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BMW Internal Engine Parts

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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ACL - Corporate Logo
T#:640090
Part#: 10B1580HX
In Stock
$ 376.99

This product was last offered at the strikethrough price on
03-17-2026

$ 224.99 USD
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$ 224.99 USD
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Includes upper and lower bearing shells for a complete rod bearing replacement. Race Series with 0.025mm (.001”) extra clearance for better oiling.
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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ACL - Corporate Logo
T#:638405
Part#: 6B1569HX
In Stock at Vendor
$ 149.99 USD
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$ 149.99 USD
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Includes upper and lower bearing shells for a complete rod bearing replacement. Race Series with 0.025mm (.001”) extra clearance for better oiling. High-performance Trimetal engine bearings Designed to withstand higher RPM conditions High-strength overlay plate with reduced thickness for improved fatigue properties
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ACL - Corporate Logo
T#:10811990
Part#: ACL6B1584HX
In Stock
$ 258.99

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

$ 209.99 USD
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$ 209.99 USD
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The ACL N54 Race Series High-Performance Rod Bearing Set is an elite enhancement tailored exclusively for BMW N54 engine models. Meticulously engineered for precision and durability, these rod bearings deliver heightened performance and reliability even under intense conditions. Crafted from premium materials and engineered to precise specifications, they ensure exceptional strength and longevity. This makes them the perfect selection for enthusiasts and professional racers striving to maximize the performance and endurance of their N54-powered vehicles.
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Cat Cams - Corporate Logo
T#:578594
Part#: 1301413
In Stock
$ 1,051.99 USD
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$ 1,051.99 USD
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Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is.

Sneed4Speed - Corporate Logo
T#:14551946
Part#: NSRBS
Ships in 2 Business Days
$ 83.99 USD
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$ 83.99 USD
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Sneed4Speed R56 Mini Engine Rod Bearing for N14, N16, N18 1.6L Engine

Upgrade your Mini's engine performance with Sneed4Speed's R56 Mini Engine Rod Bearing, tailored specifically for N14, N16, N18 1.6L engines. Crafted from top-grade materials, these bearings guarantee exceptional performance and durability.

  • Optimized for N14, N16, N18 1.6L engines
  • Enhances overall engine performance
  • Durable construction for long-lasting reliability
  • Precision engineering ensures a perfect fit
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Cat Cams - Corporate Logo
T#:578583
Part#: 1303506
Ships on Sep 28, 2026
$ 2,233.99 USD
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$ 2,233.99 USD
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Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is.

Cat Cams - Corporate Logo
T#:4414885
Part#: 1301805KIT
Special Order: No Guaranteed ETA
$ 4,372.99 USD
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$ 4,372.99 USD
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Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is. The included rocker arm kit consist of: - 24x "CAT031" rocker arm, steel billet, coated - 1x oil connector bridge - rocker arms with 0.5mm oil jet hole towards the cam/follower contact area - rocker arm shafts need to be drilled at each rocker arm (in the groove already present) - rocker arm shafts need to be drilled at oil bridge connector (no need to make extra groove, connector has internal groove) - intake rocker arm shaft needs front plug to close - intake rocker arm shaft has no oil feed so an oil bridge is required to connect the intake/exhaust rocker arm shafts *Please note that the factory cams ave a pressure regulator valve that needs to be removed and installed in the new cams*
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5150 Autosport - Corporate Logo
T#:23416542
Part#: ARP-HSK-S56-CA
In Stock
$ 999.99 USD
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$ 999.99 USD
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Sneed4Speed - Corporate Logo
T#:15943313
Part#: N14RODOEM
Ships in 2 Business Days
$ 249.99 USD
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$ 249.99 USD
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MINI N14 N18 1.6L SNEED4SPEED Stock Connection Rods

A reliable upgrade for Mini vehicles, enhancing engine performance and durability. Engineered with precision and quality materials, these stock connection rods ensure optimal power delivery and longevity for the N14 and N18 1.6L engines.

  • Provides improved strength and durability over stock rods
  • Enhances engine performance for a more exhilarating driving experience
  • Precision engineering ensures perfect fit and compatibility with Mini vehicles
  • Designed for easy installation with no modifications required
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Sneed4Speed - Corporate Logo
T#:15943314
Part#: R56S4SROD
Ships in 10 Business Days
$ 599.99 USD
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$ 599.99 USD
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Sneed4Speed proudly presents their Forged H Beam Connecting Rods, tailored to fit R56, R55, R57, R58, R59, R60, and R61 MINIs equipped with the N14 and N18 engines. Crafted from resilient 4340 forged steel, these connecting rods are built to withstand the demands of high-performance engines, boasting a remarkable 700 horsepower rating. This makes them a superb choice for budget-conscious builders aiming to achieve significant power gains.

What sets these connecting rods apart is their direct fit and replacement design, ensuring a straightforward installation process for MINI enthusiasts. But that's not all – these rods come backed by an extraordinary 100-year warranty, providing unparalleled peace of mind to vehicle owners.

Furthermore, the kit includes high-quality chrome moly rod bolts, rated at an impressive 180,000 psi, capable of supporting up to 1000 horsepower. Elevate your MINI's performance and reliability with Sneed4Speed's Forged H Beam Connecting Rods.

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Cat Cams - Corporate Logo
T#:578591
Part#: 1301109
Special Order: No Guaranteed ETA
$ 1,406.99 USD
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$ 1,406.99 USD
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Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is.
Cat Cams - Corporate Logo
T#:578584
Part#: 1303507
Special Order: No Guaranteed ETA
$ 2,233.99 USD
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$ 2,233.99 USD
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Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is.
Cat Cams - Corporate Logo
T#:578590
Part#: 1301108
Special Order: No Guaranteed ETA
$ 1,406.99 USD
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$ 1,406.99 USD
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Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is.

Cat Cams - Corporate Logo
T#:578585
Part#: 1303508
Special Order: No Guaranteed ETA
$ 2,233.99 USD
Free Shipping
$ 2,233.99 USD
Free Shipping
Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is.

Cat Cams - Corporate Logo
T#:578593
Part#: 1301411
Special Order: No Guaranteed ETA
$ 1,051.99 USD
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$ 1,051.99 USD
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Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is.
Cat Cams - Corporate Logo
T#:578578
Part#: 1300657
Special Order: No Guaranteed ETA
$ 933.99 USD
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$ 933.99 USD
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Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is.

Cat Cams - Corporate Logo
T#:578582
Part#: 1303702
Special Order: No Guaranteed ETA
$ 2,233.99 USD
Free Shipping
$ 2,233.99 USD
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Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is.
Cat Cams - Corporate Logo
T#:578587
Part#: 1304406
Special Order: No Guaranteed ETA
$ 1,642.99 USD
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$ 1,642.99 USD
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Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is.

Cat Cams - Corporate Logo
T#:5858417
Part#: 1304213
Special Order: No Guaranteed ETA
$ 1,524.99 USD
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$ 1,524.99 USD
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Upgrade your M52B28 Engine with Cat Cams, a leader in the performance-aftermarket camshaft industry. These Camshafts will increase airflow into the engine by increasing the overall lift and duration over the factory cams. With their Sport cam setup, you can run all factory valvetrain, with no valve spring upgrades necessary! The VANOS (VVT) system on the intake camshaft changes the valve timing: M52 /B28: from 115° to 90° (exhaust: 105° fix) The data are shown for full intake retard (disengaged VVT). Check the distance between valves and piston to be 1mm at least with VVT engaged. Wrong installation will cause severe engine damage! Duration Intake @ .1mm: 257° Exhaust @ .1mm: 257° Intake @ 1mm: 220° Exhaust @ 1mm: 220° Lift Intake: 10.15mm Exhaust: 10.15mm Lobe Angle Intake: 110° Exhaust: 105°
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Cat Cams - Corporate Logo
T#:578599
Part#: 1301712
Special Order: No Guaranteed ETA
$ 1,170.00 USD
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$ 1,170.00 USD
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Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is.
ACL - Corporate Logo
T#:637190
Part#: 6B1584H-.025
Special Order: No Guaranteed ETA
$ 261.99 USD
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$ 261.99 USD
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Upgraded Bearing Shells for you N55/N54/S55B30!
Cat Cams - Corporate Logo
T#:578586
Part#: 1304405
Special Order: No Guaranteed ETA
$ 1,642.99 USD
Free Shipping
$ 1,642.99 USD
Free Shipping
Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is.


Cat Cams - Corporate Logo
T#:1980618
Part#: 1302469/S
Special Order: No Guaranteed ETA
$ 413.99 USD
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$ 413.99 USD
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Experience enhanced performance for your Mini with Cat Cams, proudly made in Belgium. Designed to offer superior performance at an affordable price, Cat Cams provides a range of cams in popular enthusiast upgrade specifications. Specifically engineered for W11 Engines with one overhead cam, these billet steel cams are ideal for achieving various power goals. Benefits include:

  • Enhanced performance for your Mini.
  • Wide range of enthusiast upgrade specifications available.
  • Specifically designed for W11 Engines with one overhead cam.
  • Made from high-quality billet steel for durability and reliability.
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Cat Cams - Corporate Logo
T#:578598
Part#: 1301711
Special Order: No Guaranteed ETA
$ 1,170.00 USD
Free Shipping
$ 1,170.00 USD
Free Shipping
Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is.