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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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Cylinder Head Oil Check Valve

2X Entries Into Our F80 M3 Sweepstakes

T#:35863150

Part#: 11367541692

In Stock

$ 39.08 USD

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$ 39.08 USD

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Genuine BMW Non-Return Valve
This item fits the following BMW Chassis:
E82 1M Coupe,E70 X5 X5,E71 X6,E82,E83 X3,E85 Z4,E86 Z4,E89 Z4,E90,E92,E93,F01,F02,F10,F25 X3

Fits BMW Engines including:
N51,N52,N52N,N54,N54T

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Timing Chain - Upper

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T#:17871154

Part#: 11311432177

In Stock

Sale - Save 20% $ 27.99

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

$ 22.39 USD

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Sale - Save 20%

$ 27.99

This product was last offered at the strikethrough price on
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$ 22.39 USD

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Check Valve - 11367541692

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T#:37655979

Part#: 11367541692

In Stock

Sale - Save 11% $ 32.99

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

$ 29.37 USD

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Sale - Save 11%

$ 32.99

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

$ 29.37 USD

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A damaged, leaking, or missing vacuum check valve can lead to engine performance problems, trigger the check engine light, and potentially cause your vehicle to fail an emissions test.

BMW N52 Valve Cover & PCV Valve Refresh Kit

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T#:21735875

Part#: VALVECVRN52KT

In Stock

Sale - Save 11% $ 465.99

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

$ 414.91 USD

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Sale - Save 11%

$ 465.99

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

$ 414.91 USD

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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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N52 Valvetronic Camshaft Adjusting Unit - 11377548388

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T#:36066208

Part#: 11377548388

In Stock

Sale - Save 20% $ 148.99

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

$ 119.13 USD

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$ 148.99

This product was last offered at the strikethrough price on
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$ 119.13 USD

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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.

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Timing Component

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T#:17871158

Part#: 11367583208

In Stock

Sale - Save 20% $ 199.99

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

$ 159.99 USD

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$ 199.99

This product was last offered at the strikethrough price on
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$ 159.99 USD

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Bremmen Camshaft Position Sensor - E46 E39 E60 E83 Z3 Z4

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T#:640145

Part#: 12147518628

Ships on Dec 16, 2026

Sale - Save 16% $ 31.99

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

$ 26.87 USD

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Sale - Save 16%

$ 31.99

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

$ 26.87 USD

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A bad cam sensor can cause a variety of problems from hard starting to stalling at low speeds. Cam sensor replacement has been known to cure many drivability issues

Bav Auto Crankshaft Position Sensor - Multiple BMWs

10X Entries Into Our F80 M3 Sweepstakes

T#:639826

Part#: 13627525015

Special Order: No Guaranteed ETA

$ 67.99 USD

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$ 67.99 USD

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This crankshaft position sensor provides the ECU with the engine speed signal. It is mounted in either the engine block or the bell housing of the transmission on most cars. 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.

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Bremmen Parts Cylinder sleeve - E60, E61, E70, E71, E82, E83, E88, E9...

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T#:1195922

Part#: 11127575422

In Stock

Sale - Save 3% $ 6.59

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

$ 6.39 USD

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$ 6.59

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The sleeves that go in each cylinder of the cylinder cover

Intake Hydraulic Tappet - Priced Each

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T#:56797117

Part#: 11337548690

Ships on Dec 14, 2026

Sale - Save 10% $ 10.99

This product was last offered at the strikethrough price on
10-08-2026

$ 9.89 USD

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$ 10.99

This product was last offered at the strikethrough price on
10-08-2026

$ 9.89 USD

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Oil Pump Chain

10X Entries Into Our F80 M3 Sweepstakes

T#:26271802

Part#: 11417576915

In Stock

Sale - Save 15% $ 18.99

This product was last offered at the strikethrough price on
09-16-2026

$ 16.14 USD

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Sale - Save 15%

$ 18.99

This product was last offered at the strikethrough price on
09-16-2026

$ 16.14 USD

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