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Rein BMW Drivetrain Parts for BMW 3 Series E30 (1984-1991)

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Building your perfect BMW is more than just adding horsepower and stiff suspension. Your drivetrain needs attention in order to deliver power effectively. Most BMWs feature comfortable clutch discs, heavy flywheels, long shifter throws, and open differentials. The drivetrain transmits power to the wheels, but can also be a source of power loss when it is designed for comfort rather than performance. Everything on this page will help you improve your power delivery and driving experience by providing custom Limited Slip Differentials, Short Shift Conversions, Performance Clutch Discs, Lightweight Flywheels, and anything else your BMW needs to be the perfect driving experience.

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OEM Rein Magnetic Differential Oil Drain Plug - M22x1.5 - Most BMW & ...

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T#:38890943

Part#: HWU0065

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$ 22.79 USD

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As components in the differential begin to wear, metal particles become loose in the diff fluid, which can lead to excess wear. This magnetic plug pulls these particles out of suspension, helping to reduce wear over time. Replaces BMW # 33117525064

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Rein Driveshaft Center Mount - E30, E32, E34

For vehicles with production date from 09/1987

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T#:375738

Part#: 26121226723

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$ 41.79 USD

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Used to support the center of the driveshaft

E30 325e/325i Motor Mount

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T#:7085

Part#: 11811132323

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$ 25.64 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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Rein Driveshaft Center Support Bearing

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T#:379700

Part#: 26121225071

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$ 12.83 USD

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Commonly referred to as "carrier bearing"

Differential Oil Drain Plug

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T#:27405453

Part#: 33117525064

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05-21-2026

$ 9.11 USD

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OEM Rein Shifter Ball Bushing - Multiple BMWs

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T#:362834

Part#: 25111220600

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$ 7.19 USD

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This bushing is the point where the shifter arm pivots. If you are experiencing excess play in your shifter, this could be the cause. Worn out shifter ball bushings allow too much movement from wear over time.

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OEM Rein Transmission Input Shaft Seal - E12 E21 E23 E24 E28 E30 E31 ...

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T#:379685

Part#: 24311422671

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$ 10.44 USD

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The input shaft seal on your transmission ensures that you will not experience any fluid loss from behind the guide sleeve. If you have a leak, be sure to replace it as soon as possible to avoid losing too much fluid, which can ultimately damage your transmission.

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Rein Differential Drain Plug Gasket

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T#:19654

Part#: 07119963355

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$ 1.93 USD

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GASKET RING for various sensors and seals.

Rein Transmission Mount - E23, E24, E28, E30

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T#:379789

Part#: 23711175939

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$ 11.39 USD

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Stop driveline vibration

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