BMW Internal Engine Parts for BMW X Series E83 (2004-2010)

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Rebuilding your engine or giving your cylinder head an overhaul? Internal engine components covers parts that are located within the engine block and cylinder head. Examples include: timing chains and tensioners, rocker arms, rod bolts and studs, head bolts, valve springs, connecting rods, and more. These are Genuine BMW engine parts, performance upgrades, or approved aftermarket brands that have a long track record of reliability and quality.

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ACL - Corporate Logo
T#:567606
Part#: 6B1584H-STD
In Stock
$ 193.99 USD
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$ 193.99 USD
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Introducing the BMW N52, N54, N55, and S55 Race Series High-Performance Con Rod Bearing Set by Automotive Components Limited. Elevate your BMW's performance with these precision-engineered con rod bearings, specifically designed for performance BMW engines.

Key Features:

Premium Quality: Crafted with the utmost precision and durability, this con rod bearing set ensures high performance and reliability for your BMW. Race Series Design: Engineered to meet the demands of race applications, these bearings are well-suited for high-performance driving scenarios. Enhanced Engine Protection: The bearings provide essential protection for your engine components, ensuring their longevity even under extreme conditions. Perfect Fit: Designed to seamlessly fit BMW N52, N54, N55, and S55 engines found in many newer BMWs, these bearings are a direct replacement for your stock components. Improved Performance: Experience enhanced engine performance and responsiveness, making it ideal for racing and high-performance driving. Upgrade your BMW with the Race Series High-Performance Con Rod Bearing Set from Automotive Components Limited. Enhance your vehicle's performance and enjoy peace of mind knowing your engine is protected by top-quality components.

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Packaged by Turner - Corporate Logo
T#:5416764
Part#: 11377548388TMSKT
Ships in 5 Business Days
Sale - Save 19% $ 220.99

This product was last offered at the strikethrough price on
05-03-2026

$ 179.20 USD
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Sale - Save 19%
$ 220.99

This product was last offered at the strikethrough price on
05-03-2026

$ 179.20 USD
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Includes new Valvetronic motor, gasket, and hardware. The Valv-tronic adjuster unit changes the the timing shaft to adjust the valve timing.

ACL - Corporate Logo
T#:584470
Part#: 7M1532H-STD
In Stock
$ 282.99 USD
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$ 282.99 USD
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Introducing the ACL Race Series High-Performance Main Bearing Set, meticulously crafted for BMW enthusiasts running M20, M50, M52, M54, S50, S52, and S54 engines. Take your BMW’s engine durability and performance to the next level with these race-proven main bearings, designed to handle the demands of aggressive driving and high-RPM scenarios.

Built with ACL’s Duraglide tri-metal technology, this main bearing set ensures exceptional oil flow and resistance to wear, even in extreme conditions. Engineered for performance, this upgrade is a direct replacement for stock BMW main bearings, providing enhanced strength and longevity without compromising factory tolerances.

Key Features:

Race-proven design: Ideal for performance builds, this complete set delivers superior oiling and heat resistance, making it perfect for high-RPM use. Precision fitment: Engineered specifically for BMW’s M and S series engines, offering a reliable solution for common crankshaft bearing wear issues. Duraglide technology: Featuring tri-metal construction, including a copper-lead base and high-strength overlay, for improved oil retention and reduced friction. High-load capacity: Designed to withstand the rigors of spirited driving and competition, preventing distortion and wear during peak performance. Optimized for high performance: Eliminates tin flash plating, allowing for better bearing-to-housing contact and improved durability under extreme pressure. Whether you're rebuilding your BMW for the track or simply want to ensure reliable performance under demanding conditions, the ACL Race Series Main Bearing Set offers the perfect upgrade solution. Boost your engine’s reliability and extend its lifespan with this high-performance bearing set.

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Packaged by Turner - Corporate Logo
T#:21735875
Part#: VALVECVRN52KT
In Stock
Sale - Save 12% $ 465.99

This product was last offered at the strikethrough price on
05-30-2026

$ 411.03 USD
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Sale - Save 12%
$ 465.99

This product was last offered at the strikethrough price on
05-30-2026

$ 411.03 USD
Free Shipping on orders $49 and up
Maintaining the peak performance and reliability of your BMW N52 engine is essential for a smooth and enjoyable driving experience. One of the most effective ways to achieve this is by replacing critical components like the valve cover, crankcase vent hose, angle connector with heating element, and cylinder sleeve. In this article, we'll delve into the numerous benefits of upgrading these vital parts, ensuring your BMW N52 operates at its best. Optimized Engine Performance: Replacing the valve cover, crankcase vent hose, angle connector, and cylinder sleeve enhances your BMW N52's engine performance. The valve cover plays a crucial role in sealing the engine, preventing oil leaks and ensuring optimal valve operation. When you upgrade these components, you reduce the risk of performance-robbing oil leaks and maintain precise valve timing, resulting in improved horsepower and torque. Enhanced Reliability: Reliability is paramount for any BMW owner. These components, when aged or damaged, can lead to severe engine issues. By replacing them, you significantly reduce the likelihood of unexpected breakdowns or costly repairs, ensuring your BMW N52 engine runs smoothly and reliably for years to come. Improved Fuel Efficiency: An efficiently operating engine not only performs better but also consumes less fuel. The replacement of these components leads to better combustion, reduced emissions, and ultimately improved fuel efficiency. This means fewer trips to the gas station and a lighter environmental footprint. Reduced Maintenance Costs: Regular maintenance and repairs can add up over time. By proactively replacing the valve cover, crankcase vent hose, angle connector, and cylinder sleeve, you mitigate the risk of more extensive engine damage that could lead to expensive repairs down the road. In the long term, this can translate into significant cost savings. Extended Engine Lifespan: The longevity of your BMW N52 engine is directly tied to the quality and condition of its components. When you invest in high-quality replacements, you're effectively extending the lifespan of your engine. This not only preserves the value of your BMW but also allows you to enjoy its performance for years to come. Precise Temperature Control: The angle connector with heating element is vital for maintaining optimal engine temperature, especially in cold weather. A malfunctioning or worn-out connector can disrupt temperature control, affecting engine performance. Replacing this component ensures consistent and precise temperature management. Customized Upgrades: When replacing these components, you have the opportunity to choose high-performance or specialized alternatives, allowing you to customize your BMW N52 to your preferences. Whether you prioritize power, efficiency, or specific driving conditions, there are options available to tailor your engine's performance accordingly. Included in the BMW N52 Valve Cover & PCV Valve Refresh Kit: 6 Cylinder Sleeves 1 Alternator Mounting Screw Set 1 Angle Connector with Heating Element 1 Valve Cover - Gasket Included 1 Crankcase Vent Hose
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Packaged by Turner - Corporate Logo
T#:15710818
Part#: 11127514540KT
Ships on Sep 29, 2026
Sale - Save 2% $ 2,332.99

This product was last offered at the strikethrough price on
06-10-2026

$ 2,277.27 USD
Sale - Save 2%
$ 2,332.99

This product was last offered at the strikethrough price on
06-10-2026

$ 2,277.27 USD
When duty calls and its time to replace or refresh your cylinder head, you'll need quite a few components. Look no further because we've collected all those parts into one kit including notable items like 7 liters of BMW oil, 1 gallon of coolant, all seals and gaskets needed and required hardware all available in one kit at the push of a button!
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ACL - Corporate Logo
T#:26771713
Part#: 6B1490H-STD
In Stock
$ 156.99 USD
Free Shipping on orders $49 and up
The ACL BMW M20/M50/M52/M54 Engine Standard Size High Performance Rod Bearing Set represents a specialized enhancement tailored to enhance the durability and reliability of BMW M20, M50, M52, and M54 engines. Engineered with meticulous precision, these rod bearings deliver improved performance and resilience, especially under rigorous conditions. Crafted with precision and employing premium materials, they guarantee exceptional strength and extended lifespan. As such, they are the ideal solution for enthusiasts and professional drivers aiming to enhance the performance and longevity of their BMW engines.
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ECS - Corporate Logo
T#:585720
Part#: 11211706847WPCKT
In Stock
Sale - Save 3% $ 250.99

This product was last offered at the strikethrough price on
06-14-2026

$ 243.46 USD
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Sale - Save 3%
$ 250.99

This product was last offered at the strikethrough price on
06-14-2026

$ 243.46 USD
Free Shipping
What's better than using new crank bearings in your next engine build? WPC-treated bearings! What is WPC, you ask? 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. What are you waiting for? Use WPC-treated bearings on your next engine build or crank service!
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ECS - Corporate Logo
T#:585258
Part#: 11247628034WPCKT
Ships on Aug 18, 2026
Sale - Save 3% $ 803.88

This product was last offered at the strikethrough price on
06-14-2026

$ 779.76 USD
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Sale - Save 3%
$ 803.88

This product was last offered at the strikethrough price on
06-14-2026

$ 779.76 USD
Free Shipping

BMW N54 N55 WPC Treated Genuine BMW Rod Bearing Set

Ensure optimal engine performance with the BMW N54 N55 WPC Treated Genuine BMW Rod Bearing Set. This genuine BMW rod bearing set, treated with WPC technology, is specifically designed for BMW N54 and N55 engines, providing several benefits for engine longevity and reliability. Engineered with precision and quality in mind, it offers:

  • Enhanced durability and wear resistance for extended engine life
  • Reduced friction and heat buildup for improved engine performance
  • WPC treatment for superior lubrication and protection against metal-to-metal contact
  • Genuine BMW quality and reliability for peace of mind

Upgrade your BMW N54 or N55 engine with this high-quality rod bearing set for enhanced performance and longevity.

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ACL - Corporate Logo
T#:637190
Part#: 6B1584H-.025
Special Order: No Guaranteed ETA
$ 261.99 USD
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$ 261.99 USD
Free Shipping
Upgraded Bearing Shells for you N55/N54/S55B30!