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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Rein Piston Ring - Priced Per Piston - E28, E30, E34, E36
Rein Piston Ring - Priced Per Piston - E28, E30, E34, E36
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Rein - Corporate Logo
T#:379806
Part#: 11251713192
Ships in 3 Business Days
$ 30.99 USD
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$ 30.99 USD
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For use on stock pistons, will need 6 sets to replace all piston rings in the engine
Rein Piston Ring Set - Priced Per Piston
Rein Piston Ring Set - Priced Per Piston
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:592811
Part#: 11251713178
Ships in 4 Business Days
$ 28.99 USD
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$ 28.99 USD
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Replace your worn rings - 84.000mm
Rein Piston Rings - Set - Single Piston - E30, E36
Rein Piston Rings - Set - Single Piston - E30, E36
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:591604
Part#: 11251727461
Ships in 4 Business Days
$ 31.99 USD
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$ 31.99 USD
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Replace your worn out piston rings with OE replacements - 84.000mm
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
Limited Qty Sale
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Standard replacement intake valve
Rein Exhaust Valve - Sold Each - E28, E30, E34
Rein Exhaust Valve - Sold Each - E28, E30, E34
For vehicles with production date from 12/1986
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Rein - Corporate Logo
T#:584424
Part#: 11341708896
In Stock
Sale - Save 9% $ 18.35

This product was last offered at the strikethrough price on
05-14-2026

$ 16.65 USD
Free Shipping on orders $49 and up
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Sale - Save 9%
$ 18.35

This product was last offered at the strikethrough price on
05-14-2026

$ 16.65 USD
Free Shipping on orders $49 and up
Add to Wish List
Replace your worn valves
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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OEM Rein Rocker Arm Shaft Plug - E28 E30 E34
OEM Rein Rocker Arm Shaft Plug - E28 E30 E34
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:583592
Part#: 11331264519
In Stock at Vendor
$ 6.11 USD
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$ 6.11 USD
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This is an OEM Rein replacement rocker arm shaft plug, also referred to by BMW as a Blind Plug. This plug connects to the end of the rocker arm shafts. 4 required per vehicle. Replace your old plugs to keep everything properly sealed.
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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
Free Shipping on orders $49 and up
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$ 8.99 USD
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Replacement intake valve 40.0/6.97MM
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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