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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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Mahle - Corporate Logo
T#:598529
Part#: 11251437077
Ships in 2 Business Days
$ 37.99 USD
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Ensure optimal engine performance in your BMW M50 M52 Engines with Turner Motorsport's Mahle Piston Ring Set. Over time, worn piston rings can lead to power loss, increased oil consumption, and white smoke from the tailpipe. When rebuilding your BMW's engine, replacing the piston rings is essential for restoring power and efficiency. Each set is priced individually, with six sets required for complete engine overhaul.

Key Benefits:

  • Restores engine power and efficiency
  • Reduces oil consumption
  • Prevents white smoke from the tailpipe
  • Compatible with M50 M52 Engines
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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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$ 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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ECS - Corporate Logo
T#:395066
Part#: 11241284849WPC
In Stock
Sale - Save 25% $ 188.99

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

$ 141.74 USD
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$ 188.99

This product was last offered at the strikethrough price on
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$ 141.74 USD
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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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Bavarian Autosport - Corporate Logo
T#:17871154
Part#: 11311432177
In Stock
Sale - Save 20% $ 27.99

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

$ 22.39 USD
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Sale - Save 20%
$ 27.99

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

$ 22.39 USD
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Mahle - Corporate Logo
T#:589332
Part#: 11257566479
Ships in 3 Business Days
$ 28.99

This product was last offered at the strikethrough price on
07-23-2026

$ 24.99 USD
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$ 24.99 USD
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Stock-Size Piston Ring Set for Engine Head Repair

When it comes to engine head repair or rebuilding, this piston ring set is the perfect choice. Designed to be of stock size, it ensures a precise fit and reliable performance.

Key Details:

  • One set of piston rings is needed for each piston.
  • If your engine head contains four pistons, you'll require four sets to complete the repair.
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Mahle - Corporate Logo
T#:13760053
Part#: 081PI00110000
Ships on Sep 1, 2026
$ 187.99 USD
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MINI N18 1.6L Piston - (0 Size) Priced Each 081 PI 00110 000

A crucial component for Mini vehicles, ensuring optimal engine performance and reliability. Engineered with precision and durability, this piston is designed to withstand the demands of the N18 1.6L engine.

  • Genuine Mini quality guarantees reliability and longevity
  • Precision engineering ensures perfect fit and compatibility
  • Enhances engine performance for a smooth and efficient operation
  • Priced affordably for cost-effective maintenance
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Bavarian Autosport - Corporate Logo
T#:17871158
Part#: 11367583208
In Stock
Sale - Save 20% $ 199.99

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

$ 159.99 USD
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Sale - Save 20%
$ 199.99

This product was last offered at the strikethrough price on
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$ 159.99 USD
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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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$ 243.46 USD
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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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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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ECS - Corporate Logo
T#:389729
Part#: 11241407493WPCKT
Ships on Sep 10, 2026
$ 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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Bavarian Autosport - Corporate Logo
T#:639826
Part#: 13627525015
Special Order: No Guaranteed ETA
$ 67.99 USD
Free Shipping on orders $49 and up
This crankshaft position sensor provides the ECU with the engine speed signal. It is mounted in either the engine block or the bell housing of the transmission on most cars. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.
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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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Bavarian Autosport - Corporate Logo
T#:17871157
Part#: 11367524954
In Stock
Sale - Save 20% $ 5.99

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

$ 4.79 USD
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Sale - Save 20%
$ 5.99

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

$ 4.79 USD
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Holds the camshaft gear to the camshaft, measures M10X1X94.
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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ECS - Corporate Logo
T#:14651263
Part#: 11127550913WKT
In Stock
$ 1,815.99 USD
Free Shipping on orders $49 and up
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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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
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Sale - Save 29%
$ 60.99

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

$ 43.08 USD
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Osvat - Corporate Logo
T#:1196099
Part#: 11341706631
In Stock
$ 12.99

This product was last offered at the strikethrough price on
06-22-2026

$ 10.99 USD
Limited Qty Sale
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$ 12.99

This product was last offered at the strikethrough price on
06-22-2026

$ 10.99 USD
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Standard replacement intake valve

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
05-03-2026

$ 39.63 USD
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ECS - Corporate Logo
T#:5470995
Part#: 11247617339WPC
In Stock
Sale - Save 31% $ 61.99

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

$ 42.63 USD
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This product was last offered at the strikethrough price on
05-03-2026

$ 42.63 USD

Osvat - Corporate Logo
T#:596779
Part#: 11341267721
Ships in 3 Business Days
$ 13.99

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

$ 8.99 USD
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$ 8.99 USD
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Replacement intake valve 40.0/6.97MM

Osvat - Corporate Logo
T#:1196100
Part#: 11341708896
In Stock at Vendor
$ 35.98 USD
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Replace your worn valves
ECS - Corporate Logo
T#:17073561
Part#: 11247620969WP3KT
Ships on Sep 10, 2026
Sale - Save 10% $ 559.99

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

$ 503.93 USD
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ECS - Corporate Logo
T#:13299333
Part#: 11248053291WP2KT
Ships on Sep 10, 2026
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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ECS - Corporate Logo
T#:17073562
Part#: 11247620969WP4KT
Ships on Sep 10, 2026
Sale - Save 10% $ 419.99

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

$ 377.95 USD
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ECS - Corporate Logo
T#:13299336
Part#: 11247620969WP2KT
Ships on Sep 10, 2026
Sale - Save 10% $ 839.99

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$ 755.89 USD
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ECS - Corporate Logo
T#:5484815
Part#: 11248053291WPCKT
Ships on Sep 10, 2026
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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$ 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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Mahle - Corporate Logo
T#:13760050
Part#: 081PI00104001
Ships on Sep 1, 2026
$ 187.99 USD
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MINI N12 N16 1.6L Piston W/ Rings - ( +0.25 Size )

A high-quality piston replacement kit designed for MINI vehicles equipped with the N12 or N16 1.6L engine. Engineered to precise specifications, this piston kit includes rings and is oversized by 0.25 to accommodate engine wear. Its durable construction ensures reliable performance and longevity, while the included rings provide proper sealing for optimal engine compression. Trust this piston kit to restore engine performance and reliability in your MINI vehicle.

  • High-quality piston replacement kit for MINI vehicles
  • Designed for N12 or N16 1.6L engine
  • Oversized by 0.25 to accommodate engine wear
  • Durable construction for reliable performance
  • Included rings provide proper sealing for optimal engine compression
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Mahle - Corporate Logo
T#:13760051
Part#: 081PI00104002
Ships on Sep 1, 2026
$ 203.99 USD
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MINI N12 N16 1.6L Piston W/ Rings - ( +0.50 Size ) Priced Each 081 PI 00104 002 offers a premium replacement option for Mini enthusiasts seeking reliable engine performance. Crafted with precision and designed to OEM specifications, these pistons with rings ensure optimal combustion and engine efficiency. Upgrade your MINI N12 or N16 1.6L engine with these pistons for enhanced reliability and performance.

  • Premium replacement option for MINI engines
  • Precision-crafted with OEM specifications
  • Ensures optimal combustion and engine efficiency
  • Compatible with MINI N12 and N16 1.6L engines
  • Enhances reliability and performance
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ECS - Corporate Logo
T#:13299340
Part#: 11217849234KT2
Ships on Sep 18, 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