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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Glyco Connecting Rod Bearing Set
Glyco Connecting Rod Bearing Set
Glyco - Corporate Logo
T#:375825
Part#: 11241284849
Ships in 1 Business Day
$ 92.02

This product was last offered at the strikethrough price on
07-15-2026

$ 84.36 USD
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$ 84.36 USD
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Standard bore - 45mm
Rod Bearing - E30 M3, E28 M5, E24 M6, E34 M5 (sold individually)
Rod Bearing - E30 M3, E28 M5, E24 M6, E34 M5 (sold individually) ...
Glyco - Corporate Logo
T#:183
Part#: 11241310515
In Stock
$ 30.59

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

$ 27.99 USD
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$ 30.59

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

$ 27.99 USD
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E30 M3, E28 M5, E24 M6, E34 M5 Rod Bearing. Sold individually. Standard sizing.

This item fits the following BMWs
1988-1991 BMW E30 M3 - 8 required.
1988 BMW E28 M5 - 12 required.
1989-1993 BMW E34 M5 3.6 liter - 12 required.
1987-1989 BMW E24 M6 - 12 required.
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Glyco "Yellow" Crankshaft Bearing Shell - Set - E28, E30, E34, E36, E39, E46, E53, E60, E83, Z3, Z4
Glyco "Yellow" Crankshaft Bearing Shell - Set - E28, E30, E34, E36, E...
Glyco - Corporate Logo
T#:375823
Part#: 11211706847
In Stock
$ 136.06

This product was last offered at the strikethrough price on
07-15-2026

$ 125.04 USD
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$ 125.04 USD
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Standard bore
Cylinder Head - Complete - E30 325i, E34 525i, M20 engine
Cylinder Head - Complete - E30 325i, E34 525i, M20 engine
Upgrade to the less restrictive cylinder head found on the M20 2.5L
AMC - Corporate Logo
T#:222771
Part#: 11121707032C
Ships in 7 Business Days
$ 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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Glyco Main Bearing Set (Standard) - E21, E28, E30
Glyco Main Bearing Set (Standard) - E21, E28, E30
Features All Single-Tang Main Bearings for Earlier M20 Engines
Glyco - Corporate Logo
T#:1196183
Part#: 11211722342
In Stock
$ 259.99

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

$ 231.99 USD
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$ 231.99 USD
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Main Bearing Set - Standard Size - E30 M3 2.3 liter
Main Bearing Set - Standard Size - E30 M3 2.3 liter
Glyco - Corporate Logo
T#:3166
Part#: 11210666110
Ships in 4 Business Days
$ 99.99 USD
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$ 99.99 USD
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This E30 M3 Main bearing set is in standard size for the 2.3 liter S14 engine. This main bearing kit includes the thrust bearings.

This item fits the following BMWs:
1988-1991 E30 BMW M3
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Glyco "Yellow" Crankshaft Bearing Shell - Set - E30, E36, E39, E46, E53, E60, E83, Z3, Z4 - 1st Overside (+0.25)
Glyco "Yellow" Crankshaft Bearing Shell - Set - E30, E36, E39, E46, E...
Glyco - Corporate Logo
T#:375824
Part#: 11211706850
In Stock at Vendor
$ 126.61

This product was last offered at the strikethrough price on
07-15-2026

$ 118.92 USD
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$ 118.92 USD
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59.75MM(+0.25) bore
Rod Bearing Set (+0.25)
Rod Bearing Set (+0.25)
Glyco - Corporate Logo
T#:23748157
Part#: 112412848516CYL-
Ships in 1 Business Day
$ 331.13

This product was last offered at the strikethrough price on
07-15-2026

$ 305.57 USD
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$ 305.57 USD
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Cylinder Head - Bare - E30 325i, E34 525i, M20 engine
Cylinder Head - Bare - E30 325i, E34 525i, M20 engine
AMC - Corporate Logo
T#:22168
Part#: 11121707032
Ships on Aug 13, 2026
$ 999.00 USD
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$ 999.00 USD
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This replacement cylinder head for BMW M20B25 6 cylinder engine includes new valve guides and seals. The stock valve guides are not replaceable so if you need new guides you likely need a new cylinder head.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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Osvat Intake Valve - E28, E30, E34
Osvat Intake Valve - E28, E30, E34
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
Osvat Exhaust Valve - Sold Each - E28, E30, E34
Osvat Exhaust Valve - Sold Each - E28, E30, E34
Osvat - Corporate Logo
T#:1196100
Part#: 11341708896
In Stock at Vendor
$ 35.98 USD
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$ 35.98 USD
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Replace your worn valves
Timing Chain - Single Row
Timing Chain - Single Row
Iwis - Corporate Logo
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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Glyco Connecting Rod Bushing - E12, E21, E23, E24, E28, E3, E30, E32, E34
Glyco Connecting Rod Bushing - E12, E21, E23, E24, E28, E3, E30, E32,...
Glyco - Corporate Logo
T#:187165
Part#: 11240618100
In Stock at Vendor
$ 12.99 USD
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$ 12.99 USD
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OEM BMW Connecting Rod Bush
Intake Valve - Priced Each
Intake Valve - Priced Each
Osvat - Corporate Logo
T#:596779
Part#: 11341267721
In Stock at Vendor
$ 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
Glyco Connecting Rod Bushing
Glyco Connecting Rod Bushing
Glyco - Corporate Logo
T#:374292
Part#: 11241278209
Ships in 1 Business Day
$ 6.11 USD
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$ 6.11 USD
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Press fit into small journal of connecting rod
Timing Chain - E30 E32 E34
Timing Chain - E30 E32 E34
Iwis - Corporate Logo
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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Glyco "White" Crankshaft Bearing Shell - Set - E28, E30, E34, E36, E39, E46, E53, E60, E83, Z3, Z4
Glyco "White" Crankshaft Bearing Shell - Set - E28, E30, E34, E36, E3...
Glyco - Corporate Logo
T#:374670
Part#: 11211706849
Back Ordered
$ 177.99

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

$ 172.99 USD
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$ 172.99 USD
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Standard bore
Glyco "White" Crankshaft Bearing Shell - Set - E28, E30, E34, E36, E39, E46, E53, E60, E83, Z3, Z4
Glyco "White" Crankshaft Bearing Shell - Set - E28, E30, E34, E36, E3...
Glyco - Corporate Logo
T#:374672
Part#: 11211706852
Back Ordered
$ 111.99

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

$ 108.99 USD
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$ 108.99 USD
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59.75MM(+0.25) bore

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