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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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Cylinder Head - Complete - E30 325i, E34 525i, M20 engine

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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Cylinder Head - Complete - M52, S50, S52

T#:19419

Part#: 11121703637

Ships on Sep 15, 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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MINI R56 N18 Adjustment Unit - Outlet Cam

T#:8169510

Part#: 11367536085

In Stock

Sale - Save 25% $ 106.99

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

$ 79.99 USD

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Qty

Sale - Save 25%

$ 106.99

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

$ 79.99 USD

Add to Wish List

MINI R56 N18 Adjustment Unit - Outlet Cam is a crucial component for optimizing engine performance. This timing chain camshaft gear, which is the thicker gear positioned toward the front of the engine on the outlet side, plays a key role in the timing and operation of the engine. It is typically replaced when servicing or replacing the timing chain to ensure proper engine function and longevity. As an Original Equipment Supplier (OES) part, it guarantees the same quality and reliability as the factory-installed component.

Thicker Gear Design: Ensures robust performance and durability.
Optimal Positioning: Located toward the front of the engine on the outlet side for precise timing.
Replacement Component: Commonly changed during timing chain replacement to maintain engine performance.
OES Quality: Provides factory-level quality and reliability.

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