Vanos System

The URO Valvetronic Actuator is a high-quality replacement part for BMW engines, designed to restore precise control over valve timing and lift, enhancing engine performance, fuel efficiency, and responsiveness. Built to meet strict OEM standards, this actuator helps optimize the power and efficiency of BMW engines, making it an ideal solution for maintenance or repair. Available from Turner Motorsport, the URO Valvetronic Actuator ensures a reliable fit and excellent performance for BMW owners.

• Restores optimal control over valve timing for enhanced engine efficiency
• Improves throttle response and provides smoother acceleration
• Contributes to lower emissions and better fuel economy
• High-quality construction built for long-lasting durability
• Direct-fit replacement compatible with select BMW models
• Available from Turner Motorsport, a trusted source for BMW parts

The URO Valvetronic Actuator is a cost-effective replacement that delivers the reliable, high-performance operation BMW owners expect.

The VANOS system on your N51, N52, and N54 engine controls the valve timing inside the engine. The system is hydraulically operated based on instructions from the engine computer. It's very complex and BMW has not yet perfected the system. The VAN0S solenoid is the actuator that takes instruction from the ECU and activates the VANOS unit on the front of the engine. When the solenoid is failing (or failed) you can end up with a rough running engine, misfires, bad fuel economy, lack of power, and more. It should trigger multiple fault codes and a check engine light for misfires, camshaft control, VAN0S solenoid, boost pressure control, and maybe others. It's important to thoroughly troubleshoot fault codes but VAN0S solenoids are a known issue with these engines.

The VANOS solenoids are located on the front of the engine and may be replaced without removing many other components. In some cases, you may be able to remove the suspect one, clean it, reinstall, and reset your fault codes. If your fault codes come back it's a strong indication that a replacement is required. Or you can buy the new solenoid and replace instead of doing the work twice.

VANOS solenoid for the intake and exhaust are the same part number. Order 2 if you want to replace them both.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

We recommend replacing the solenoid sealing gaskets as well when replacing the solenoid. You can find these under T#363393

This item fits the following BMWs:
2008-2012 E82 BMW 128i 1M Coupe
2008-2010 E82 BMW 135i
2006-2011 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi 335is - Sedan
2006-2010 E90 BMW 335i 335xi 335i xDrive - Sedan
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive 335is - Coupe
2007-2010 E92 BMW 335i 335xi 335i xDrive - Coupe
2007-2013 E93 BMW 328i - Convertible
2007-2010 E93 BMW 335i - Convertible
2006-2010 E60 BMW 525i 525xi 530i 530xi 528i 528xi 528i xDrive 535i 535xi 535i xDrive
2011 F10 BMW 528i
2006-2010 E83 BMW X3 3.0i X3 3.0si
2007-2013 E70 BMW X5 3.0si
2006-2008 E85 BMW Z4 3.0i Z4 3.0si
2009-2011 Z4 BMW Z4 sDrive30i Z4 sDrive35i Z4 sDrive35is

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

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!

This Valvetronic variable valve timing actuator is designed to optimize engine performance by adjusting the eccentric shaft, effectively increasing or decreasing valve lift and duration as needed. By dynamically controlling valve timing, it enhances power delivery, fuel efficiency, and overall driving performance.

A failing actuator can lead to noticeable power loss, reduced performance, and an illuminated check engine light. Restore your BMW's performance with this premium replacement from Bremmen Parts, designed to meet or exceed OE specifications.

Features:

Exact Fitment: Engineered to perfectly match your BMW’s specifications for seamless installation. Durable Construction: Built with high-strength materials to resist engine heat, vibration, and wear. Precision Manufacturing: Designed to OE dimensions for accurate clearances and alignment. Optimal Performance: Restores proper timing and functionality at all engine speeds. Get your BMW back on the road with reliable performance and confidence.