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ECS Tuning - Audi B8 S4 / A4 S-Line Rear Diffuser - Gloss Black - ES#4033487
Upgrade your exterior styling with the ECS Tuning Gloss Black Rear Diffuser for your pre-facelift B8 S4 or A4 S-Line. This diffuser was engineered and designed in-house to add a more aggressive appearance to the rear of your vehicle that matches with the factory appeal of your Audi. An exclusive design only available through ECS Tuning, this rear diffuser will be sure to catch attention and turn heads. The diffuser is crafted of a UV stabilized ABS polymer to achieve it's deep high gloss shine and provides an aggressive and sporty style that's sure to set your vehicle apart from the rest. Features a dual tip/dual outlet design to fit the factory and most aftermarket exhaust systems and is designed to accept exhaust tips up to 4" in diameter.
Installs with no drilling, cutting, or modification of any kind required. Simply remove your currently installed valance and install the diffuser using the factory mounting locations and hardware. Make sure all tabs are lined up and lightly press the diffuser in place until the tabs click into position.
To compliment the look of your new diffuser, check out the other ECS gloss black exterior products!
| Make | Model | Submodel | Engine |
|---|---|---|---|
| Audi | B8 A4 | FWD | 2.0T |
| Audi | B8 A4 | Quattro | 2.0T |
| Audi | B8 A4 | Quattro | V6 3.2L |
| Audi | B8 S4 | Quattro | 3.0T |
When Will This Ship?
Please confirm availability on the products page...
In Stock This product will ship within one business day. Available for local pickup in Québec, Canada.
Direct Ship Subject to supplier' stock. Orders typically ship within 2 to 3 business days.
Regularly Stocked Product This product is in stock from our supplier. Orders typically ship within 6 to 12 business days.
Warehouse Transfer Subject to supplier' stock. Orders typically ship within 6 to 12 business days.
On Order This item is on its way to our warehouse.
Back Order This part is back-ordered therefore shipping time will vary.
No Longer Available The manufacturer no longer sells this item, and we can no longer get it from any of our suppliers.
*The processing time and availability are subject to the suppliers’ stock.
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Feel free to reach out before placing your order if you need it faster or require further assistance! 😊
Free Shipping
All orders of $499 or more being shipped within Canada qualify for free standard shipping. Additionally, orders less than $499 qualify for an exclusive low shipping rate.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
In-Stock Products
In Stock
Items marked as "In Stock" are physically in our facility, so they're ready to ship when the order is placed. If all items in your order are "In Stock", then your order typically ships within one business day.
Other Availability Modes
We use several availability modes to most accurately identify when products will leave their home facility:
Direct Ship This product is available and will be sourced from one of our suppliers. It may take up to three business days before it ships.
Warehouse Transfer We receive the item, then we ship it to remain on time with the guaranteed delivery range chosen at checkout. It typically takes between 6 and 12 business days before it ships.
Discontinued - No longer available This product has been discontinued by the manufacturer and is no longer available.
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Additionally, on each product page, we have a tab for fitment information. By clicking on "Fitment", you can scroll and verify the part you are about to add to your cart indeed fits.
Furthermore, if you have a vehicle added to our vehicle selector and you are viewing a product page, you'll see fitment information below the "add to cart" button. If an item fits your car it will display "This Part Fits Your: Selected Vehicule". If an item does not fit your vehicle a message will display "This Part Does Not Fit".
A “Core Charge” is similar to the deposit you might pay for a can or bottle of soda. In many states, to promote recycling, you are charged a deposit when you purchase a can of soda and you receive your deposit back when you return the empty can. Many automotive parts have Core Charges that work the same way as a soda can deposit. The most common car parts that include a core charge are alternators, calipers, steering racks, and fuel injectors.
"MAP" pricing, or Minimum Advertised Pricing, means that the vendor set a minimum retail price that we're not allowed to violate. MAP items cannot be discounted because the decrease in price would violate that threshold.
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