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026808ECS - ECS Tuning Complete Performance Polyurethane Differential Bushing Set - E39 525i 528i 530i 540i M5

ECS Tuning Complete Performance Polyurethane Differential Bushing Set - E39 525i 528i 530i 540i M5

ECS

T#: 588359 | Part#: 026808ECS

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SALE: $170.04 (5% OFF)

WAS: $178.99 on 06-14-2026

This product was last offered at the strikethrough price on
06-14-2026

Lifetime Replacement

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Availability:

In Stock

Est. Ship Date:

on Jul 20, 2026

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Product Details

**Click here for installation instructions**

Urethane mounts keep the differential from twisting under load. As torque is put through the driveline it causes anything to twist and move. The differential is mounted to the subframe and the twisting and deflection can be transferred to the rest of the chassis. With a stiffer mount the differential will not deflect as much. This improves seat-of-the-pants feeling to the driver, giving more feedback for smoother power delivery. In theory, there's also more torque being sent to the drive wheels since it's not being used up shifting the diff weight around.

These are tough urethane bushings with a anodized aluminum center sleeve, engineered by ECS. This is a set of E39 diff bushings - 1 for the front and 2 for the rear. Polyurethane installation lube is also included.

This item is an upgrade to the following BMWs:
1997-2003 BMW E39 525i 528i 530i 540i M5

Prop 65 Warning

Cross Reference

33171090389
33171093008

Kit Contents

Qty	Description	T#	Part#	Lifetime
1	Polyurethane Bushing Lubricant	T#363115	9.11109~ECS	YES
1	Performance Polyurethane Differential Bushing - Front Position	T#588353	026808ECS01~A	YES
2	Performance Polyurethane Differential Bushing - Rear Position	T#588358	026808ECS02~A	YES

Product Q&A

Lifetime Replacement

This Product Is Covered By Our Lifetime Replacement Program

Products protected by our Lifetime Replacement Program are covered for as long as you own the product, no need to worry about an expiration date. Purchase your products and enjoy some worry-free motoring, knowing we've got you covered.

If you have any questions, would like to learn more or are ready to place a replacement claim, click here!

Fits These Cars

MAKE	MODEL	SUBMODEL	ENGINE	Special Fitment Notes
BMW	E39	525i	M54 2.5L	Use vehicle selector to confirm fitment
BMW	E39	528i	M52 2.8L	Use vehicle selector to confirm fitment
BMW	E39	530i	M54 3.0L	Use vehicle selector to confirm fitment
BMW	E39	540i	M62 4.4L	Use vehicle selector to confirm fitment
BMW	E39	M5	S62 5.0L	Use vehicle selector to confirm fitment

*The above product applications have been written by Turner Motorsport. All warranties, product application, fitment, and performance are the responsibility of Turner Motorsport. For additional information see the terms of use.