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BMW Drivetrain Parts for BMW X Series E53 (2000-2006)

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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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$ 23.99 USD

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$ 23.99 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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OEM Rein Transfer Case Fluid - 1 Liter - BMW

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T#:20089545

Part#: 83222409710

In Stock

$ 50.99

This product was last offered at the strikethrough price on
04-06-2026

$ 46.99 USD

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Rein Transfer Case Fluid TF 0870 is designed to service your BMW xDrive transfer case, ensuring optimal performance and reliability. This genuine BMW fluid is essential for maintaining the efficiency of your transfer case, especially if you are nearing or exceeding the 60,000-mile mark. Using Rein Transfer Case Fluid TF 0870 helps to catch up on crucial maintenance and keep your vehicle running smoothly.

Genuine BMW Fluid: Ensures compatibility and peak performance for BMW xDrive transfer cases.
Optimal Performance: Helps maintain the efficiency of the transfer case, enhancing overall vehicle reliability.
Preventive Maintenance: Ideal for vehicles approaching or exceeding 60,000 miles to ensure continued smooth operation.
High-Quality Formulation: Designed to meet BMW's specifications for superior protection and longevity.

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JB Racing Single Mass Lightweight Aluminum Flywheel - 6-speed - E46 3...

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T#:3474

Part#: 520-190-240

Ships in 2 Business Days

$ 672.00 USD

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$ 672.00 USD

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This is a performance replacement for BMW Part # 21207533868 Aluminum flywheels are much lighter than the stock steel flywheel and that produces better throttle response and more available horsepower to the wheels for faster acceleration. The JB Racing aluminum flywheels are a direct replacement for the stock flywheel and work with stock clutch components for an easy upgrade with very little downside.

Modern flywheels are built with additional components and features that are designed to dampen and minimize vibrations from the engine and transmission. As a result they have become bloated in weight and that means more energy is used up just making the flywheel spin. The weight difference between an aluminum and steel flywheel is huge - sometimes more than 50% less. Without the additional mass, more energy can be diverted to where it counts most - moving the car. The flywheel and clutch is one of the first areas that engine builders address when making the rotating assembly lighter for race engines. The dampening effect is just not needed on cars that are focused on performance.

In addition to releasing more power to the wheels, the lighter flywheel allows the engine to spin more freely, which improves throttle response. Again, the difference is huge as you watch the revs build faster than before. With the engine spinning easier the power band comes up much sooner. The stock steel flywheel feels lazy in comparison. There is a driving adjustment required to get used to how much faster the engine revs but that's not really a downside.

The JB lightweight flywheel is designed to be used with a factory organic clutch - the same clutch kit that you would get from any BMW dealer. This makes replacement clutch components easy to source and inexpensive when compared to specialized racing clutches. By using the factory BMW clutch, JB has also made the whole assembly easy to live with when used on the street. The clutch behaves the same as it originally did - just with better throttle response and more power! The JB flywheel can also be rebuilt with a new clutch contact surface - you don't have to buy a new flywheel.

Aluminum flywheels are considered 'single-mass' flywheels because they do not have the same dampening designs as an original 'dual-mass' flywheel. With a single-mass design more noise and vibration may be noticeable. There are steps you can take to minimize the noise - heavier weight transmission oil and clutch discs with anti-rattle springs (sprung-hub clutch).

The JB Flywheel includes the pilot bearing mounted in the flywheel hub, just like the factory configuration.

Stock Flywheel Weight = 25.0lbs
JB Flywheel Weight = 10.5lbs

This item fits the following BMWs:
2002-2005 E46 BMW 325i 330i (with 6-speed manual transmission)

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Transfer Case Servomotor M54 & N62 - Priced Each

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T#:4524502

Part#: 27102449709

Ships in 4 Business Days

$ 458.99 USD

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$ 458.99 USD

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Drive actuator for the transfer case on E53 X5 and E83 X3 SAVs, located on back side of transfer case.

OEM Rein CV Boot Repair Kit - Inner - E46 E53

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T#:12272

Part#: 31607565315

Back Ordered

$ 53.99

This product was last offered at the strikethrough price on
04-15-2026

$ 30.99 USD

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$ 30.99 USD

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This CV boot kit works on both front inner CV joints. Kit includes the following parts;

Boot
Grease
Attaching clamps

BMW Repair Kit Bellows, Interior
This item fits the following BMW Chassis:
E53 48IS,E46,E53 X5

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OEM Rein Shifter Ball Bushing - Multiple BMWs

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T#:362834

Part#: 25111220600

In Stock

$ 7.57 USD

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$ 7.57 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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BMW Aluminum Bolt

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T#:46478545

Part#: 23000417164S

Ships in 4 Business Days

$ 7.99 USD

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$ 7.99 USD

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This is a single-use bolt and should be replaced every time it’s removed. Don’t let a major repair come to a halt because you’re missing the proper hardware.

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

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T#:379685

Part#: 24311422671

Ships in 4 Business Days

$ 10.99 USD

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$ 10.99 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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OEM Rein Transmission Bushing - E53 X5 N62

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T#:19639

Part#: 22316771742

Ships in 4 Business Days

$ 74.99 USD

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A torn transmission bushing can contribute to rough shifting or gearbox damage. This bushing has been manufactured by the original equipment manufacturer Rein.

OEM Rein Front Axle C/V Boot Repair Kit - Outer - E53 X5

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T#:379154

Part#: 31607565316

Ships in 4 Business Days

$ 44.99 USD

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This CV boot kit works on both front outer CV joints. Kit includes the following parts; Boot Grease Attaching clamps

Rein Differential Drain Plug Gasket

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T#:19654

Part#: 07119963355

Ships in 5 Business Days

$ 2.03 USD

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GASKET RING for various sensors and seals.

OEM Rein CV Boot Repair Kit - Outer - E46 325xi 330xi, E53

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T#:369581

Part#: 31607507402

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$ 12.99 USD

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$ 12.99 USD

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This CV boot kit works on both front outer CV joints. Kit includes the following parts: Boot Grease Attaching clamps

Rein Magnetic Transmission Drain Plug

Fill and drain plug for vehicles with transmission code GS5X37BZ and production date fr...

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T#:53785537

Part#: HWU0117

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$ 16.99 USD

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$ 16.99 USD

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Magnetic Rein Transmission Plug Features Aluminum Construction with OE Dimensions and Threading. Magnetic Tip for Upgrade over Stock. Lightweight and Durable Construction Designed to Interface Perfectly with Modern Alloy Gear Housings

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