E36 M3 Street Flow Rear Diffuser
- Mfg Part #
- 047602LA01KT
- ECS Part #
- ES#4736871
- Brand
-
This product was last offered at the strikethrough price on
06-13-2026
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Product Details
The E36 M3 is an amazing looking car right out of the box but a common BMW issue is the height of the front vs rear bumpers. Dating as far back as the E30, BMW front bumpers have been much lower to the ground than the rear, and the E36 M3 suffers the same fate. This results in the rear bumper appearing incomplete, especially on lowered BMWs. Our add-on diffuser is a unique option for balancing out the rear bumper with the height of the front bumper for that level to ground appearance.
Give your M3 that wild style that stands out from the crowd, and obtain a nice balanced look in the process. This is just the start of our new line of Street Flow Diffusers that are a must have extension of your modified ride. Our diffusers come powder coated in a sleek satin-black finish, are a blast to install and fit seamlessly against the rear bumper for a professional looking install every time. The Street Flow diffuser attaches below your factory rear diffuser and exhaust of your choosing to fill out the rear end for a nice full and aggressive styling profile you're looking for.
Lets take a trip together down a new and unique path. Over the years we have designed factory replacement ABS and Carbon Fiber diffusers for all different models of BMW's. For the factory replacements our focus was to take the OEM characteristics and add our own dash of spice and really bring out a more aggressive look with a direct replacement diffuser. For our new line of diffusers, we here at ECS wanted to design a set of diffusers that really pushed the envelope and stepped outside of our comfort zone. Our new line of add-on diffusers is a result of our engineering team and fellow enthusiasts spending time to study the M3 chassis, modeling numerous different designs, testing prototypes and making changes to get a final product that we are extremely excited to offer. The E36 M3 Street Flow Diffuser is the first debut in our line of new diffusers. Stay tuned for the E92 M3 lower diffuser next!
Features:
- Adds an aggressive aesthetic in addition to the subtle factory rear diffuser
- Lightweight and durable 10ga aluminum in satin black powder coat to blend with the factory trim color
- Installation is secure and simple with ample adjustability built in for perfect fitment
Design:
- 10 ga 5052 aluminum construction
- Black satin powder coat for long term corrosion resistance
- 5 piece design to simplify installation
- Slotted mounting locations to allow for mounting adjustment
- Laser cut ECS logo
- Hidden color matched hardware for better aesthetic
Product Development:
Our ECS Street Style Diffusers are designed, engineered, tested and quality inspected by our Research and Development team in our Wadsworth, Ohio facility. We strive for the highest level of precision and quality through leading-edge product development technology including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modeling and rigorous long term product testing.
- 51122233364
- 51122235498
This Part Fits the Following Vehicles
| Make | Model | Submodel | Engine | Special Fitment Notes |
|---|---|---|---|---|
| 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 | |
|---|---|---|---|---|
| Metric Type 316 Stainless Steel Nylon-Insert Hex Locknut, M6 Size, 1mm Pitch, 10mm Width, 6mm Height |
|
2 | YES | |
| 316 Stainless Steel Oversized Washer For M6 Screw Size 6.4 Mm ID 18 Mm OD |
|
2 | YES | |
| Black Oxide SS Button Head M6 12mm Long - Each |
|
8 | YES | |
| E36 Metal Rear Diffuser |
|
1 | YES | |
| 18-8 Stainless Steel Button Head Hex Drive Screws |
|
2 | YES |
Installation
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New/Unused Product Returns
ECS Tuning will accept returns for unused products within 90 days of the ship date for a refund to the original payment method used. The customer is responsible for the return shipping costs and fees. If selecting to use a prepaid shipping label, the shipping cost will be deducted from the total refunded amount. All new/unused products must be new, unused and must be in the original packaging, including labeling, manuals, hardware, etc. Special order parts are non-refundable.
In the event that we find an error on our website or on behalf of an ECS Tuning Representative, we will provide a return shipping label from the original delivery location.
Refused Packages
Any domestic orders that are returned to ECS Tuning as refused by receiver or non-deliverable will be subject to a return handling fee and will be processed as a return in compliance with our standard return policy, including a 15% restocking fee.
Any international orders that are refused at the time of delivery will be subject to carrier abandonment of the package, at which time the ordered products would be discarded by the carrier. The customer will not be refunded for the value of the order and the discarded products are no longer retrievable.
Return Process
ECS Tuning now offers an online returns solution! To get started, simply log into your ECS Tuning account, Click the "View Orders" button on the My Account home page and select the order that you wish to make a return on to begin. If you have any questions, feel free to reach out to our Customer Service Team for assistance!
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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