BMW Internal Engine Parts for BMW X Series F26 (2015+)

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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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Turner Motorsport - Corporate Logo
T#:34147756
Part#: N5X-WPC-RB
In Stock
Sale - Save 20% $ 519.99

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

$ 415.99 USD
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Sale - Save 20%
$ 519.99

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

$ 415.99 USD
Free Shipping on orders $49 and up

Upgrade your engine build with Turner's WPC-treated Race Series Bearings, engineered for serious performance enthusiasts. Starting with ACL’s high-performance bearing shells, these Race Series bearings are built to withstand extreme RPMs and stress. Utilizing a "Duraglide" tri-metal construction and a high-strength overlay plate, these bearings offer superior oiling and heat resistance for high-RPM operation.

Our WPC-treated bearings take ACL’s already impressive design and enhance it even further. The WPC treatment process strengthens and smooths the bearing surface by firing high-speed, ultra-fine particles at the bearing shells, reducing friction and improving durability. This advanced surface treatment ensures smoother operation and improved heat dissipation, which are critical for any high-performance engine.

Key Features:

Duraglide Tri-Metal Construction: ACL's Race Series bearings feature a high-strength overlay for enhanced performance. Optimized Oiling: Designed to promote better oil flow during high-RPM conditions. Precise Fitment: Manufactured with OEM-level precision using micron tolerance machining. WPC-Treated for Strength: Surface treatment adds strength and reduces friction for improved engine performance. No Flash Plating: Allows for better heat transfer and bearing retention. Thermal Discharge Process: Smoother, stronger components through WPC’s unique thermal discharge technology. Enhanced Heat and Friction Resistance: Built to combat the biggest enemies of high-performance engines. Don’t settle for standard bearings—choose Turner Motorsport WPC-treated Race Series Bearings for the ultimate engine performance upgrade. Perfect for your next engine rebuild or rod bearing service!

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Turner Motorsport - Corporate Logo
T#:34147790
Part#: N5X-WPC-MB
In Stock
$ 607.99

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

$ 487.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 607.99

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

$ 487.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up

Upgrade your engine build with Turner's WPC-treated Race Series Bearings, engineered for serious performance enthusiasts. Starting with ACL’s high-performance bearing shells, these Race Series bearings are built to withstand extreme RPMs and stress. Utilizing a "Duraglide" tri-metal construction and a high-strength overlay plate, these bearings offer superior oiling and heat resistance for high-RPM operation.

Our WPC-treated bearings take ACL’s already impressive design and enhance it even further. The WPC treatment process strengthens and smooths the bearing surface by firing high-speed, ultra-fine particles at the bearing shells, reducing friction and improving durability. This advanced surface treatment ensures smoother operation and improved heat dissipation, which are critical for any high-performance engine.

Key Features:

Duraglide Tri-Metal Construction: ACL's Race Series bearings feature a high-strength overlay for enhanced performance. Optimized Oiling: Designed to promote better oil flow during high-RPM conditions. Precise Fitment: Manufactured with OEM-level precision using micron tolerance machining. WPC-Treated for Strength: Surface treatment adds strength and reduces friction for improved engine performance. No Flash Plating: Allows for better heat transfer and bearing retention. Thermal Discharge Process: Smoother, stronger components through WPC’s unique thermal discharge technology. Enhanced Heat and Friction Resistance: Built to combat the biggest enemies of high-performance engines. Don’t settle for standard bearings—choose Turner Motorsport WPC-treated Race Series Bearings for the ultimate engine performance upgrade. Perfect for your next engine rebuild or main bearing service!

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Turner Motorsport - Corporate Logo
T#:34147760
Part#: N20-WPC-RB
In Stock
Sale - Save 25% $ 485.99

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

$ 364.49 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 485.99

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

$ 364.49 USD
Free Shipping on orders $49 and up

Upgrade your engine build with Turner's WPC-treated Race Series Bearings, engineered for serious performance enthusiasts. Starting with ACL’s high-performance bearing shells, these Race Series bearings are built to withstand extreme RPMs and stress. Utilizing a "Duraglide" tri-metal construction and a high-strength overlay plate, these bearings offer superior oiling and heat resistance for high-RPM operation.

Our WPC-treated bearings take ACL’s already impressive design and enhance it even further. The WPC treatment process strengthens and smooths the bearing surface by firing high-speed, ultra-fine particles at the bearing shells, reducing friction and improving durability. This advanced surface treatment ensures smoother operation and improved heat dissipation, which are critical for any high-performance engine.

Key Features:

Duraglide Tri-Metal Construction: ACL's Race Series bearings feature a high-strength overlay for enhanced performance. Optimized Oiling: Designed to promote better oil flow during high-RPM conditions. Precise Fitment: Manufactured with OEM-level precision using micron tolerance machining. WPC-Treated for Strength: Surface treatment adds strength and reduces friction for improved engine performance. No Flash Plating: Allows for better heat transfer and bearing retention. Thermal Discharge Process: Smoother, stronger components through WPC’s unique thermal discharge technology. Enhanced Heat and Friction Resistance: Built to combat the biggest enemies of high-performance engines. Don’t settle for standard bearings—choose Turner Motorsport WPC-treated Race Series Bearings for the ultimate engine performance upgrade. Perfect for your next engine rebuild or rod bearing service!

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ACL - Corporate Logo
T#:567606
Part#: 6B1584H-STD
In Stock
$ 193.99 USD
Free Shipping
$ 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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Bav Auto Tools - Corporate Logo
T#:580444
Part#: B8800139
Ships on Sep 1, 2026
Sale - Save 5% $ 203.99

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

$ 193.79 USD
Free Shipping
Sale - Save 5%
$ 203.99

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

$ 193.79 USD
Free Shipping
Used in removal and installation of the front crankshaft seal on BMW N55 engines, a common job that you can save yourself a ton of money doing at home.

Bav Auto Tools - Corporate Logo
T#:580412
Part#: B8800104
In Stock
Sale - Save 5% $ 147.99

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

$ 140.59 USD
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Sale - Save 5%
$ 147.99

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

$ 140.59 USD
Free Shipping
For removal and installation of the rear crankshaft seal on BMW N51, N52 and N54 engines.
Bav Auto Tools - Corporate Logo
T#:580431
Part#: B8800124
Ships on Sep 1, 2026
Sale - Save 15% $ 178.99

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

$ 152.14 USD
Free Shipping
Sale - Save 15%
$ 178.99

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

$ 152.14 USD
Free Shipping
For installation and removal of pressure springs on intermediate levers of valve train. Ensures quick, easy and safe handling of these high force springs.

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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MANLEY - Corporate Logo
T#:17073607
Part#: 647005C-6
In Stock
8% off MSRP $ 1,208.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 1,111.99 USD
Free Shipping on orders $49 and up
8% off MSRP
$ 1,208.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 1,111.99 USD
Free Shipping on orders $49 and up

BMW N55 S55 37cc Platinum Series Dish Piston Set - 84.5mm Bore is designed for high-performance applications, providing exceptional strength and durability for BMW engines. Turner Motorsport offers this premium piston set to enhance engine reliability and efficiency.

  • High-Strength Material: Crafted from 2618 high-strength material for superior durability and performance.
  • Quiet Start-Ups: Offset wrist pin design minimizes noise during engine start-ups.
  • Premium Pins: Includes a .210” wall Premium Chrome Moly pin (Standard Series) or a .210” wall 9310 alloy pin (Extreme Duty Series) for added strength.
  • Pressure Balance Groove: Features a pressure balance groove to improve piston stability and efficiency.
  • Valve Accommodation: Designed to accommodate +1mm valve sizes for enhanced engine performance.
  • Top-Quality Rings: Comes with premium steel top rings, Napier seconds, and round wire locks for optimal sealing and reliability.
  • Recommended Clearance: Piston clearance of .0035” measured .850” from the bottom of the oil ring for precise fitment.
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5150 Autosport - Corporate Logo
T#:23416526
Part#: FER-HPVSK-N55
Ships in 3 Business Days
$ 1,049.99 USD
Free Shipping on orders $49 and up
Maximize your N55 or S55 engine's performance with Ferrea Valve Springs and Retainers, precision components crafted from chromoly alloy. These springs undergo special thermal treatment, ensuring exceptional durability even in extreme racing conditions. Addressing issues like valve binding, breakage, and float, Ferrea valve springs are meticulously heat-treated and stress-relieved, providing stability for high-lift and high-RPM racing engines while minimizing load loss. Precision CNC machined titanium retainers offer superior strength and stability. Ferrea's Spring Seat Locators, made from 4140 chromoly alloy, guarantee precise tolerances and a flat, parallel spring pad with a hard Nitride surface treatment for exceptional toughness and anti-wear characteristics. Please note that installation requires the expertise of an engine builder.
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MANLEY - Corporate Logo
T#:17073609
Part#: 647000C-6
In Stock at Vendor
8% off MSRP $ 1,208.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 1,111.99 USD
Free Shipping on orders $49 and up
8% off MSRP
$ 1,208.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 1,111.99 USD
Free Shipping on orders $49 and up

Upgrade the performance of your BMW N55/S55 3.0L engine with the Turner Motorsport Manley 37cc Platinum Series Dish Piston Set. Crafted from high-strength 2618 material, these pistons offer exceptional durability and reliability. The offset wrist pin design ensures quiet start-ups, while the inclusion of both Premium Chrome Moly and 9310 alloy .210” wall pins caters to varying needs. The pressure balance groove, compatibility with +1mm valve sizes, and premium steel top rings with Napier seconds and round wire locks make these pistons a top-notch choice. With a recommended piston clearance of .0035”, measured .850” from the bottom of the oil ring, these pistons guarantee optimal performance for your BMW engine.

  • Manley 37cc Platinum Series Dish Piston Set for BMW N55/S55 3.0L engine.
  • High-strength 2618 material for exceptional durability.
  • Offset wrist pin for quiet start-ups.
  • Includes both Premium Chrome Moly and 9310 alloy .210” wall pins.
  • Pressure balance groove for enhanced performance.
  • Accommodates +1mm valve sizes for customization.
  • Premium steel top rings with Napier seconds and round wire locks included.
  • Recommended piston clearance of .0035” ensures optimal engine function.

Enhance your BMW's engine with the Turner Motorsport Manley 37cc Platinum Series Dish Piston Set, delivering reliability and performance.

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ACL - Corporate Logo
T#:34114209
Part#: 4B1584H-STD
In Stock
$ 182.99

This product was last offered at the strikethrough price on
05-04-2026

$ 124.99 USD
Free Shipping on orders $49 and up
$ 124.99 USD
Free Shipping on orders $49 and up

Introducing the BMW N20/N26 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 N20 and N26 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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MANLEY - Corporate Logo
T#:17073606
Part#: 647005CE-6
In Stock
7% off MSRP $ 1,309.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 1,222.99 USD
Limited Qty Sale
7% off MSRP
$ 1,309.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 1,222.99 USD
Limited Qty Sale
5150 Autosport - Corporate Logo
T#:23416542
Part#: ARP-HSK-S56-CA
In Stock
$ 999.99 USD
Free Shipping
$ 999.99 USD
Free Shipping

5150 Autosport - Corporate Logo
T#:26238415
Part#: 5150-HPMBS-N55
Ships in 3 Business Days
$ 549.99 USD
Free Shipping on orders $49 and up
5150 High Performance Coated Main Bearing Sets are made for the demands of high performance engine builds. Treated shells and coated by Calico to reduce friction, these bearings allow your engine to generate more power and resist "spinning" under stress. These coated bearings also have thermal resistant properties that not only perform in high HP applications like forced induction or race use, but also help prevent sudden engine failure in the event of oil pressure loss. 5150 bearings have proven themselves on and off the track, lasting longer and outperforming other bearings on the market.
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5150 Autosport - Corporate Logo
T#:23416508
Part#: FER-HPVK-S55-T-3
Ships in 3 Business Days
$ 929.99 USD
Free Shipping on orders $49 and up
Increase the power output of your N55/S55 engine with the high-performance Ferrea valve kit. Renowned as the industry's most reliable extreme-duty valves, they're meticulously crafted from aerospace-grade alloys, employing an exclusive two-step slow forging process for optimal grain flow and material structure integrity. A 48-hour heat treatment and stress-relieving process enhance molecular integrity. The valves feature avionics-quality hard chrome and a specially applied hard tip. Standard size: 32mm intake / 28mm exhaust, with a triple groove valve design. Compatible with factory valve locks ("Valve Keepers"), the kit includes 12x Intake Valves and 12x Exhaust Valves for a comprehensive engine upgrade!
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CP Carrillo - Corporate Logo
T#:13332229
Part#: CAR-CRS-N20-WMC
Ships on Aug 6, 2026
$ 1,333.99

This product was last offered at the strikethrough price on
03-06-2026

$ 1,199.99 USD
Free Shipping on orders $49 and up
$ 1,199.99 USD
Free Shipping on orders $49 and up

ACL - Corporate Logo
T#:637190
Part#: 6B1584H-.025
Special Order: No Guaranteed ETA
$ 261.99 USD
Free Shipping
$ 261.99 USD
Free Shipping
Upgraded Bearing Shells for you N55/N54/S55B30!
CP Carrillo - Corporate Logo
T#:25042509
Part#: SCR9101-4
Back Ordered
$ 1,230.99 USD
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$ 1,230.99 USD
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Carrillo rods are your number one option for performance connecting rods! If you are looking to upgrade your N20 engine to handle greater power, we highly recommend these Pro-H connecting rods. Upgrading connecting rods in your engine can bring several benefits, particularly if you're looking to enhance performance, reliability, and overall durability. Here are some reasons why you might consider investing in upgraded connecting rods: Increased Strength: Upgraded connecting rods are often made from stronger materials, such as forged steel or titanium, compared to stock rods. This increased strength helps withstand higher levels of stress and load, making them suitable for high-performance applications. Improved Durability: Enhanced materials and manufacturing processes contribute to improved durability, reducing the risk of connecting rod failure, especially in high-stress situations. This is crucial for engines that undergo frequent high-speed or high-stress conditions, such as in racing or heavy-duty applications. Higher RPM Capability: Upgraded connecting rods are designed to handle higher engine RPM (revolutions per minute) without succumbing to fatigue or deformation. This is beneficial for those seeking increased horsepower and torque at higher engine speeds. Reduced Weight: Some upgraded connecting rods are engineered to be lighter while maintaining strength, contributing to a lower overall rotating mass in the engine. This can result in quicker revving, improved throttle response, and better overall performance. Enhanced Precision: Upgraded rods often undergo more precise machining processes, ensuring tight tolerances and improved balance. This precision can lead to better engine stability and reduced vibration, ultimately extending the life of engine components. Compatibility with High-Performance Builds: If you're planning on modifying your engine for increased horsepower through methods like turbocharging or supercharging, upgraded connecting rods become essential. They provide the necessary strength and reliability to handle the increased stresses associated with forced induction. Prevention of Catastrophic Failures: Upgrading connecting rods can act as a preventive measure against catastrophic engine failures. The improved strength and durability reduce the risk of a connecting rod breaking, which could lead to severe engine damage. Specifications: CC(in): 5.683 CC(mm): 144.35 Style: PRO-H Bolt Size: 3/8 Bolt Type: WMC Pin Width(in): 0.822 Pin Width(mm): 20.88 Big Width(in): 0.822 Bid Width(mm): 20.88 Big Bore(in): 2.1112 Big Bore(mm): 53.62 Pin Size: 22mm QTY: Set of 4 Founded by Fred Carrillo in 1963, Carrillo Connecting Rods was established with an unwavering commitment to uncompromising standards in manufacturing. Fred recognized that the relentless pursuit of speed demanded an equally fervent dedication to the quality of components. This foundational philosophy remains as strong today as it was at the inception of Carrillo in 1963. At CP-Carrillo, quality and pride are inseparable. The process of crafting a CP-Carrillo rod transcends mere forging, production targets, and shipping deadlines. The evolution of connecting rod design has become a collaborative effort involving skilled specialists. Each connecting rod is a precision symphony, with material specialists, forging experts, production craftsmen, design engineers, and engine specialists contributing their expertise and artistry. Customer feedback plays a pivotal role in our continuous product improvement. The close interaction between customers, engineering, and manufacturing fosters the most effective rod designs, enhancing accuracy and service—a value that becomes apparent during your engine build. CP-Carrillo's dimensional integrity stands unparalleled, setting a standard of excellence in the industry.
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5150 Autosport - Corporate Logo
T#:26238416
Part#: 5150-HPRBS-N55
Ships in 3 Business Days
$ 399.99 USD
Free Shipping on orders $49 and up
5150 High Performance Coated Rod Bearing Sets are made for the demands of high performance engine builds. Treated shells and coated by Calico to reduce friction, these bearings allow your engine to generate more power and resist "spinning" under stress. These coated bearings also have thermal resistant properties that not only perform in high HP applications like forced induction or race use, but also help prevent sudden engine failure in the event of oil pressure loss. 5150 bearings have proven themselves on and off the track, lasting longer and outperforming other bearings on the market.
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URO - Corporate Logo
T#:55749602
Part#: 11367583819
Ships in 1 Business Day
New Item
$ 194.99 USD
$ 194.99 USD
The variable valve timing system on modern BMW engines is critical for both daily street driveability and wide-open throttle performance. When the factory exhaust gear wears down, it compromises the responsiveness of your BMW powerplant.
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5150 Autosport - Corporate Logo
T#:39329323
Part#: SUP-HPVK-S55-32/
Ships in 3 Business Days
$ 1,143.99 USD
Free Shipping on orders $49 and up
MANLEY - Corporate Logo
T#:17073608
Part#: 647000CE-6
Back Ordered
8% off MSRP $ 1,423.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 1,309.99 USD
Free Shipping on orders $49 and up
8% off MSRP
$ 1,423.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 1,309.99 USD
Free Shipping on orders $49 and up


URO - Corporate Logo
T#:43750198
Part#: 11367583818
In Stock
$ 187.99 USD
Free Shipping on orders $49 and up
This sprocket is the replacement cam gear for the inlet camshaft. Replace this so your timing chain meshes perfectly with the gear teeth for optimal performance.
ARP Head Stud Kit BMW S55 Custom Age 625+
N55 Engines it is a MUST to drill and tap!
N55 Engines it is a MUST to drill and tap!
5150 Autosport - Corporate Logo
T#:41458801
Part#: ARP-HSK-S55-CA
Back Ordered
$ 899.99 USD
Free Shipping on orders $49 and up
$ 899.99 USD
Free Shipping on orders $49 and up
Upgrade your S55 with the ARP Head Stud Kit BMW S55 Custom Age 625+ and drive with confidence under pressure.