The main reason all of the VANOS units will eventually fail is because the material used for the sealing rings from the factory is not designed for that type of environment. When this happens the only option that BMW leaves you with is buying a new and expensive VANOS unit with the same sealing rings that failed in your original unit.

The VANOS system found in BMW engines is a great feature (when it’s working properly), keeping your power curve smooth and responsive especially in lower to mid RPM range. What usually goes unnoticed is the gradual loss of power within this range as the vehicle's age due to slowly failing seals within the VANOS unit. The way the VANOS system works is based off of oil pressure triggered by a solenoid that allows for a small range of timing degree adjustment, this is where the power curve is affected. When the seals begin to fail (all of them do) there is less pressure to advance the timing reducing the power in that low to mid range. Because this happens slowly it's very hard to notice a difference until you refresh your VANOS unit, then you easily realize the response you've been missing.

There are a number of symptoms that will plague your car as a result of these failing seals such as erratic idle, engine hesitation, stalling, and increased fuel consumption to name a few. If you've been chasing down any of these symptoms with no fix then this could be your issue.

While you're replacing the seals in your VANOS unit it a good time to install anti-rattle spacers to tighten up the gaps in your stock assembly and get rid of that noisy VANOS clatter.

Seals & O-rings:

The seals  were the main focus of this project since the OE units are built with Buna-N rubber o-rings instead of the ECS supplied Viton rubber o-rings. The Buna-N material quickly hardens from the heat and chemical exposure within the engine, where the Viton is significantly more resistant to these chemicals. This knowledge was also used when it came to the commonly failed o-rings found on the VANOS seal plate, replaced at the solenoid.

Rattle Repair:

When it comes to the VANOS rattle this is commonly described as "marbles in a can", and can be heard throughout the different RPM ranges depending on the engine. These upgraded rings and washers are precision ground from hardened steel to resist wear and deformation keeping your VANOS rattle free. The rattle repair tools are designed specifically for this VANOS anti-rattle repair, design from hardened steel to stand up to the job. Designed to perfectly follow the splines of the shaft for a tight grip when applying the necessary torque to disassemble & reassemble the VANOS transfer gear. The keyed socket was designed with the intent to use a "common" wrench so this can be completed at home in your garage.    

When Servicing your VANOS unit we recommend getting everything you need to replace on the way to service which includes an oil change and valve cover gasket set. Fresh oil and gaskets is the best way to start off a fresh rebuild of any kind giving you the maximum performance of your freshly serviced components.

Don't forget to check out our rebuild PDF to make sure you have everything to get the job done and eliminate the rebuild guess work.

This item fits the following BMWs: 
2000-2001 E46 3 Series M3 M3 Convertible 2000-2006 
2001-2002 Z3 Roadster / Coupe Z3 M Roadster Z3 M Coupe w S54 Engine 
2006-2008 E86 E86 Z4 Z4 M Roadster Z4 M Coupe

BMW E70/E90 M57 3.0L Timing Chain Tensioner

Looking for a reliable timing chain tensioner replacement for your BMW E70 or E90 with the M57 3.0L engine? Turner Motorsport presents the BMW E70/E90 M57 3.0L Timing Chain Tensioner to meet your needs. This tensioner ensures precise timing chain tension, safeguarding against potential damage and optimizing engine performance. Crafted with top-quality materials and precision engineering, it offers the following benefits:

• Ensures precise timing chain tension for optimal engine performance
• Guards against potential damage caused by improper tension
• Crafted with top-quality materials for durability
• Compatible with BMW E70 and E90 models for easy installation

 The timing belt on the M20 engine should be replaced every 50,000 miles. The Gates Racing's timing belt this kit includes  is constructed of HNBR elastomeric composites. That being said, they are 300% stronger than the OE belt & deliver up to three times the heat resistance. Also included in this kit are the following:

• Gates Racing Timing Belt
• Tensioner
• Tensioner Spring and Bolt
• Water Pump & Gasket
• Thermostat & Gasket
• Camshaft Seal
• 1 Liter of Coolant
• Radiator Drain Plug

This kit includes sufficient coolant for a water pump replacement. If you intend to perform additional cooling system maintenance, pick yourself up an additional bottle of coolant.

For vehicles with production date up to 09/1987.

 The timing belt on the M20 engine should be replaced every 50,000 miles. The Gates Racing's timing belt this kit includes  is constructed of HNBR elastomeric composites. That being said, they are 300% stronger than the OE belt & deliver up to three times the heat resistance. Also included in this kit are the following:

• Gates Racing Timing Belt
• Tensioner
• Tensioner Spring and Bolt
• Water Pump & Gasket
• Thermostat & Gasket
• Camshaft Seal
• 1 Liter of Coolant
• Radiator Drain Plug

This kit includes sufficient coolant for a water pump replacement. If you intend to perform additional cooling system maintenance, pick yourself up an additional bottle of coolant.

For vehicles with production date from 09/1987.For vehicles with production date from 09/1987.

The URO Timing Chain Guide Rail - Lower is a crucial component for maintaining the timing precision and reliability of BMW engines. Designed to meet or exceed OEM specifications, this guide rail ensures secure positioning of the timing chain to prevent premature wear and extend the life of your BMW engine. Available through Turner Motorsport, this lower guide rail offers BMW owners peace of mind and dependable performance.

• Premium-quality construction built for durability and longevity
• Reduces timing chain vibration, minimizing engine noise and wear
• Precisely engineered to OEM standards for an exact fit in BMW models
• Improves engine timing stability for optimal performance
• Available from Turner Motorsport for reliable BMW parts

The URO Timing Chain Guide Rail - Lower is a cost-effective solution that allows BMW owners to keep their engines running smoothly with a direct-fit replacement that restores timing accuracy.

INA - Camshaft Sprocket for BMW Engine Timing

INA - Camshaft Sprocket is an essential component for maintaining precise engine timing and optimal performance in your BMW. This high-quality sprocket ensures smooth synchronization between the camshaft and crankshaft, enhancing combustion efficiency and reducing wear on the timing chain. Manufactured to meet OEM standards, this part is available through Turner Motorsport, ensuring a reliable and durable solution for a variety of BMW models.

Key Benefits:

• OEM-quality part specifically designed for BMW engines
• Guarantees precise timing for improved engine efficiency and power delivery
• Crafted from durable materials to withstand extreme operating conditions
• Reduces strain on the timing chain and other engine components
• Engineered for a perfect fit, ensuring easy installation and reliable operation

Upgrade your BMW's performance with the INA - Camshaft Sprocket, a trusted choice for maintaining engine reliability and efficiency. Available at Turner Motorsport, this component is ideal for repairs, maintenance, and performance tuning.