E36 Heavy Duty 14mm Performance Polyurethane Differential Bushing Set
- Mfg Part #
- 059071LA04KT2 059071LA04KT2
- ECS Part #
- ES#5516695
- Brand
-
Product Details
Take absolute control of your BMW E36’s drivetrain with the ECS Tuning Complete Performance Polyurethane Differential Bushing Kit. Factory rubber differential bushings permit excessive deflection under load, muting throttle response and introducing unwanted rear-end slop. Over time, heavy torque output twists the differential, placing severe stress on the factory M12 mounting hardware. This comprehensive kit addresses both front and rear mounting points to lock down differential movement, sharpen power delivery, and provide a responsive chassis feel.
By combining two targeted polyurethane durometers, this kit strikes an ideal balance between street usability and performance rigidity. The high-stress front mount utilizes a rigid 95A durometer red polyurethane bushing paired with an upgraded, high-tensile Grade 12.9 M14x1.5 bolt, stepping up from the failure-prone factory M12 hardware to eliminate differential twist under launch. Supporting the rear position is a set of 88A durometer polyurethane bushings engineered to dampen chassis vibration while offering superior resistance to chemical degradation, road salt, and ozone wear. Precision CNC-machined 6061-T6 billet aluminum sleeves with Type II black anodizing deliver long-lasting corrosion protection and an OEM+ aesthetic.
FEATURES
Complete Drivetrain Lockdown: Replaces soft front and rear factory differential bushings with high-performance polyurethane to minimize deflection and sharpen power transfer.
Heavy-Duty Front Mount Upgrade: Steps up from stock M12 hardware to a high-tensile Grade 12.9 M14x1.5 bolt to prevent hardware bending and differential twist.
Optimized Dual-Durometer Setup: Firm 95A red polyurethane front bushing handles heavy torque loads, while 88A rear bushings control movement without solid-mount harshness.
Precision Construction: CNC-machined 6061-T6 aluminum inner sleeves with Type II black anodizing for maximum durability and corrosion resistance.
Extended Service Life: Polyurethane compound outlasts factory rubber against road grime, salt, and atmospheric breakdown. Includes a 5mL packet of specialized polyurethane grease.
INSTALLATION & DEVELOPMENT
Upgrading the front differential mount to M14x1.5 hardware requires drilling and tapping the factory M12x1.5 differential mounting hole.
Looking for installation tips? We put together a detailed start-to-finish installation guide! See our Installation PDF under the "INSTALLATION" Tab for more information.
Our E36 Heavy Duty 14mm Performance Polyurethane Differential Bushing Set was developed in-house, tested, and inspected by our Research & Development team in our Wadsworth, Ohio facility. We strive for the highest level of precision and quality through leading-edge product development technology and methods, ensuring the necessary long-term product testing was performed on multiple test vehicles in the harshest conditions available.
- 33176760337
- 33171134871
- 33171134872
- 33171136186
This Part Fits the Following Vehicles
| Make | Model | Submodel | Engine | Special Fitment Notes |
|---|---|---|---|---|
| BMW | E36 | 318i | M42 1.8L | Use vehicle selector to confirm fitment |
| BMW | E36 | 318i | M44 1.9L | Use vehicle selector to confirm fitment |
| BMW | E36 | 318ic | M42 1.8L | Use vehicle selector to confirm fitment |
| BMW | E36 | 318ic | M44 1.9L | Use vehicle selector to confirm fitment |
| BMW | E36 | 318is | M42 1.8L | Use vehicle selector to confirm fitment |
| BMW | E36 | 318is | M44 1.9L | Use vehicle selector to confirm fitment |
| BMW | E36 | 323ic | M52 2.5L | Use vehicle selector to confirm fitment |
| BMW | E36 | 323is | M52 2.5L | Use vehicle selector to confirm fitment |
| BMW | E36 | 325i | M50 2.5L | Use vehicle selector to confirm fitment |
| BMW | E36 | 325ic | M50 2.5L | Use vehicle selector to confirm fitment |
| BMW | E36 | 325is | M50 2.5L | Use vehicle selector to confirm fitment |
| BMW | E36 | 328i | M52 2.8L | Use vehicle selector to confirm fitment |
| BMW | E36 | 328ic | M52 2.8L | Use vehicle selector to confirm fitment |
| BMW | E36 | 328is | M52 2.8L | Use vehicle selector to confirm fitment |
| BMW | E36 | M3 | S50 3.0L | Use vehicle selector to confirm fitment |
| BMW | E36 | M3 | S52 3.2L | Use vehicle selector to confirm fitment |
Kit Contents
| Description | Brand | Qty | Lifetime | |
|---|---|---|---|---|
| Performance Polyurethane Differential Bushing Set - Rear Position |
|
1 | YES | |
| M12x1.5x40-12.9 Black Zinc Socket Head Cap Screw |
|
2 | YES |
Installation
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Return Process
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Please note: Refunds will be processed to the original payment method used on the order or to an in store credit, respective to the type of return that is made as well as any pre-existing arrangements with an ECS Tuning Customer Service Representative. In the event that multiple forms of payment were used, we will refund the value to an in store credit. In the event that a return label is provided, these charges may be deducted from the total refund you receive.
Original shipping costs are non-refundable and the buyer is responsible for return shipping charges. ECS Tuning will not accept COD deliveries.
All in store credit balances will expire after one year from the original purchase date.
Shipping Policy
Free Shipping On Orders $49 & Up
Items marked with a 'Free Shipping On Orders $49 and Up' logo may qualify for free standard economy ground shipping to the contiguous United States (48 states) for most orders with a value greater or equal to $49.00 USD. Oversized products and direct ship products are excluded from this offer unless otherwise noted.
Free Shipping
Items marked as 'Free Shipping' may qualify for free standard economy ground shipping to the contiguous United States (48 states). Oversized products and direct ship products are excluded from this offer unless otherwise noted.
The policies listed above are subject to change at any time without notice.
Lifetime Replacement
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Click here to learn more.
Why You Should Shop From ECS Tuning
ECS Tuning stands out as more than an automotive parts supplier-it's a vibrant community fueled by a shared passion for cars. Born from the enthusiasm of car lovers, we offer an unmatched understanding and commitment to the automotive world, providing high-quality parts and accessories sourced from our own experiences. Our selection is meticulously crafted to meet the highest standards of performance, quality, and design, catering to both the latest trends and classic styles.
Our distinct advantage lies in our passionate team and comprehensive support, offering expert advice and seamless service from selection to installation. Shopping with ECS brings exclusive perks, including our Lifetime Replacement Guarantee and free shipping on orders over $49, enhancing the value of every purchase. As a central hub for car enthusiasts, ECS Tuning fosters a rich community where ideas and experiences flourish, transforming us from a mere supplier into a platform where automotive dreams come to life.
Cancellation Policy
At ECS Tuning, we understand that plans can change. That's why we offer a flexible cancellation policy for our customers. You may cancel your order at any time before you receive the shipment confirmation. This policy is designed to provide you with peace of mind and the flexibility to make adjustments to your purchases as needed. Should you decide to cancel your order, simply reach out to our customer service team, and we will assist you with the process swiftly and efficiently.
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