BMW Internal Engine Parts for BMW 3 Series F31 (2014+)

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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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Race Series High Performance Connecting Rod Bearing Set - BMW N52/N54...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ACL - Corporate Logo
T#:567606
Part#: 6B1584H-STD
In Stock
$ 193.99 USD
Free Shipping
$ 193.99 USD
Free Shipping

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 3.0L Standard Size Main Bearing Set BMW N52/N54/N55/S55B30 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ACL - Corporate Logo
T#:25706124
Part#: ACL7M1397H-STD
Ships on Aug 21, 2026
$ 256.99 USD
Free Shipping on orders $49 and up
Race Series High Performance Connecting Rod Bearing Set - BMW N20/N26...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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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OEM Elring Cylinder Head Bolt Set - N20/26 2.0L
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Elring - Corporate Logo
T#:2602240
Part#: 11122212157
In Stock
$ 75.99

This product was last offered at the strikethrough price on
05-07-2026

$ 47.99 USD
Free Shipping on orders $49 and up
$ 47.99 USD
Free Shipping on orders $49 and up
If you remove your cylinder head replacement head bolts are a must. These bolts are designed to be torqued down and not reused.

Inline 6 RACE Series Bearing Shells - Set
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ACL - Corporate Logo
T#:637190
Part#: 6B1584H-.025
Special Order: No Guaranteed ETA
$ 261.99 USD
Free Shipping
$ 261.99 USD
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Upgraded Bearing Shells for you N55/N54/S55B30!
WPC-Treated Performance Rod Bearing Installation Kit - B46 / B48 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:36066270
Part#: B48-WPC-RBKT2
In Stock
Sale - Save 25% $ 551.99

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

$ 413.62 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 551.99

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

$ 413.62 USD
Free Shipping on orders $49 and up

If your engine has higher mileage, don't neglect rod bearing replacement! These bearings are sandwiched between the connecting rod and crankshaft journal and are prone to failure due to overheating, lack of lubrication, or general wear. Replace your rod bearings and prevent a spun bearing.

Starting with ACL’s high-performance bearing shells, our 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.

Kit includes:

Turner Motorsport WPC-Treated Race Series Rod Bearing Shells (8) Genuine BMW Connecting Rod Bolts (8) Assembly Lube (4 oz.)

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Race Series High Performance Connecting Rod Bearing Set - BMW B46/B48...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ACL - Corporate Logo
T#:34114211
Part#: 4B1510H-STD
In Stock
$ 128.99

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

$ 104.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 128.99

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

$ 104.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up

Introducing the BMW B46/B48 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 the BMW B46 and B48 engines, 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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WPC-Treated Performance Rod Bearing Service Kit - N20 / N26
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:36066264
Part#: N20-WPC-RBKT2
Ships in 1 Business Day
Sale - Save 8% $ 831.99

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

$ 766.05 USD
Free Shipping on orders $49 and up
Sale - Save 8%
$ 831.99

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

$ 766.05 USD
Free Shipping on orders $49 and up

If your engine has higher mileage, don't neglect rod bearing replacement! These bearings are sandwiched between the connecting rod and crankshaft journal and are prone to failure due to overheating, lack of lubrication, or general wear. Replace your rod bearings and prevent a spun bearing.

Starting with ACL’s high-performance bearing shells, our 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.

Kit includes

Turner Motorsport WPC-Treated Race Series Rod Bearing Shells (8) Hardware for Oil Pan & Oil Sump Oil filter Liqui-Moly Molygen 5W-40 (6L) Drain Plug Turner Motorsport Oil Reminder Sticker Oil pan gasket RedLine assembly lube (4 oz.)

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Elring Cylinder Head Bolt Set - BMW B46/B48 2.0L
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Elring - Corporate Logo
T#:44733255
Part#: 794.470
Special Order: No Guaranteed ETA
$ 83.99 USD
Free Shipping on orders $49 and up
$ 83.99 USD
Free Shipping on orders $49 and up
Cylinder head bolts feature a torque-to-yield design, meaning that they can only be used once. If you have to pull your cylinder head for any reason, be sure to pick up a set of cylinder head bolts to ensure your head is properly attached to the engine block. This kit includes all 10 replacement cylinder head bolts. Replaces BMW p/n 11128644675.
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Elring Cylinder Head Bolt Set - BMW N47 2.0L
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Elring - Corporate Logo
T#:45517828
Part#: 233.370
Special Order: No Guaranteed ETA
$ 58.99 USD
Free Shipping on orders $49 and up
BMW cylinder head bolts are almost always stretch bolts and should never be reused after removal. Reusing old bolts can lead to a weak seal between the cylinder head and engine block, allowing the head to lift and cause potentially catastrophic damage. Replace your old cylinder head bolts with these brand new Elring bolts to ensure your head is properly secured to prevent damage and keep your engine healthy. Replaces BMW # 11128513128
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