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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#: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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Sale - Save 25%
$ 188.99

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

$ 141.74 USD
Free Shipping

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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AMC - Corporate Logo
T#:222771
Part#: 11121707032C
In Stock
$ 1,322.99 USD
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$ 1,322.99 USD
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This replacement cylinder head for BMW M20B25 6 cylinder engine comes completely assembled with new valves, valve springs, valve guides and seals. Being assembled this cylinder head makes for a much quicker and easier job of installation. The camshaft is not included but is available separately.

This cylinder head is manufactured in Spain by Amadeo Marti Carbonell, a company that meets or exceeds the ISO 4000, ISO 9000 and TS-16949 standards so you can be assured of a quality part.BMW has discontinued this part so this is the only current source for M20 cylinder heads.

This item fits the following BMWs:
1988 E30 BMW 325e 325es
1987-1991 E30 BMW 325i 325ic 325is 325ix
1988 E28 BMW 528e
1989-1990 E34 BMW 525i
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AMC - Corporate Logo
T#:19419
Part#: 11121703637
Ships on Sep 22, 2026
$ 2,315.99 USD
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$ 2,315.99 USD
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This replacement cylinder head for BMW S52 S50 M52 6 cylinder engine comes completely assembled with new valves, valve springs, valve guides, valve seals and studs. Being assembled this cylinder head makes for a much quicker and easier job of installation. The camshaft is not included but is available separately.

This cylinder head is manufactured in Spain by Amadeo Marti Carbonell, a company that meets or exceeds the ISO 4000, ISO 9000 and TS-16949 standards so you can be assured of a quality part.

This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 328i 328is 328ic M3
1995 E34 BMW 525i
1997-1998 E39 BMW 528i
1996-1998 E36/7 BMW Z3 2.8
1998-2000 E36/7 BMW M Roadster M Coupe
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URO - Corporate Logo
T#:361970
Part#: 11141742042
In Stock
$ 72.75 USD
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$ 72.75 USD
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If your vehicle has started leaking coolant around the intake area and it is not the pipes, it is probably the valley pan.

This URO replacement has a high temperature and chemical resistant FKM Fluorocarbon Viton® rubber gasket to reduce the chance of leaks and increase the life of the gasket. This valley pan also features a gasket retention step to keep the gasket in place during installation and also reduce the chance of the gasket blowing out from pressure.

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URO - Corporate Logo
T#:8677205
Part#: 11377548388
In Stock
$ 137.99 USD
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$ 137.99 USD
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This new Valvetronic variable valve timing actuator works by adjusting the eccentric shaft, increasing or decreasing valve lift and duration for optimal performance. If your actuator has failed, you will notice a significant power and performance decrease and an engine service light illuminated on the dash. Replace your with this quality URO replacement to restore performance and get your BMW back on the road! Features: Guaranteed fitment High-strength materials withstand engine heat and vibration Manufactured to OE dimensions for proper clearances and alignment Matches OE specifications for proper timing at all engine speeds 24-Month Unlimited Mileage Warranty
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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
Free Shipping
Sale - Save 3%
$ 250.99

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

$ 243.46 USD
Free Shipping
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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URO - Corporate Logo
T#:7530051
Part#: 11367583208
In Stock
$ 201.99 USD
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$ 201.99 USD
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This timing chain camshaft gear controls the camshaft position and timing and is located toward the front of the engine. Located on the exhaust side of the engine at the front end of the exhaust camshaft. Sometimes changed when replacing the timing chain. T#34658 may also be required when servicing this part.
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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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URO - Corporate Logo
T#:389295
Part#: 11147507278
Ships in 1 Business Day
$ 90.99

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

$ 60.80 USD
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$ 60.80 USD
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If your vehicle has started leaking coolant around the intake area and it is not the pipes it is probably the valley pan. This valley pan gasket has been upgraded to a stronger Viton material for a longer life.
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ECS - Corporate Logo
T#:389729
Part#: 11241407493WPCKT
Ships on Sep 17, 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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URO - Corporate Logo
T#:338249
Part#: 11141439975R
In Stock
Starting at $ 300.67 USD
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Starting at $ 300.67 USD
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Has your BMW's with the N62 V8 engine developed a coolant leak at the front of the engine from the timing cover weep hole? If so the it is likely that the coolant transfer pipe seal, located below the intake manifold has developed a leak. Normally, replacing the seal on this pipe would require almost 40 hours of labor and involve removing the entire engine from the car, then removing the cylinder heads, and timing covers. With this new collapsible pipe this repair can be accomplished in under 10 hours! This solution will save you or your mechanic from a bunch of headaches and get your V8 back on the road leak free!

With more than 100 years in the industry, Elring is one of the oldest names in the European autoparts segment. Delivering OE-quality you can rest assured the job will be done right the first time. 

video: N62 Cooling Pipe Replacement


Supplement Gasket Kit Parts List

(click to expand)

BMW p/nQtyDescription

115317100481Rear Engine Block O-ring,

115175077171Heat Pipe w O-ring

115175085351Water Pump Gasket

115114399761Valley Pan Pipe Pump

111475072781Valley Pan w Gasket

116175211812Intake Manifold Gasket

071199035962Camshaft Adjuster O-ring

123114399881Alternator Feed Pipe

750il gasket kit deletes 11617521181 and 07119903596 and adds - 8 - 11617537999 profile gaskets



This item fits the following BMWs:
2004-2010 E60 BMW 545i 550i
2004-2010 E63 BMW 645ci 650i
2002-2008 E65 BMW 745i 745li 750i 750li
2004-2006 E53 BMW X5 4.4i X5 4.8is
2007-2013 E70 BMW X5 4.8i xDrive48i

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AMC - Corporate Logo
T#:383388
Part#: 11121703637
Special Order: No Guaranteed ETA
$ 1,631.99 USD
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$ 1,631.99 USD
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Bare head with guides and seats only


ECS - Corporate Logo
T#:585946
Part#: 11127531224WPC
In Stock
$ 916.99 USD
Free Shipping
$ 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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ECS - Corporate Logo
T#:585945
Part#: 11127550913WPC
In Stock
$ 898.99 USD
Free Shipping
$ 898.99 USD
Free Shipping
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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URO - Corporate Logo
T#:637193
Part#: 11367545862
Ships in 1 Business Day
$ 130.99 USD
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$ 130.99 USD
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ECS - Corporate Logo
T#:17073561
Part#: 11247620969WP3KT
Ships in 1-2 days
Sale - Save 10% $ 559.99

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

$ 503.93 USD
Free Shipping
Sale - Save 10%
$ 559.99

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

$ 503.93 USD
Free Shipping

ECS - Corporate Logo
T#:17073562
Part#: 11247620969WP4KT
Ships in 1-2 days
Sale - Save 10% $ 419.99

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

$ 377.95 USD
Free Shipping
Sale - Save 10%
$ 419.99

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

$ 377.95 USD
Free Shipping