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

Genuine BMW Standard Thrust Bearing - E30 318i M10 M3 E21 320i ...

T#:12915

Part#: 11210666100

Ships in 2 Business Days

3% off MSRP $ 65.99

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$ 63.99 USD

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$ 65.99

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$ 63.99 USD

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GUIDE-BEARING SHELL RED:H11240

Fits BMW Engines including:
M10,S14

Genuine BMW Hose - E30 M3

T#:41701

Part#: 13411309614

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2% off MSRP $ 65.99

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$ 64.99 USD

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$ 65.99

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$ 64.99 USD

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Genuine BMW HOSE

Genuine BMW Crankshaft Timing Gear - 11211284940 - E30,E34

T#:12916

Part#: 11211284940

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$ 72.99 USD

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Through years of working on the E30 chassis, we have found that replacing the Crankshaft Timing Gear when doing your timing service is often a good idea. Replace yours with a Genuine BMW Crankshaft gear today.

This item fits the following BMW Chassis:
E30,E34

Fits BMW Engines including:
M20

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Fuel Tank Vent System Charcoal Filter - E36 Z3

T#:2058

Part#: 16131180886

Ships in 1 day

3% off MSRP $ 178.99

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$ 173.99 USD

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$ 178.99

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$ 173.99 USD

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This Fuel Tank Vent System Charcoal Filter BMW E36 325i 1992-1/1995 318i 1992-1996 Z3 1.9 to 1/1997. If you smell fuel through the vent system of the car this charcoal cannister may be clogged and may need to be replaced.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
1992-1/1995+ E36 BMW 325i 325is 325ic
1992-1996 E36 BMW 318i 318is 318ic 318ti
1996-1/1997 Z3 BMW Z3 1.9

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Genuine BMW Crank Timing Sprocket - M42 M44

T#:32339

Part#: 11211247338

Ships in 3 Business Days

2% off MSRP $ 166.99

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$ 162.99 USD

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$ 166.99

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$ 162.99 USD

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Genuine BMW Sprocket -
This item fits the following BMW Chassis:
E30,E36

Fits BMW Engines including:
M42,M44

Victor Reinz Cylinder Head Gasket

T#:19489

Part#: 11121722735

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$ 37.99 USD

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CYLINDER HEAD GASKET ASBESTO 11121722735 Manufactured by Reinz

Rocker Arm Shaft - Priced Each

T#:371121

Part#: 11331264533

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$ 36.99

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

$ 35.99 USD

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Genuine BMW Adapter - M20

T#:33903

Part#: 11311713064

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$ 54.99 USD

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$ 55.99

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$ 54.99 USD

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Genuine BMW Adapter -
This item fits the following BMW Chassis:
E30,E34

Fits BMW Engines including:
M20

Bosch Flow Matched EV14 Injectors - US CAR Connector (EV6) - 1600cc -...

NOT A DIRECT REPLACEMENT FOR FACTORY INJECTORS - For use with aftermarket port injectio...

T#:43041714

Part#: 501-0114

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$ 1,040.99 USD

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The Black Market Parts Genuine Bosch Motorsports EV14 fuel injectors featuring USCAR (EV6) connector matched and packaged in a pack of 6 units. Direct plug-in for Motiv Reflex, AIC, and Nexsys Motorsports

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Karlyn Ignition Wire Set - E30 M3

T#:381414

Part#: 12121311735

Ships in 6 Business Days

$ 249.99 USD

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Complete set of plug wires

Genuine BMW Cylinder Head With Bearing Ledges - 11121739913 - E30,E36...

T#:31259

Part#: 11121739913

Ships on Oct 22, 2026

$ 2,996.99 USD

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$ 2,996.99 USD

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Genuine BMW Cylinder Head With Bearing Ledges -
This item fits the following BMW Chassis:
E30,E36

Fits BMW Engines including:
M42

Genuine BMW Rocker Arm Shaft - 11331274975

T#:222758

Part#: 11331274975

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$ 97.99 USD

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Genuine BMW Rocker Arm Shaft - 11331274975

This item fits the following BMW Engines:

Horn - E30

T#:143835

Part#: 61337163992

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4% off MSRP $ 27.99

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$ 26.99 USD

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$ 27.99

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$ 26.99 USD

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Genuine BMW Horn - Fiamm 510Hz
This item fits the following BMW Chassis:
E30

E30 325e/325i Motor Mount

2X Entries Into Our F80 M3 Sweepstakes

T#:7085

Part#: 11811132323

In Stock

$ 26.99

This product was last offered at the strikethrough price on
08-27-2026

$ 22.99 USD

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These are the stock rubber motor mounts for the E30 M20 engine - 325e and 325i. These are the original spec full rubber mounts. The M20 has a fatal flaw especially when the motor mounts are worn. The engine can shift and contact other things in the engine compartment, mostly cooling-related parts. This is especially troublesome on the 1984-1987 models as the alternator belt and blades can cut into the lower radiator hose. Don't neglect your motor mounts! A worn motor mount allows the engine to twist and shift around. The harder you're driving the more shift will occur. Twisting of the engine can also lead to shifting problems as the transmission twists with it. There are countless issues related to worn or compressed motor mounts so don't overlook these as a regular replacement item (every 50,000 miles).

For more serious track or street cars we recommend our HD motor mount kit with reinforcing cups - click here. These are a stiffer mount to begin with (coming from the Euro 635CSi) and the aluminum cups give additional strength especially for the side-side shearing loads that you get from cornering.

These stock rubber motor mounts are sold per mount .

This item fits the following BMWs:
1984-1991 E30 BMW 325e 325es 325i 325ic 325is

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Glyco Main Bearing Set (Standard) - E21, E28, E30

Features All Single-Tang Main Bearings for Earlier M20 Engines

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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Valve Cover Gasket - E30 325e 325i E34 525i w M20 engine

T#:337956

Part#: 11121730229

In Stock

Starting at $ 42.99 USD

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Starting at $ 42.99 USD

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This valve cover gasket fits BMW E30 325e 325es 325i 325is 325ic 325ix 1984-1991 and E34 525i 1989-1990 with M20 engine.
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.

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Battery Cable (Plus Pole) - E30

T#:39298

Part#: 12421711258

Ships in 1 day

2% off MSRP $ 144.99

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$ 141.99 USD

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2% off MSRP

$ 144.99

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$ 141.99 USD

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Genuine BMW Battery Cable (Plus Pole) - L=890mm
This item fits the following BMW Chassis:
E30

Fits BMW Engines including:
M20

Genuine BMW Valve Cover Gasket - E30 M3

T#:360580

Part#: 11121312171

Ships in 1 day

3% off MSRP $ 79.99

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$ 77.99 USD

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$ 79.99

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$ 77.99 USD

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Genuine BMW Fuel Breather Line Cover - E30

T#:7378

Part#: 16131179011

In Stock

2% off MSRP $ 142.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 139.99 USD

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2% off MSRP

$ 142.99

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$ 139.99 USD

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Genuine BMW Cover

This item fits the following BMW Chassis:
E30 M3,E30

Fits BMW Engines including:
M10,M20,M42,N51,S14

Crankshaft Thrust Bearing - Green - E28, E30, E34, E36, E39, E46, Z3,...

T#:32543

Part#: 11212241935

In Stock

Sale - Save 40% $ 44.99

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$ 27.01 USD

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This product was last offered at the strikethrough price on
05-02-2026

$ 27.01 USD

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Genuine BMW Guide-Bearing Shell Green - 60,00Mm(0)
This item fits the following BMW Chassis:
E36 M3,E46 M3,E85 Z4M,E30,E34,E36,E39,E46,E85 Z4,E86 Z4

Fits BMW Engines including:
M20,M50,M52,S50,S52,S54

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Genuine BMW Fuel Vent Hose

T#:19435

Part#: 13311722565

Ships in 1 day

3% off MSRP $ 68.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 66.99 USD

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3% off MSRP

$ 68.99

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$ 66.99 USD

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Genuine BMW Fuel Hose - 561mm-920mm

This item fits the following BMW Chassis:
E30 M3,E34 M5,E30,E34

Fits BMW Engines including:
M10,M20,M30,M50,M70,S14,S38

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Genuine BMW Fuel Pump - E30 318 M3 (09/1983+), 325e 325i (up to 09/19...

For Vehicle's with the production date up to 09/1987 For vehicles with a production date from 09/1983+

T#:2786

Part#: 16141179415

Ships in 1 day

7% off MSRP $ 869.11

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 809.99 USD

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7% off MSRP

$ 869.11

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$ 809.99 USD

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This in tank fuel pump fits the BMW E30 325e 325es 325i 325is 325ix 325ic thru 1987 with M20 engine. This is also called the pre-pump and is located inside the fuel tank.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
1984-1987 E30 BMW 325e 325es 325i 325is 325ix 325ic
1988-1991 E30 BMW M3

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Bremi Distributor Cap - E30 M3

T#:14355

Part#: 12111312160

Ships in 1 Business Day

$ 132.85

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

$ 121.79 USD

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This is a Bremi brand distributor cap for E30 M3 with S14 engine. Bremi is an OEM supplier to BMW of ignition components. This part number is an direct replacement for Bosch #03241.We recommend getting the corresponding Bremi distributor rotor # 12111312157 at the same time.

This item fits the following BMWs:
1988-1991 E30 BMW M3

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Genuine BMW Guide Tube Upper Part - 12121727687

T#:38152

Part#: 12121727687

In Stock

$ 42.99 USD

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Designed as an authentic accessory, the Genuine BMW spark plug wire tray is created to effectively manage and arrange the spark plug wires within your BMW. Crafted to adhere to the rigorous standards set by BMW, this tray guarantees a tidy and secure organization of the spark plug wires. It plays a crucial role in preserving the organization and efficiency of your BMW's ignition system, ultimately contributing to smooth combustion and optimal engine performance. This genuine BMW spark plug wire tray is a dependable, top-quality accessory that enhances both the functionality and appearance of your vehicle.

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Crankshaft Thrust Bearing - Green - E28, E30, E34, E36, E39, E46, Z3,...

T#:19143

Part#: 11211706830

In Stock

Sale - Save 24% $ 69.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 52.95 USD

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Sale - Save 24%

$ 69.99

This product was last offered at the strikethrough price on
05-02-2026

$ 52.95 USD

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Genuine BMW Guide-Bearing Shell Green - 60,00Mm(0)
This item fits the following BMW Chassis:
E36 M3,E46 M3,E85 Z4M,E30,E34,E36,E39,E46,E85 Z4,E86 Z4

Fits BMW Engines including:
M20,M42,M50,M52,S50,S52,S54

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Basic Timing Belt Service Kit - BMW E30 E28 E34 M20

10X Entries Into Our F80 M3 Sweepstakes

T#:20386734

Part#: 11311469240T2KT

Ships in 1 Business Day

$ 97.99

This product was last offered at the strikethrough price on
05-17-2026

$ 85.99 USD

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$ 85.99 USD

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Often overlooked, your timing belt is a crucial component that requires replacement every 60,000 miles. It is common for an unserviced timing belt to snap without warning, leaving you with bent valves and costly repairs. Included in this kit are the following: Continental (OEM) Timing Belt INA (OEM) Tensioner Radiator Drain Plug

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OEM Rein Fuel Tank Filler Cap - Multiple BMWs

2X Entries Into Our F80 M3 Sweepstakes

T#:639082

Part#: 16116750564

Ships on Oct 15, 2026

$ 25.99 USD

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$ 25.99 USD

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Replace your damaged or missing non-locking fuel tank cap with this direct replacement cap.

Ambient (Outside) Temperature Sensor

2X Entries Into Our F80 M3 Sweepstakes

T#:376060

Part#: 65811383204

In Stock

$ 32.99 USD

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$ 32.99 USD

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If your old, original sensor has failed, you will not get a correct temperature reading. Replace it and restore function to your BMW.

Bosch Fuel Pump Assembly - E30

T#:639102

Part#: 16141179992

In Stock

$ 200.99

This product was last offered at the strikethrough price on
05-01-2026

$ 152.99 USD

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$ 152.99 USD

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Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their exacting assembly process and high level of durability you can expect a long service life from all Bosch products.

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Camshaft Position Sensor - E30, E34

T#:205376

Part#: 12121722570

Ships in 6 Business Days

6% off MSRP $ 269.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 254.99 USD

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6% off MSRP

$ 269.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 254.99 USD

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Genuine Bmw Pulse Generator -12121722570

Genuine BMW Power Steering Belt - E30 318i M10 E30 M3

T#:58511

Part#: 32421316785

Ships in 3 Business Days

Sale - Save 15% $ 41.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 35.50 USD

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$ 41.99

This product was last offered at the strikethrough price on
05-02-2026

$ 35.50 USD

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Genuine BMW Fan Belt - Avx 10X813
This item fits the following BMW Chassis:
E30 M3,E30

Motorsport Valve Springs - E30 M3, E24 M6, E34 M5, E36 Euro M3 (Price...

T#:281

Part#: 11341315912

In Stock

Sale - Save 25% $ 39.85

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 29.89 USD

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

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These Motorsport valve springs are from the Sport Evo 3 model but can be used in all E30 M3s (and others). We found that the stock original valve springs can be too weak when used with upgraded cams and this genuine BMW Motorsport part is an upgrade over the original design. Valve springs also get weaker over time so these are the perfect replacement when refreshing the S14 cylinder head. A weak spring can lead to a burnt valve seat or even a bent valve. These are also the stock springs in the M88/S38 and Euro S50B30.

Priced per valve (price includes 1 inner and 1 outer).

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Spark Plug Wires Set

2X Entries Into Our F80 M3 Sweepstakes

T#:591858

Part#: 12121720529

In Stock

$ 129.99 USD

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Includes ignition coil wire and conduit

BMW Head Gasket Set

2X Entries Into Our F80 M3 Sweepstakes

T#:15213974

Part#: 11129065721

In Stock

$ 83.00

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

$ 75.99 USD

Limited Qty Sale

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$ 83.00

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

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Most people will probably experience a head gasket failure at one point or another during vehicle ownership. The signs of a failed head gasket are easy to identify: Milky oil as the coolant mixes in, loss of performance, and sweet smelling, white smoke coming from your tailpipe. It usually happens when the engine is overheated or has a number of miles on it. Replace yours and get your engine running again.

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Genuine BMW Electrical System Spark Plug, High Power 12120037607 ...

T#:12461

Part#: 12120037607

In Stock

3% off MSRP $ 38.02

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 36.99 USD

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3% off MSRP

$ 38.02

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 36.99 USD

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Genuine BMW Spark Plug, High Power -
This item fits the following BMW Chassis:
E30,E34,E36,E38,E39,E46,E53 X5,E63,E65,E83 X3,E85

Passenger Side Fuel Sending Unit

2X Entries Into Our F80 M3 Sweepstakes

T#:5471090

Part#: 16141152266

In Stock

$ 264.99 USD

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$ 264.99 USD

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Fuel sending unit, found in your vehicle's fuel tank, on the side with the fuel pump.

E36 M3 S50 Aftermarket Timing Chain Tensioner. Upgrade for E24 M6, E2...

We Price Match - Give Us A Call or Chat!

T#:239

Part#: 11311405081

Ships in 1 Business Day

$ 395.99

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

$ 384.99 USD

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$ 384.99 USD

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The timing chain tensioner from the 1995 E36 M3 is a great upgrade for other Motorsport models - 1988-1991 E30 M3 and 1989-1995 E34 M5! This tensioner virtually eliminates the cold start-up engine rattle so common with the S14 and S38 engines. It makes the whole engine quieter and smoother. Any new tensioner will accomplish that but the S50 tensioner has several new features that make it superior to the original design. This unit also has a internally loaded spring, so installation is much easier than the old style tensioner (no need to squeeze the spring and hold it while installing). Includes oil seal ring (not pictured).

Aftermarket Febi brand.

This item fits the following BMWs:
1985-1989 E24 BMW M635CSi M6 - M88/3, S38B35 engine
1988 E28 BMW M5 - M88/3, S38B35 engine
1988-1991 E30 BMW M3 - S14 engine
1989-1995 E34 BMW M5 - S38 engine
1995 E36 BMW M3 - S50B30US engine
1994-1999 E36 BMW M3 Euro - S50B30 and S50B32 engines

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

2X Entries Into Our F80 M3 Sweepstakes

T#:591604

Part#: 11251727461

Back Ordered

$ 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

Cylinder Head Gasket

T#:593760

Part#: 11121734279

Ships in 1 Business Day

$ 40.99

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

$ 33.99 USD

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$ 33.99 USD

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Replacement Cylinder Head Gasket from Victor Reinz

Elring Head Gasket Set - E30 M3

2X Entries Into Our F80 M3 Sweepstakes

T#:593547

Part#: 11121316992

Ships in 1 Business Day

$ 362.99

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

$ 352.99 USD

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$ 352.99 USD

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Includes all the gaskets and seals needed when rebuilding the S14 cylinder head, along with the head gasket. This set of gaskets is a both a time and money saver. It includes all of the commonly replaced gaskets, seals, and o-rings when performing this overhaul. Having these on hand instead of chasing them down at the last minute will save you time, money, and frustration. With this area of the engine apart you're going to want or need to replace these items anyway to ensure it's free of fluid and vacuum leaks. This is especially important because some states have very strict emissions regulations and vacuum and oil leaks can lead to failed inspections tests. On newer cars this can also create issues in the on-board diagnostics system. Even if you're not pulling the head this set includes so many valuable parts you'll want to keep this on hand to use for spares. This item fits the following BMWs: 1987-1991 E30 BMW M3

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Glyco "Yellow" Crankshaft Bearing Shell - Set - E30, E36, E39, E46, E...

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

OEM Bosch Oxygen Sensor - E30 325i/is 1987, E30 325e/es 1988 ...

T#:2997

Part#: 11781716114

Ships in 1 Business Day

$ 173.99

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

$ 146.99 USD

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$ 146.99 USD

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This direct fit Bosch oxygen sensor plugs directly into your factory connector. No cutting or splicing required. A new oxygen sensor can improve driveability and lengthen engine life. It fits BMW E30 325e 325es 325i 325i s325ix. Bosch # 13045. Bad oxygen sensors can cause check engine lights and poor fuel mileage. Replace your faulty sensor with this high quality Bosch sensor to turn off your check engine light and restore fuel mileage.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts. All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

This item fits the following BMWs:
1988 E30 BMW 325e 325es
1987 E30 BMW 325i 325is 325ic 325ix

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Elring Cylinder Head Gasket

2X Entries Into Our F80 M3 Sweepstakes

T#:19411

Part#: 11121722734

Ships in 1 Business Day

$ 35.99

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

$ 34.99 USD

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$ 34.99 USD

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CYLINDER HEAD GASKET ASBESTO 11121722734

OEM INA Engine Timing Chain - M42, M44

T#:42301995

Part#: ZC0016

Ships in 7 Business Days

$ 111.99 USD

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$ 111.99 USD

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Keep your BMW’s performance sharp and reliable with the OEM INA Engine Timing Chain for restoring your timing system and maintaining engine health.

Fuel Pump - E30 325e 325es 325i 325is 325ix 325ic (09/87 and up) ...

T#:2749

Part#: 16141179992

In Stock at Vendor

$ 352.99

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

$ 344.99 USD

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$ 344.99 USD

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This fuel pump fits the BMW E30 325e 325es 325i 325is 325ic and 325ix from 1988-1991. This fuel pump is located inside the fuel tank.

This item fits the following BMWs:
1988-1991 E30 BMW 325e 325es 325i 325is 325ic 325ix

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Crankshaft Seal - Front

T#:594918

Part#: 11141439570

In Stock at Vendor

$ 24.57

This product was last offered at the strikethrough price on
06-03-2026

$ 24.27 USD

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$ 24.27 USD

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The front seal or crankshaft seal is one of the most difficult to replace. However, they often fail, and when they do, your car will be marking it's territory with little oil drops wherever you park. Apart from making a mess, it can also cause oil to come in contact with the pulley surfaces. Replace yours and keep your oil in your engine.

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Victor Reinz Cylinder Head Gasket Kit - E30, E34

T#:366922

Part#: 11129059240

Ships in 1 Business Day

$ 507.57

This product was last offered at the strikethrough price on
08-26-2026

$ 431.09 USD

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$ 431.09 USD

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Head gasket with all required accompanying gaskets for a proper cylinder head installation

Febi Camshaft - E30, E34

We Price Match - Give Us A Call or Chat!

T#:19082

Part#: 11311716138

Ships in 1 Business Day

$ 368.34

This product was last offered at the strikethrough price on
05-15-2026

$ 292.43 USD

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$ 292.43 USD

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CAMSHAFT 11311716138 Manufactured by Febi

This item fits the following BMWs:
BMW 3 Series - 325i, 325i Convertible, 325is, 325ix
BMW 5 Series - 525i

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Oil Pump Chain - E30 M3, E28, E24, E23

T#:99

Part#: 11411716988

Ships in 1 Business Day

$ 29.99

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

$ 28.99 USD

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$ 28.99 USD

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E30 M3 Replacement Oil Pump Chain. Superseded to 11417577656

OEM Bosch Oxygen Sensor -- E30 M3

T#:3454

Part#: 11781310838

Ships in 1 day

$ 146.47

This product was last offered at the strikethrough price on
08-03-2026

$ 133.99 USD

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$ 133.99 USD

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A new oxygen sensor can improve driveability and lengthen engine life. Ultimately, you achieve a smoother running engine that is more fuel efficient. Feedback from the oxygen sensor provides closed-loop control of the injected quantity of fuel for optimum air-fuel mixture, enabling virtually complete combustion to take place. Contaminants in gas and certain atmospheric conditions can drastically shorten the life of any oxygen sensor, therefore they should be checked with every periodic maintenance and changed if necessary.

This is the OEM Bosch oxygen sensor for E30 BMW's with the S14 engine. This sensor is mounted in the manifold before the catalytic converter. OEM replacement for BMW # 11781310838.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts. All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

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

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