fluid to leak out. The tensioner 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.
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!
NOTE: These BMW's may have been equipped with either a mechanical or hydraulic tensioner. Only for cars with Hydraulic Belt Tensioners. Please check 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
1999-2000 E46 323i, 323Ci, 328i, 328Ci
2001-2005 E46 325i, 325Ci, 325xi, 330i, 330Ci, 330xi
2001-2006 E46 M3 coupe & convertible
2000-2006 X5 3.0 liter (E53 chassis)
2006 525i, 530i(M54 engine)
1997-2002 Z3 & MZ3 2.8, M Roadster, M Coupe
2003-2009 Z4 M Coupe and Roadster
This product was last offered at the strikethrough price on
08-26-2026
This product was last offered at the strikethrough price on
08-13-2026
BMS Billet Spark Plug Gapper Tool - 14mm is an essential tool for achieving accurate and consistent spark plug gapping, ideal for automotive enthusiasts and professional mechanics alike. This precision tool helps maintain optimal plug performance by providing reliable, consistent gaps. Available in both 14mm and 12mm plug thread sizes, this tool is proudly made in the USA to deliver durability and precision.
Schrick Technical Information / Specs
Stainless steel filtration is not a new technology but is quickly gaining popularity in the automotive segment. With the ability to filter down as small as a paper filter element with the ability to be washed and reused!
The K&P Engineering filter element is made from medical grade, type 304 stainless steel micronic filter cloth to provide unmatched protection against oil contamination and resultant engine damage. A one inch square of this material flows an incredible 1.9 gallons of oil per minute at only 1 PSI pump pressure. The adhesive used in the filter assembly process is good to 600 degrees Fahrenheit, far above normal engine operating temperatures. A super strength nickel-plated neodymium rare earth magnet is installed in the top of the element for magnetic pre-filtering of the oil. The sophisticated bypass is engineered for proper differential pressures and consistent operation, delivering a greater percentage of filtered oil while being very easy to clean. The twist lock design assures positive filter element placement and allows for easy disassembly, inspection, and cleaning. The quad-ring gasket doubles the seal between the filter and the engine. Finally, the filter housing is carved out of solid 6061T6 billet aluminum, which not only looks trick but aids in dissipating heat.
K&P Engineering manufactures stainless steel filters for a vast array of engines around the world. Staying at the forefront of design and testing allows this company to offer a top-tier product for your European vehicle.
Features:
At regular oil changes, clean to K&P's specifications for continued used - a true lifetime filter.
This product fits the following BMWs:
1995 - 1999 E36 M3
2001 - 2006 E46 M3
1998 - 2002 E36/8 Z3 M Coupe
1998 - 2002 E36/7 Z3 M Roadster
2006 - 2008 E86 Z4 M Coupe
2006 - 2008 E85 Z4 M Roadster
Schrick Technical Information / Specs
Schrick Technical Information / Specs
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This product was last offered at the strikethrough price on
06-17-2026
This product was last offered at the strikethrough price on
08-26-2026
This product was last offered at the strikethrough price on
08-26-2026
This product was last offered at the strikethrough price on
06-18-2026
This top-end gasket set covers the cylinder head on the S54 engine used in the E46 M3, Z3 M Roadster/M Coupe, and E85/E86 Z4 M Roadster, M Coupe. If you're pulling the head, intake manifold, or doing any other upper end engine work this set can be a time and money saver. This set includes all of the commonly replaced gaskets, seals, and o-rings when overhauling the head. It's also a useful kit to have and dip into any time you're doing upper end engine work. Not having a critical seal or gasket on hand can ruin your work and this gasket set can prevent that from happening. This Victor Reinz set includes the head gasket.
BMW #QtyDescription
071199035461left timing rail upper bolt seal
071199630724VAN0S oil line seal ring
071199631292crankcase vent banjo bolt seals
071199632522screw plug seal ring
071199633421right upper timing rail bolt seal ring
071199634181timing chain tensioner seal ring
111214373952valve cover stud grommet seal
1112783097213valve cover stud grommet seal
111278312716spark plug hole profile gasket
111278320341main valve cover gasket
111278370241oil fill cap seal ring
111278370251crankcaske oil separator seal ring
111417367581VAN0S-camshaft plate o-ring
111578309661crankcase oil separator o-ring, large
111578321191crankcase oil separator plug o-ring
113113173181inside o-ring for internal VAN0S regulating valve
113490644572valve stem seal, 2 sets = 24 valves
113678319381VAN0S unit profile gasket
114113060821outside o-ring for internal VAN0S regulating valve
115313184021thermostat-to-water pump o-ring
115378307083coolant pipe o-ring gasket
115378307092thermostat housing connector o-ring
116114076951intake bellows o-ring profile gasket
116178301041intake bellows-to-airbox gasket
116278306676exhaust manifold port gasket
117275052591air pump valve profile gasket
121417483982camshaft position sensor o-ring
135478314836throttle body o-ring
136414374746fuel injector o-ring, upper
136478306116fuel injector o-ring, lower
111278359181head gasket
This item fits the following BMWs:
2001-2006 E46 BMW M3
2001-2002 Z3 BMW Z3 M Roadster Z3 M Coupe
2006-2008 E85 BMW Z4 M Roadster Z4 M Coupe
This set of top-end gaskets is a both a time and money saver. It includes all of the commonly replaced gaskets, seals, and o-rings when pulling the cylinder head for overhaul. Having these on hand instead of chasing them down at the last minute will save you time, money, and frustration. With the head off the car you're going to want or need to replace these items anyway to ensure it's free of fluid and vacuum leaks. This is especially important because the newer BMW models have very strict emissions controls and vacuum and oil leaks can create turmoil in the system. Even if you're not pulling the head this set includes so many valuable parts you'll want to keep this on hand to use for spares.
This item fits the following BMWs:
2003-2006 E46 BMW 325i 325ci 325xi 330i 330ci 330xi
9/2002-on E39 BMW 525i 530i
2004-2005 E60 BMW 525i 530i
2004-2006 E83 BMW X3 2.5i X3 3.0i
2003-2006 E53 BMW X5 3.0i
9/2002-on Z3 BMW Z3 2.5i Z3 3.0i
2003-2006 E85 BMW Z4 2.5i Z4 3.0i
This product was last offered at the strikethrough price on
08-26-2026
Stainless steel filtration is not a new technology but is quickly gaining popularity in the automotive segment. With the ability to filter down as small as a paper filter element with the ability to be washed and reused!
The K&P Engineering filter element is made from medical grade, type 304 stainless steel micronic filter cloth to provide unmatched protection against oil contamination and resultant engine damage. A one inch square of this material flows an incredible 1.9 gallons of oil per minute at only 1 PSI pump pressure. The adhesive used in the filter assembly process is good to 600 degrees Fahrenheit, far above normal engine operating temperatures. A super strength nickel-plated neodymium rare earth magnet is installed in the top of the element for magnetic pre-filtering of the oil. The sophisticated bypass is engineered for proper differential pressures and consistent operation, delivering a greater percentage of filtered oil while being very easy to clean. The twist lock design assures positive filter element placement and allows for easy disassembly, inspection, and cleaning. The quad-ring gasket doubles the seal between the filter and the engine. Finally, the filter housing is carved out of solid 6061T6 billet aluminum, which not only looks trick but aids in dissipating heat.
K&P Engineering manufactures stainless steel filters for a vast array of engines around the world. Staying at the forefront of design and testing allows this company to offer a top-tier product for your European vehicle.
Features:
At regular oil changes, clean to K&P's specifications for continued used - a true lifetime filter.
This part fits the following BMWs:
1991 - 1999 E36 Coupe 323i 325is 328i
1993 - 1999 E36 Convertible 323i 325i 328i
1990 - 1999 E36 Sedan 325i 328i
1989 - 1995 E34 525i, 530i,
1998 - 2004 E39 Touring 525i 528i
1996 - 2004 E39 Sedan 525i 528i 530i
1999 - 2001 E46 Convertible 323ci 325ci 330ci
2002-2006 E46 Convertible 325ci 330ci
1998 - 2001 E46 323ci 325ci 330ci M3
2002 - 2006 E46 325ci 330ci
1998 - 2001 E46 Touring 323i 325i
2002 - 2006 E46 Touring 325i 325xi
1998 - 2001 E46 Sedan 323i 325i 328i 330i
2002 - 2006 E46 Sedan 325i 325xi 330i 330xi
2000 - 2006 E53 X5 SUV X5 X5 3.0i
Rally Road Productions, Inc. is a team supported by a group of people with great abilities in their area of expertise. From the "web guy" and driving instructor friends, to owners of various machine shops, they have surrounded ourselves with people that can be trusted to create and manufacture quality products. This is the key to ensuring everything that they sell will perform as it was intended. The goal is to increase customer satisfaction and make the customization or performance enhancement of your vehicle a more enjoyable venture.
This oil cooler system is race tested and proven to outflow the euro M3 oil filter housing. Additionally, this particular system uses a sealing mechanism to direct the oil flow through the cooler lines and then through the oil filter. Other cooler caps do not provide this seal and therefore the external oil coolers and lines act as a "balloon". The lines and cooler are pressurized, but oil does not flow through them. Flowing oil means it is being cooled and not just acting as an external reservoir.
Flow testing reveals that the oil cooler cap will outflow the Euro M3 Oil Filter Housing by more than 80% at the same, pressure, RPM, and oil temperature. In the upper RPM range, there is nearly a 100% improvement in flow from the RallyRoad oil cooler cap when compared to the Euro M3 oil filter housing. This is a massive improvement over OE and is a worthwhile upgrade, especially in engines that see severe duty.
Features:
Kit Includes:
This part fits the following BMWs
1992-1999 E36 323i 325i 325is 328i 328is
Schrick Technical Information / Specs
Still looking for more power after bolt-ons? High performance camshafts from Schrick are the way to go. These cams are a direct replacement for the stock cams and give a solid 15+ horsepower boost at the top end and great midrange torque increases too! More gains can be expected with intake and header upgrades and custom software tuning. A slightly lumpy idle is expected at cold start but will be smooth once at operating temperature. This set is just a great all-around cam upgrade for the S54!
These Schrick cams were initially developed for the M3 CSL but they also work great on the US and other non-CSL S54 engines as well. With more duration they are a great match to high flow headers, no cats, or CSL intake manifold upgrades. These are the new "cast" cams from Schrick which require new rocker arms (Schrick recommended or BMW part #11337833259). Professional installation is a must due to the intricacies with the double VAN0S.
This item fits the following BMWs:
