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BMW Internal Engine Parts for BMW 3 Series E30 (1984-1991)

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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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King Performance BMW S54 Main Bearings - Std.

T#:25706115

Part#: MB7039AM

In Stock

$ 169.99 USD

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$ 169.99 USD

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Performance Rod Bearing Set - Standard Size

T#:4840520

Part#: CR6640XP

In Stock at Vendor

$ 163.99

This product was last offered at the strikethrough price on
05-22-2026

$ 148.99 USD

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$ 148.99 USD

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These King Performance Series bearings are recommended for performance applications. These bearings are designed for aftermarket gasoline or diesel engine rebuilding and performance engines with OE or upgraded crankshafts. These King Performance Series bearings have an improved crankshaft finish for reducing microscopic ferrite peaks on improperly ground or polished nodular cast iron crankshafts. The bearings feature improved oil clearance to reduce wear and increase engine life, which in turn reduces operating noise, vibration, and excess oil flow.

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Cat Cams Sport Camshaft set 269/269 10.00mm - E30 318i E36 318i ...

T#:578594

Part#: 1301413

In Stock

$ 1,051.99 USD

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$ 1,051.99 USD

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Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is.

Hella Crankshaft Bearing Set - Standard Size - 55.0mm

T#:27638781

Part#: 11210666100

In Stock at Vendor

$ 143.99

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

$ 139.99 USD

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$ 139.99 USD

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Often called main bearings, crankshaft bearing shells sit between the rotating assembly and the engine block. They allow the crankshaft to rotate freely, but are prone to wear from deterioration and lack of lubrication.

This complete set consists of nine bearings, enough to fill each journal.

If you're overhauling your M10, choose Hella crankshaft-bearing shells for a lasting solution.

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King Performance BMW S54 Main Bearings - .25 Oversize

T#:25706120

Part#: MB7039AM0.25

Ships in 6 Business Days

$ 178.99 USD

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$ 178.99 USD

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Replace your worn out OE main bearings with King's .25 Oversize Performance S54 Main Bearing Set!

Cat cams Sport Camshaft set - 279/275 11.45mm/10.95mm lift - E30 M3 ...

T#:578578

Part#: 1300657

Special Order: No Guaranteed ETA

$ 933.99 USD

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$ 933.99 USD

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Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is.

Cat Cams Sport Camshaft set 257/257 9.90mm/9.90mm - E30 318i E36 318i...

T#:578593

Part#: 1301411

Special Order: No Guaranteed ETA

$ 1,051.99 USD

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$ 1,051.99 USD

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Made in Belgium, Cat Cams offer great performance at a reasonable price. Cat Cam offers cams in most popular enthusiast upgrade specs to ensure there is a option for what ever your power goal is.

Timing Chain - E30 E32 E34

T#:4468

Part#: 11311716986

In Stock at Vendor

$ 47.17 USD

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$ 47.17 USD

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This single row timing chain is used on many BMW's from 1979 on. If you are rebuilding your engine we recommend replacing the timing chain.

IWIS is a leader in complex engine parts. Using advanced techniques in research and design allows IWIS to offer parts that not only repair, but ultimately improve the way your engine runs.

This item fits the following BMWs:
1979-1983 E21 BMW 320i 323i
1984-1985 E30 BMW 318i
1979-1981 E12 BMW 528i 530i
1985-1988 E28 BMW 533i 535i 535is
1989-1995 E34 BMW 535i
1979-1989 E24 BMW 633csi 635csi
1979-1987 E23 BMW 733i 735i
1988-1993 E32 BMW 735i 735il

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KING Performance Rod Bearings - M40/M42/M43/M44

T#:4538204

Part#: CR4042XP

In Stock at Vendor

$ 98.99 USD

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$ 98.99 USD

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King Racing’s XP series features pMax Black™, a unique tri-metal structure that is 24% harder than any other conventional tri-metal race bearing. pMax Black™ together with the XP geometric features are the ideal combination for performance racing.

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Timing Chain - Single Row

T#:578660

Part#: 11311716987

In Stock at Vendor

$ 62.99

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

$ 60.99 USD

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$ 60.99 USD

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The timing chain in any vehicle can begin to stretch and rattle over time. This is a common issue, and though BMW says it is a lifetime part, most enthusiasts decide to change them. If you need only the timing chain instead of a kit, ECS Tuning has your replacement. This is a direct fit replacement for any broken or stretched chain. A great replacement to a damaged chain or one that may have been misplaced out of a timing belt kit.

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King Performance Rod Bearing Set - Standard Size

T#:2393424

Part#: CR4596XP

Ships in 6 Business Days

$ 190.00 USD

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$ 190.00 USD

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Internal Engine
- Bearings (6)
- Camshafts (3)

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