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025993ladbKT - 188mm Dual-Mount Differential Cover With FREE Heavy Duty Differential Bushings - E30

188mm Dual-Mount Differential Cover With FREE Heavy Duty Differential Bushings - E30

For a limited time, get two ECS Heavy Duty differential bushings FREE with the purchase of our Dual-Mount Differential Cover Kit—the ultimate rear-end upgrade for your high-output E30 build. Engineered for strength, cooling, and reliability, this kit is the go-to solution for enthusiasts pushing their car on the track, drift events, or the drag strip.

Turner Motorsport Heavy Duty Dual Mount Differential Cover – E30

Stop worrying about weak factory differential mounts! The OEM E30 differential cover has only one mounting point, which can fail under high torque or boosted applications. Turner’s dual-mount billet aluminum cover solves this problem by adding a secondary mounting ear secured to the chassis via a billet plate and sheet metal bracket—either bolted for easy installation or welded for ultimate rigidity.

Crafted from 6061-T6 billet aluminum and finished with black hard coat anodizing, this cover is 30% stronger than stock and engineered for maximum durability. It also features large CFD-optimized cooling fins and a built-in air duct to reduce fluid temperatures, ensuring consistent performance and long fluid life. Optional -6AN fittings allow integration with an external cooler, and a 1/8 NPT port supports fluid temperature monitoring.

Key Features:

Dual reinforced mounting points with integral sheet metal bracket and billet plate for extreme durability

Secondary mount can be bolted or welded to chassis for added rigidity

Large external fins designed via CFD for efficient heat dissipation

Integrated air duct for improved airflow and fluid cooling

Breather system to vent pressure properly

1/8 NPT sensor port for real-time differential temperature monitoring

Maintains compatibility with OEM, aftermarket, or performance E30 differential bushings

Accommodates large rear sway bars and upgraded suspension setups

Removable air duct allows easy access to fill/drain plugs and sensor bungs

ECS Heavy Duty Rear Differential Bushings

Factory rubber bushings are soft, allowing unwanted differential movement that creates a disconnected feel, excess noise, and reduced performance. ECS Heavy Duty rear differential bushings solve this problem with a stiffer HD 70D rubber compound and aluminum center sleeve, locking down your differential while keeping NVH levels manageable for street driving.

Benefits:

Enhanced Responsiveness: Reduces deflection for a more direct drivetrain feel

Street & Track Friendly: HD rubber absorbs vibration but remains firm under performance conditions

Replaces Weak OEM Mount: Ideal for aging or cracked stock bushings

Easy Installation: Precision-manufactured to OEM specifications for a direct bolt-in fit

Doorbusters

T#: 47439408 | Part#: 025993ladbKT

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Checking Vehicle Fitment...

$1300.00

Lifetime Replacement

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Availability:

Available from Supplier

Est. Ship Date:

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Product Details

Turner Motorsport Heavy Duty Dual Mount Differential Cover – E30

Key Features:

Dual reinforced mounting points with integral sheet metal bracket and billet plate for extreme durability
Secondary mount can be bolted or welded to chassis for added rigidity
Large external fins designed via CFD for efficient heat dissipation
Integrated air duct for improved airflow and fluid cooling
Breather system to vent pressure properly
1/8 NPT sensor port for real-time differential temperature monitoring
Maintains compatibility with OEM, aftermarket, or performance E30 differential bushings
Accommodates large rear sway bars and upgraded suspension setups
Removable air duct allows easy access to fill/drain plugs and sensor bungs

ECS Heavy Duty Rear Differential Bushings

Benefits:

Enhanced Responsiveness: Reduces deflection for a more direct drivetrain feel
Street & Track Friendly: HD rubber absorbs vibration but remains firm under performance conditions
Replaces Weak OEM Mount: Ideal for aging or cracked stock bushings
Easy Installation: Precision-manufactured to OEM specifications for a direct bolt-in fit

Prop 65 Warning

Kit Contents

Qty	Description	T#	Part#	Lifetime
6	M4x0.7x8 Stainless Button-Head Socket Cap Screw	T#30497153	92095A189 ~BRP	YES
5	Zinc-Plated Locking Nut	T#599369	96595A102~BRP	YES
5	Zinc-Plated Alloy Steel Screw - Hex Head	T#9351489	91263A846~BRP	YES
1	316 Stainless Steel Threaded Pipe Fitting - Low-Pressure, Solid Plug With Hex Drive, 1/8 NPTF	T#19362528	4452K541~BRP	YES
2	Billet Diff Cover Replacement Drain Plug	T#19362530	4835K45~BRP	YES
1	Breather Vent - Nickel-Plated Steel, 1/8 NPT Male	T#19362532	9833K21~BRP	YES
1	Differential Duct	T#30596460	049424LA02~B	YES
2	Zinc Yellow-Chromate Plated Steel Hex Head Screw, High-Strength, M10 X 1.5 Mm Thread, 25 Mm Long	T#38452849	90854A189~BRP	YES
2	Zinc Yellow-Chromate Plated Steel Hex Head Screw, High-Strength, M10 X 1.5 Mm Thread, 70 Mm Long	T#38452850	95327A641~BRP	YES
4	Zinc Yellow-Chromate Plated Steel Hex Head Screw, High-Strength, M10 X 1.5 Mm Thread Size, 85 Mm Long	T#38452851	90854A158~BRP	YES
8	Zinc Yellow-Chromate Plated Steel Washer, Grade 8, For M10 Screw Size, 10.5 Mm ID, 18.0 Mm OD	T#38452852	90483A191~BRP	YES
2	JIS High-Strength Steel Flanged Hex Head Screw, M12 X 1.25 Mm Thread, 55 Mm Long	T#38452853	95735A122~BRP	YES
2	JIS High-Strength Steel Flange Nut, Class 10, Zinc Plated, M12 X 1.25 Mm Thread	T#38452854	95108A107~BRP	YES
2	ECS Heavy Duty Differential Bushing - E30, 318ti, Z3	T#30662812	055059LA01	YES
1	E30 Dual Mount Differential Cover	T#38452845	025993LA01~A	YES
1	Mounting Bracket	T#38452846	025993LA02~A	YES
1	Mounting Plate	T#38452847	025993LA04~A	YES
1	18-8 Stainless Steel Unthreaded Spacer, 16 Mm OD, 5 Mm Long, For M8 Screw Size	T#38452855	92871A837~BRP	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	E30	325	M20 2.7L	Use vehicle selector to confirm fitment
BMW	E30	325e	M20 2.7L	Use vehicle selector to confirm fitment
BMW	E30	325es	M20 2.7L	Use vehicle selector to confirm fitment
BMW	E30	325i	M20 2.5L	Use vehicle selector to confirm fitment
BMW	E30	325is	M20 2.5L	Use vehicle selector to confirm fitment
BMW	E30	325ix	M20 2.5L	Use vehicle selector to confirm fitment
BMW	E30	M3	S14 2.3L	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.

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188mm Dual-Mount Differential Cover With FREE Heavy Duty Differential Bushings - E30

Product Details

Kit Contents

Product Q&A

Lifetime Replacement

This Product Is Covered By Our Lifetime Replacement Program

Fits These Cars