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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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Bav Auto Crankshaft Front Oil Seal Removal / Installer Tool - N54, N55
Bav Auto Crankshaft Front Oil Seal Removal / Installer Tool - N54, N5...
Bav Auto Tools - Corporate Logo
T#:580444
Part#: B8800139
Ships on Sep 1, 2026
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$ 193.79 USD
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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.
ECS M62TU Vanos Seal Rebuild Kit - E39, E38, E53
ECS M62TU Vanos Seal Rebuild Kit - E39, E38, E53
ECS - Corporate Logo
T#:396674
Part#: 017301ECS01
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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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OEM Head Bolt Set - M50 M52 S50 S52
OEM Head Bolt Set - M50 M52 S50 S52
Victor Reinz - Corporate Logo
T#:1551
Part#: 11121721938
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$ 20.94 USD
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Head Bolt Set for all M50 engines with a steel engine block.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.​

This item fits the following BMWs:
992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1991-1995 E34 BMW 525i
1997-1998 E39 BMW 528i
1998-2000 Z3 BMW M Roadster M Roadster
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WPC Treated Rod Bearing Set - M42, M44, M20, M50, M52, S50, S52, M54 Engines
WPC Treated Rod Bearing Set - M42, M44, M20, M50, M52, S50, S52, M54 ...
ECS - Corporate Logo
T#:395066
Part#: 11241284849WPC
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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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Bav Auto Crankshaft Rear Oil Seal Removal / Installer Tool - N51, N52 and N54
Bav Auto Crankshaft Rear Oil Seal Removal / Installer Tool - N51, N52...
Bav Auto Tools - Corporate Logo
T#:580412
Part#: B8800104
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$ 140.59 USD
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For removal and installation of the rear crankshaft seal on BMW N51, N52 and N54 engines.
Bav Auto Intermediate Lever Valve Spring Compressor - N20/26 N55
Bav Auto Intermediate Lever Valve Spring Compressor - N20/26 N55 ...
Bav Auto Tools - Corporate Logo
T#:580431
Part#: B8800124
Ships on Sep 1, 2026
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$ 152.14 USD
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For installation and removal of pressure springs on intermediate levers of valve train. Ensures quick, easy and safe handling of these high force springs.
Bavarian Autosport Crankshaft Holding Tool - BMW
Bavarian Autosport Crankshaft Holding Tool - BMW
Bav Auto Tools - Corporate Logo
T#:580450
Part#: B8800145
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$ 66.29 USD
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Makes removal of crankshaft hub nut/bolt much easier. A must-have for replacing timing chains, oil pump chains, leaking crankshaft seals and more.
Bav Auto Crankshaft Pulley Holding Tool
Bav Auto Crankshaft Pulley Holding Tool
Bav Auto Tools - Corporate Logo
T#:580404
Part#: B8800094
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$ 162.89 USD
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Bav Auto's Crankshaft Pulley Holding Tool enables you to remove your crankshaft nut/bolt with ease - we recommend this tool if you intend on replacing timing chains, oil pump chains, leaking crankshaft seals, etc.
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WPC Treated Crank Bearing Set
WPC Treated Crank Bearing Set
ECS - Corporate Logo
T#:585720
Part#: 11211706847WPCKT
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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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Rein Exhaust Valve - Sold Each - E28, E30, E34
Rein Exhaust Valve - Sold Each - E28, E30, E34
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:584424
Part#: 11341708896
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$ 16.65 USD
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Replace your worn valves
WPC Treated Genuine BMW Bearings - Single Bearing
WPC Treated Genuine BMW Bearings - Single Bearing
ECS - Corporate Logo
T#:585808
Part#: 11217849238WPCKT
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$ 43.08 USD
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WPC Treated Genuine BMW Bearings - Single Bearing
WPC Treated Genuine BMW Bearings - Single Bearing
ECS - Corporate Logo
T#:585807
Part#: 11217849234WPC
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$ 39.63 USD
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WPC Treated Genuine BMW Bearings - Single Bearing
WPC Treated Genuine BMW Bearings - Single Bearing
ECS - Corporate Logo
T#:5470995
Part#: 11247617339WPC
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$ 42.63 USD
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CP Carrillo PRO-H Performance Connecting Rod Set - w/ 3/8" WMC Bolts - BMW B58 3.0L (Gen1/2/3)
CP Carrillo PRO-H Performance Connecting Rod Set - w/ 3/8" WMC Bolts ...
CP Carrillo - Corporate Logo
T#:49648346
Part#: SCR13492-6
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CP Carrillo's PRO-H connecting rods offer exceptional strength and durability for use in high-performance racing engines, capable of withstanding extreme, abusive forces. These rods are made from a proprietary alloy called Carrilloy and utilize an H-beam design for lower weight without compromising strength. This connecting rod set also includes WMC bolts, made from H11 tool steel and rated to 220 KSI, which are good for 15-18 torque cycles.
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CP Carrillo PRO-H Performance Connecting Rod Set - w/ 3/8" CARR Bolts - BMW B58 3.0L (Gen1/2/3)
CP Carrillo PRO-H Performance Connecting Rod Set - w/ 3/8" CARR Bolts...
CP Carrillo - Corporate Logo
T#:50521388
Part#: SCR13034-6
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$ 2,189.99 USD
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CP Carrillo's PRO-H connecting rods offer exceptional strength and durability for use in high-performance racing engines, capable of withstanding extreme, abusive forces. These rods are made from a proprietary alloy called Carrilloy and utilize an H-beam design for lower weight without compromising strength. This connecting rod set also includes CARR bolts, a multi-phase bolt rated to 285 KSI, which are good for unlimited torque cycles if not overstretched or overheated.
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SuperTech Dual Valve Spring Upgrade Kit w/ Steel Retainers - 67lbs - BMW M50 M52 M54 S52
SuperTech Dual Valve Spring Upgrade Kit w/ Steel Retainers - 67lbs - ...
Supertech - Corporate Logo
T#:51426477
Part#: SPRKH100DRBMST
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$ 833.99 USD
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Crafted from premium Superclean Chrome Silicon Vanadium Steel alloy, these valve springs offer exceptional performance and durability even at high RPMs. CAD engineering ensures that the wire stress levels remain within defined limits for long-lasting durability, even under extreme racing conditions. Advanced computer software allows Supertech to meticulously control harmonics, ensuring optimal performance. Manufactured with high-quality military-certified Steel, the retainers are CNC machined to provide a precise fit, guaranteeing longevity and reliability.
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WPC Treated Rod Bearings Set - 4 Cylinder
WPC Treated Rod Bearings Set - 4 Cylinder
ECS - Corporate Logo
T#:17073561
Part#: 11247620969WP3KT
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WPC Treated Rod Bearings Set
WPC Treated Rod Bearings Set
ECS - Corporate Logo
T#:13299333
Part#: 11248053291WP2KT
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$ 896.16 USD
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WPC Treated Rod Bearings Set - 3 Cylinder
WPC Treated Rod Bearings Set - 3 Cylinder
ECS - Corporate Logo
T#:17073562
Part#: 11247620969WP4KT
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$ 377.95 USD
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WPC Treated Rod Bearings Set
WPC Treated Rod Bearings Set
ECS - Corporate Logo
T#:13299336
Part#: 11247620969WP2KT
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$ 755.89 USD
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WPC Treated Rod Bearings Set
WPC Treated Rod Bearings Set
ECS - Corporate Logo
T#:5484815
Part#: 11248053291WPCKT
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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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Titanium Retainers - Set Of 8 - BMW B48 - Intake Side
Titanium Retainers - Set Of 8 - BMW B48 - Intake Side
Supertech - Corporate Logo
T#:54388410
Part#: RET-BMB48-TI-8
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By minimizing moving weight, these retainers help prevent valve float at extended RPM ranges, ensuring your engine maintains precise timing and peak power delivery under the most demanding track conditions.
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Supertech Intake Valve - Set Of 8 - Head 32.0mm (+1.8)
Supertech Intake Valve - Set Of 8 - Head 32.0mm (+1.8)
Supertech - Corporate Logo
T#:54388512
Part#: MCIVN-1008T-8
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Supertech Performance brings decades of racing experience to their valvetrain components. By utilizing state-of-the-art manufacturing processes and rigorous testing, these valves provide the perfect balance of lightweight design, high-flow geometry, and bulletproof durability needed for forced induction, nitrous, or high-revving naturally aspirated builds.
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Supertech Forged I-Beam Connecting Rod Kit - BMW B58 3.0L
Supertech Forged I-Beam Connecting Rod Kit - BMW B58 3.0L
Supertech - Corporate Logo
T#:57086686
Part#: CRBMB58-I148.3-6
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Supertech connecting rods for BMW B58B30 applications are designed for racing reliability and high-RPM use, rated for up to 1600 hp. Forged and machined from premium high-strength alloy with ARP fasteners included.
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5mm Single groove valve lock conversion (SET OF 16)
5mm Single groove valve lock conversion (SET OF 16)
Supertech - Corporate Logo
T#:51356057
Part#: KPR-5.0-7S-16
Ships on Sep 4, 2026
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WPC Treated Main Bearing Set
WPC Treated Main Bearing Set
ECS - Corporate Logo
T#:13299340
Part#: 11217849234KT2
Ships on Sep 17, 2026
Sale - Save 5% $ 888.86

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$ 844.42 USD
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