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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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WPC Treated Rod Bearing Set - M42, M44, M20, M50, M52, S50, S52, M54 ...
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ECS - Corporate Logo
T#:395066
Part#: 11241284849WPC
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06-13-2026

$ 141.74 USD
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$ 188.99

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These WPC-treated bearings are the best we have seen! WPC is a shot-peening treatment at a microscopic level. It's perfect for sensitive surfaces like bearings. The WPC treatment removes imperfections and high spots, while creating a surface that retains oil better than the original surface. This greatly reduces friction. The bearings in this kit are original equipment KS bearings that are sent to WPC for treatment. The treated bearings are stronger with less metal fatigue and less friction than buying off-the-shelf bearings from the dealer.

This item fits the following BMWs: 
1984-1991 E30 BMW 318i 318is 318ic 325e 325es 325i 325ic 325is 325ix 
1992-1998 E36 BMW 318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3 
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
1982-1988 E28 BMW 528e
1989-1995 E34 BMW 525i
1997-2003 E39 BMW 525i 528i 530i
2004-2005 E60 BMW 525i 530i 
2004-2006 E83 BMW X3 2.5i X3 3.0i 
2000-2006 E53 BMW X5 3.0i 
1997-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M Roadster M Coupe 
2003-2005 Z4 BMW Z4 2.5i Z4 3.0i 

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ECS M62TU Vanos Seal Rebuild Kit - E39, E38, E53
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ECS - Corporate Logo
T#:396674
Part#: 017301ECS01
Ships on Jul 29, 2026
Sale - Save 25% $ 67.99

This product was last offered at the strikethrough price on
06-13-2026

$ 50.99 USD
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$ 67.99

This product was last offered at the strikethrough price on
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$ 50.99 USD
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If you're not sure if your Vanos seals are bad then the only question you need to answer is if you've replaced them. Every unit from the factory came with the same failure prone o-rings and seals, even the re-manufactured units you can still get today. The only real fix is by replacing the seals and o-rings with material that is built to last in the oiled, extreme temperature environment found in these kits. 

A premium product replacement with easy to follow instructions makes rebuilding your Vanos unit a must. Even thought the power loss is barely felt it's the opposite result once you replace the seals, every car that gets rebuilt ends up wowing the customer and all of them saying they didn't realize what they lost. 

There are a number of symptoms that will plague your car as a result of these failing seals such as erratic idle, engine hesitation, stalling, and increased fuel consumption to name a few. If you've been chasing down any of these symptoms with no fix then this could be your issue.

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Ferrea Performance Intake Valve - Stock Size
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Ferrea - Corporate Logo
T#:583445
Part#: F1550P
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$ 34.99 USD
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Ferrea Performance Exhaust Valve - Stock Size
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Ferrea - Corporate Logo
T#:583444
Part#: F1552P
In Stock
$ 34.99 USD
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WPC Treated Crank Bearing Set
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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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$ 250.99

This product was last offered at the strikethrough price on
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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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E60 M5/E63 M6 WPC Treated S85 Rod Bearings (Set)
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ECS - Corporate Logo
T#:388759
Part#: 11247841702WPCKT
In Stock
$ 1,086.99 USD
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$ 1,086.99 USD
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These WPC-treated bearings are the best we have seen for the S85. WPC is a shot-peening treatment at a microscopic level. It's perfect for sensitive surfaces like bearings. The WPC treatment removes imperfections and high spots, while creating a surface that retains oil better than the original surface. This greatly reduces friction. The bearings in this kit are factory BMW bearings that are sent to WPC for treatment. The treated bearings are stronger with less metal fatigue and less friction than buying off-the-shelf bearings from the dealer.

Price is for a complete set of S85 upgraded rod bearings.

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E90/E92 M3 WPC Treated S65 Rod Bearings (Set)
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ECS - Corporate Logo
T#:388756
Part#: 11247841703WPCKT
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$ 835.99 USD
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$ 835.99 USD
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Enhance Your BMW Engine with WPC-Treated OEM Connecting Rod Bearings

Upgrade your BMW engine performance by choosing WPC-treated OEM connecting rod bearings, surpassing the advantages of Original BMW bearings. WPC surface treatment is renowned for its ability to reduce friction and enhance component strength. Through ultra-fine particle blasting at high speeds, this treatment ensures smoother and stronger surfaces by utilizing thermal discharge. Combatting the critical enemies of heat and friction, WPC-treated bearings offer superior performance for your engine build or rod bearing service.

Key Benefits:

  • WPC-treated OEM connecting rod bearings for enhanced engine performance
  • Reduction in friction and addition of strength through surface treatment
  • Ultra-fine particle blasting results in smoother and stronger surfaces
  • Mitigates heat and friction, critical for high-performance engines
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WPC Treated Main Bearing Set - Standard Size - E30 M3 2.3 Liter ...
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ECS - Corporate Logo
T#:13299324
Part#: 11210666110WP2KT
In Stock
$ 174.99 USD
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BMW N54 N55 WPC Treated Genuine BMW Rod Bearing Set
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ECS - Corporate Logo
T#:585258
Part#: 11247628034WPCKT
Ships in 1 day
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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$ 803.88

This product was last offered at the strikethrough price on
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$ 779.76 USD
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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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WPC Treated Genuine BMW Rod Bearings - Full Set
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ECS - Corporate Logo
T#:389729
Part#: 11241407493WPCKT
Ships in 1 day
$ 1,231.84 USD
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$ 1,231.84 USD
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These WPC-treated bearings are the best we have seen for the S62. WPC is a shot-peening treatment at a microscopic level. It's perfect for sensitive surfaces like bearings. The WPC treatment removes imperfections and high spots, while creating a surface that retains oil better than the original surface. This greatly reduces friction. The bearings in this kit are factory BMW bearings that are sent to WPC for treatment. The treated bearings are stronger with less metal fatigue and less friction than buying off-the-shelf bearings from the dealer.

Price is for a complete set of S62 upgraded rod bearings.

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ECS M5x Single VANOS Rebuild Kit - E36, E39, Z3
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ECS - Corporate Logo
T#:394295
Part#: 012016ECS
In Stock at Vendor
Sale - Save 13% $ 307.99

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

Starting at $ 269.21 USD
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Sale - Save 13%
$ 307.99

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

Starting at $ 269.21 USD
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If you're not sure if your VANOS seals are bad then the only question you need to answer is if you've replaced them. Every unit from the factory came with the same failure prone o-rings and seals, even the re-manufactured units you can still get today. The only real fix is by replacing the seals and o-rings with material that is built to last in the oiled, extreme temperature environment found in these kits. 

A premium product replacement with easy to follow instructions makes rebuilding your VANOS unit a must. Even though the power loss is barely felt it's the opposite result once you replace the seals, every car that gets rebuilt ends up wowing the customer and all of them saying they didn't realize what they lost. 

There are a number of symptoms that will plague your car as a result of these failing seals such as erratic idle, engine hesitation, stalling, and increased fuel consumption to name a few. If you've been chasing down any of these symptoms with no fix then this could be your issue.

While you're replacing the seals in your VANOS unit it a good time to install anti-rattle spacers to tighten up the gaps in your stock assembly and get rid of that noisy VANOS clatter.

This item fits the following BMWs: 
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3 
1997-1998 E39 BMW 528i 
1997-1998 Z3 BMW Z3 2.8 
1998-2000 Z3 BMW M Roadster M Coupe

 

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E36 325, 328 & M3 Ferrea High Performance Valve Spring Set
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Ferrea - Corporate Logo
T#:439
Part#: S10049-24
Back Ordered
$ 817.20 USD
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$ 817.20 USD
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Ferrea valve springs are developed from high strength alloys, including premium grade chrome silicone steel These springs are manufactured with state-of-the-art equipment. Ferrea springs are heat-treated and stress-relieved, which dramatically increases the spring's life. Strict quality control procedures and cycle testing ensures consistency from batch to batch. Ferrea valve springs provide the stability needed for high lift, high rpm racing and street car engines. Kit includes a set of 24 springs. MUST be used with the Ferrea Spring Seat and Titanium Retainers. See links below. 

https://www.turnermotorsport.com/e/p-163-e36-325-328-m3-ferrea-spring-seat-set/ 

https://www.turnermotorsport.com/e/p-31-e36-325-328-m3-ferrea-titanium-retainer-set/



This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1991-1995 E34 BMW 525i

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E36 325, 328 M3 Ferrea Spring Seat Set
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Ferrea - Corporate Logo
T#:163
Part#: SL1021-24
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$ 118.80 USD
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$ 118.80 USD
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E36 325, 328 M3 Ferrea Spring Seat Set includes 24 seats. MUST be uses with the Ferrea valve springs. Recommended to be used with the Ferrea Competition Plus Big Valves and Ferrea Titanium Retainers. See links below.

The goal at Ferrea is to create the finest valves and bearings money can buy. With a staggering array of applications for virtually every production engine in existence both gas and diesel Ferrea has the parts you need to finish your next engine project with confidence.

This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1991-1995 E34 BMW 525i
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E36 325, 328 M3 Ferrea Titanium Retainer Set
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Ferrea - Corporate Logo
T#:31
Part#: E11025-24
Back Ordered
$ 7,199.76 USD
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$ 7,199.76 USD
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E36 325, 328 M3 Ferrea Titanium Retainer Set - set of 24. Recommended to be used with the Ferrea Competition Plus Big Valves. MUST be used with the Ferrea high-performance valve spring and seat kit. See links below.

The goal at Ferrea is to create the finest valves and bearings money can buy. With a staggering array of applications for virtually every production engine in existence both gas and diesel, Ferrea has the parts you need to finish your next engine project with confidence.

This item fits the following BMWs:
1992-1998 E36 BMW 325i 325is 325ic 328i 328is 328ic M3
1991-1995 E34 BMW 525i
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WPC Treated Cam Bearing Ledge - Exhaust - BMW N52 2.0L N54 N55 3.0L ...
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ECS - Corporate Logo
T#:585946
Part#: 11127531224WPC
In Stock
$ 916.99 USD
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$ 916.99 USD
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A common issue on N54 motors is cam bearing ledge scoring due to lack of lubrication, and if left unattended can cause damage to the camshaft and increase oil consumption. These WPC-treated cam bearing ledges help prevent lubrication issues to ensure no scoring occurs on the bearing ledge or camshaft. 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.
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WPC Treated Cam Bearing Ledge Kit - BMW N54 3.0L
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ECS - Corporate Logo
T#:14651263
Part#: 11127550913WKT
In Stock
$ 1,815.99 USD
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A common issue on N54 motors is cam bearing ledges scoring due to lack of lubrication, and if left unattended can cause damage to the camshafts and increase oil consumption. These WPC-treated cam bearing ledges help prevent lubrication issues to ensure no scoring occurs on the bearing ledge or camshaft. 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.
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WPC Treated Cam Bearing Ledge - Intake - BMW N54 3.0L
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ECS - Corporate Logo
T#:585945
Part#: 11127550913WPC
In Stock
$ 898.99 USD
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$ 898.99 USD
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A common issue on N54 motors is cam bearing ledge scoring due to lack of lubrication, and if left unattended can cause damage to the camshaft and increase oil consumption. These WPC-treated cam bearing ledges help prevent lubrication issues to ensure no scoring occurs on the bearing ledge or camshaft. 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.
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WPC Treated Genuine BMW Bearings - Single Bearing
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ECS - Corporate Logo
T#:585807
Part#: 11217849234WPC
In Stock
Sale - Save 35% $ 60.99

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

$ 39.63 USD
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Sale - Save 35%
$ 60.99

This product was last offered at the strikethrough price on
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$ 39.63 USD
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WPC Treated Genuine BMW Bearings - Single Bearing
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ECS - Corporate Logo
T#:585808
Part#: 11217849238WPCKT
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This product was last offered at the strikethrough price on
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$ 43.08 USD
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$ 60.99

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$ 43.08 USD
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WPC Treated Genuine BMW Bearings - Single Bearing
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ECS - Corporate Logo
T#:5470995
Part#: 11247617339WPC
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This product was last offered at the strikethrough price on
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$ 42.63 USD
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$ 42.63 USD

Ferrea High Performance Valve Kit - B58
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Ferrea - Corporate Logo
T#:29035336
Part#: FER-HPVK-B58-T28
Ships in 3 Business Days
$ 1,059.99 USD
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The BMW B58 engine can significantly benefit from the high-performance Ferrea valve kit, featuring the renowned Ferrea Competition Plus Valves. Known as the industry’s most dependable extreme-duty valves, these valves are crafted using special aerospace-grade alloys, including the high tensile strength EV8-Z18. To ensure unparalleled quality, an exclusive two-step slow forging process is utilized, promoting optimal grain flow and minimizing material structure damage. Additionally, the valves undergo a rigorous 48-hour heat treatment and stress-relieving process, crucial for maintaining their molecular integrity. The final touch is the application of avionics-quality hard chrome and a specially hardened tip, ensuring exceptional durability and reliability.
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Ferrea High Performance Valve Kit - B58
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Ferrea - Corporate Logo
T#:29035337
Part#: FER-HPVK-B58-T29
Ships in 3 Business Days
$ 929.00 USD
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The BMW B58 engine can significantly benefit from the high-performance Ferrea valve kit, featuring the renowned Ferrea Competition Plus Valves. Known as the industry’s most dependable extreme-duty valves, these valves are crafted using special aerospace-grade alloys, including the high tensile strength EV8-Z18. To ensure unparalleled quality, an exclusive two-step slow forging process is utilized, promoting optimal grain flow and minimizing material structure damage. Additionally, the valves undergo a rigorous 48-hour heat treatment and stress-relieving process, crucial for maintaining their molecular integrity. The final touch is the application of avionics-quality hard chrome and a specially hardened tip, ensuring exceptional durability and reliability.
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WPC Treated Rod Bearings Set - 3 Cylinder
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ECS - Corporate Logo
T#:17073562
Part#: 11247620969WP4KT
Ships on Aug 3, 2026
Sale - Save 10% $ 419.99

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$ 377.95 USD
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WPC Treated Rod Bearings Set - 4 Cylinder
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ECS - Corporate Logo
T#:17073561
Part#: 11247620969WP3KT
Ships on Aug 3, 2026
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WPC Treated Rod Bearings Set
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ECS - Corporate Logo
T#:13299333
Part#: 11248053291WP2KT
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Sale - Save 3% $ 923.99

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$ 896.16 USD
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$ 896.16 USD
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WPC Treated Rod Bearings Set
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ECS - Corporate Logo
T#:13299336
Part#: 11247620969WP2KT
Ships on Aug 3, 2026
Sale - Save 10% $ 839.99

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$ 755.89 USD
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$ 755.89 USD
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WPC Treated Rod Bearings Set
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ECS - Corporate Logo
T#:5484815
Part#: 11248053291WPCKT
Ships in 1 day
Sale - Save 3% $ 923.99

This product was last offered at the strikethrough price on
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$ 896.16 USD
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$ 923.99

This product was last offered at the strikethrough price on
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$ 896.16 USD
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What's better than using Original BMW connecting rod bearings in your next engine build? WPC-treated OEM 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 rod bearing service!
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WPC Treated Main Bearing Set
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ECS - Corporate Logo
T#:13299340
Part#: 11217849234KT2
Ships on Aug 11, 2026
Sale - Save 5% $ 888.86

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

$ 844.42 USD
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$ 888.86

This product was last offered at the strikethrough price on
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$ 844.42 USD