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

Upgrade to the less restrictive cylinder head found on the M20 2.5L

T#:222771

Part#: 11121707032C

Ships in 8 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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Rein Piston Ring - Priced Per Piston - E28, E30, E34, E36

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:379806

Part#: 11251713192

Ships in 2 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

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:592811

Part#: 11251713178

Ships in 3 Business Days

$ 28.99 USD

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$ 28.99 USD

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Replace your worn rings - 84.000mm

OEM Elring Cylinder Head Bolt Set - E30 E34 M20 2.5L 2.7L

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:2706174

Part#: 11121726478

In Stock at Vendor

$ 37.99 USD

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$ 37.99 USD

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Brand new set of cylinder head bolts - the cylinder head bolts need to be replaced after removal, once a bolt is torqued down you're unable to reuse it.

Rein Piston Rings - Set - Single Piston - E30, E36

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:591604

Part#: 11251727461

Ships in 3 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

CP Carrillo Forged Piston Set - BMW M20B25

T#:23847551

Part#: CP-FPS-M20-B25

Ships in 2 Business Days

$ 1,399.99 USD

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$ 1,399.99 USD

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Elevate Your Engine's Performance with Customizable CP Pistons

When it comes to optimizing your engine's performance, flexibility is key. That's why we offer a range of CP pistons with customizable compression ratios to cater to your specific needs. Whether you're embarking on a basic engine rebuild, planning to implement a low boost turbo or supercharger, or aiming to maximize power with high-performance camshafts, we have the ideal piston solution for you.

Our collaboration with CP ensures that you'll receive pistons of the highest quality, meticulously designed to meet the most demanding expectations. These pistons are a top choice for high-performance and racing engines.

We maintain a diverse selection of compression ratios in stock, making it convenient to find the right fit for your project. And if you require a custom piston application, our efficient service has you covered.

BORE: 84mm
Rod Length: 135mm
Compression Ratio: 8.5:1

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ARP Rod Bolt Set - M20 - 53mm

T#:1061435

Part#: ARP-RBS-M20

Ships on Aug 5, 2026

$ 314.99 USD

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$ 314.99 USD

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ARP, the world’s leader in fastener technology. There is no substitute for the best! Planning to boost your M20? Building a high HP stroker engine? This rod bolt kit is for you! This kit provides higher strength, more clamping power, and the option to re-use the hardware unlike your OEM bolts. We run these in many of our own builds as well and are 110% satisfied with the fit and finish of these ARP bolts. We offer a 53mm UHL version for those running OEM M20 rods or a 44mm UHL version for those who have upgraded to S50/S52 OEM rods.

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VAC Motorsports Performance Coated Rod Bearing Set - BMW E30 M3 S14 ...

T#:638307

Part#: VAC-HPRBS-S14STD

Ships on Aug 5, 2026

$ 249.99 USD

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$ 249.99 USD

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VAC Rod Bearing Sets are specially coated to reduce friction to a minimum; enabling lower temps and faster revolutions in your expensive S14 engine. The coated bearings are thermal breakdown resistant, helping to prevent premature engine failures under stress when things are most critical. The rod bearing area is a common stress area in the S14, these bearings can last much longer than any normal bearing sets and are used in all of VAC's highest performance BMW engine builds. These bearings have become a favorite product of all of VAC's race and engine building customers around the globe who have reported unparalleled wear characteristics under all conditions. Made for VAC by the same company who manufactures for the US military, NASCAR teams, and other customers that require "mission-critical" quality. If you are looking for high-performance rod bearings, this is the set for your S14. VAC Tech Notes: As with all bearings, please check your tolerances and size before installation. Due to the specialized tools needed, professional install recommended. There are no returns available on any engine bearings.

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

T#:22168

Part#: 11121707032

Ships on Aug 12, 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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Rein Exhaust Valve - Sold Each - E28, E30, E34

For vehicles with production date from 12/1986

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

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

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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

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Replace your worn valves

Rocker Shaft Plug - E30 325e 325i, E34 525i - M20 engine

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:14515

Part#: 11331264519

In Stock

$ 2.03 USD

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$ 2.03 USD

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Rocker shaft blind plug for M20 engine. 4 per engine required.

If you drive a European vehicle, chances are high your vehicle came equipped with one or more Victor Reinz gaskets. Choose OE quality VR gaskets and seals and do the job right the first time.

This item fits the following BMWs:
1982-1988 E28 BMW 528e
1984-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix
1989-1990 E34 BMW 525i

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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!

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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CP Carrillo Forged Piston Set - BMW M20B25

T#:22591977

Part#: CP-FPS-M20-B25-8

Ships in 7 Business Days

$ 1,399.99 USD

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Qty

$ 1,399.99 USD

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Elevate Your Engine's Performance with Customizable CP Pistons

When it comes to optimizing your engine's performance, flexibility is key. That's why we offer a range of CP pistons with customizable compression ratios to cater to your specific needs. Whether you're embarking on a basic engine rebuild, planning to implement a low boost turbo or supercharger, or aiming to maximize power with high-performance camshafts, we have the ideal piston solution for you.

Our collaboration with CP ensures that you'll receive pistons of the highest quality, meticulously designed to meet the most demanding expectations. These pistons are a top choice for high-performance and racing engines.

We maintain a diverse selection of compression ratios in stock, making it convenient to find the right fit for your project. And if you require a custom piston application, our efficient service has you covered.

BORE: 85mm
Rod Length: 135mm
Compression Ratio: 8.8:1

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CP Carrillo Forged Piston Set - BMW M20B25

T#:34583154

Part#: CP-FPS-M20-B25A

Ships on Aug 5, 2026

$ 1,399.99 USD

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$ 1,399.99 USD

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Elevate your engine's performance with a choice of compression ratios that suit your needs. Opt for stock compression when conducting a basic engine rebuild or for low boost turbo or supercharger applications. If you plan to run high-performance camshafts, added compression can significantly enhance your engine's capabilities. On the other hand, if you're aiming for a big boost turbo setup, low compression is the way to go. CP and this distributor have collaborated closely to bring you the finest pistons for your high-performance or racing engine. These pistons are meticulously crafted to meet the most rigorous standards and are unrivaled in quality. Piston Specifications: BORE: 84.5mm Rod Length: 135mm Compression Ratio: 8.8:1

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BMW Cylinder head bolt set

T#:45483601

Part#: 802.700

Special Order: No Guaranteed ETA

$ 42.99 USD

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$ 42.99 USD

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BMW Cylinder Head Bolt - Priced Each - M10 1.8L - Partnumber 11120621144

Cylinder Head Bolt

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:580043

Part#: 802.76

Special Order: No Guaranteed ETA

$ 14.99 USD

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$ 14.99 USD

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Prevent oil leaks, coolant mixing, and catastrophic compression loss by refreshing your engine with fresh, factory-spec head hardware.

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

Sub-Categories

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

Rein Piston Ring - Priced Per Piston - E28, E30, E34, E36

Rein Piston Ring Set - Priced Per Piston

OEM Elring Cylinder Head Bolt Set - E30 E34 M20 2.5L 2.7L

Rein Piston Rings - Set - Single Piston - E30, E36

CP Carrillo Forged Piston Set - BMW M20B25

Elevate Your Engine's Performance with Customizable CP Pistons

ARP Rod Bolt Set - M20 - 53mm

VAC Motorsports Performance Coated Rod Bearing Set - BMW E30 M3 S14 ...

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

Rein Exhaust Valve - Sold Each - E28, E30, E34

Rocker Shaft Plug - E30 325e 325i, E34 525i - M20 engine

OEM Rein Rocker Arm Shaft Plug - E28 E30 E34

CP Carrillo Forged Piston Set - BMW M20B25

Elevate Your Engine's Performance with Customizable CP Pistons

CP Carrillo Forged Piston Set - BMW M20B25

BMW Cylinder head bolt set

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