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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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ECS - Corporate Logo
T#:396674
Part#: 017301ECS01
In Stock
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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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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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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Bav Auto Tools - Corporate Logo
T#:580450
Part#: B8800145
In Stock
Sale - Save 15% $ 77.99

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

$ 66.29 USD
Free Shipping on orders $49 and up
Sale - Save 15%
$ 77.99

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

$ 66.29 USD
Free Shipping on orders $49 and up
Makes removal of crankshaft hub nut/bolt much easier. A must-have for replacing timing chains, oil pump chains, leaking crankshaft seals and more.
ECS - Corporate Logo
T#:585808
Part#: 11217849238WPCKT
In Stock
Sale - Save 29% $ 60.99

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

$ 43.08 USD
Free Shipping on orders $49 and up
Sale - Save 29%
$ 60.99

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

$ 43.08 USD
Free Shipping on orders $49 and up

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
Free Shipping on orders $49 and up
Sale - Save 35%
$ 60.99

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

$ 39.63 USD
Free Shipping on orders $49 and up

ECS - Corporate Logo
T#:13299333
Part#: 11248053291WP2KT
Ships in 1-2 days
Sale - Save 3% $ 923.99

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

$ 896.16 USD
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Sale - Save 3%
$ 923.99

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

$ 896.16 USD
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ECS - Corporate Logo
T#:13299336
Part#: 11247620969WP2KT
Ships on Sep 10, 2026
Sale - Save 10% $ 839.99

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

$ 755.89 USD
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Sale - Save 10%
$ 839.99

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

$ 755.89 USD
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ECS - Corporate Logo
T#:5484815
Part#: 11248053291WPCKT
Ships in 1-2 days
Sale - Save 3% $ 923.99

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

$ 896.16 USD
Free Shipping on orders $49 and up
Sale - Save 3%
$ 923.99

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

$ 896.16 USD
Free Shipping on orders $49 and up
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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Cylinder Head Bolt - Set Of 14
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Elring - Corporate Logo
T#:15247124
Part#: 794.480
Special Order: No Guaranteed ETA
Sale - Save 5% $ 88.99

This product was last offered at the strikethrough price on
08-14-2026

$ 84.54 USD
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Sale - Save 5%
$ 88.99

This product was last offered at the strikethrough price on
08-14-2026

$ 84.54 USD
Free Shipping on orders $49 and up

Elring - Corporate Logo
T#:45517828
Part#: 233.370
Special Order: No Guaranteed ETA
Sale - Save 5% $ 58.99

This product was last offered at the strikethrough price on
08-14-2026

$ 56.04 USD
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Sale - Save 5%
$ 58.99

This product was last offered at the strikethrough price on
08-14-2026

$ 56.04 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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Elring - Corporate Logo
T#:45483601
Part#: 802.700
Special Order: No Guaranteed ETA
Sale - Save 5% $ 42.99

This product was last offered at the strikethrough price on
08-14-2026

$ 40.84 USD
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Sale - Save 5%
$ 42.99

This product was last offered at the strikethrough price on
08-14-2026

$ 40.84 USD
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BMW Cylinder Head Bolt - Priced Each - M10 1.8L - Partnumber 11120621144
Elring - Corporate Logo
T#:44733255
Part#: 794.470
Special Order: No Guaranteed ETA
Sale - Save 3% $ 83.99

This product was last offered at the strikethrough price on
08-14-2026

$ 81.10 USD
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Sale - Save 3%
$ 83.99

This product was last offered at the strikethrough price on
08-14-2026

$ 81.10 USD
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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 - Corporate Logo
T#:44767341
Part#: 233.380
Special Order: No Guaranteed ETA
Sale - Save 3% $ 59.99

This product was last offered at the strikethrough price on
08-14-2026

$ 57.95 USD
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Sale - Save 3%
$ 59.99

This product was last offered at the strikethrough price on
08-14-2026

$ 57.95 USD
Free Shipping on orders $49 and up
Cylinder head bolts need to be replaced after removal. Once a bolt is torqued down, you're unable to reuse it. This set of Elring cylinder head bolts is a great option to reattach your head to the block, without paying the markup for Genuine BMW parts. Replaces BMW p/n 11128513130, 11127812925, & 11128511621
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Cylinder Head Bolt - Set of 10
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Elring - Corporate Logo
T#:27171911
Part#: 11128644674
Back Ordered
Sale - Save 3% $ 85.99

This product was last offered at the strikethrough price on
08-14-2026

$ 83.26 USD
Free Shipping on orders $49 and up
Sale - Save 3%
$ 85.99

This product was last offered at the strikethrough price on
08-14-2026

$ 83.26 USD
Free Shipping on orders $49 and up
Features robust steel construction engineered to handle the high heat and extreme cylinder pressures of turbocharged applications.