D4 4.0T Upgraded Turbo Inlets
- Mfg Part #
- 037968LA01KT
- ECS Part #
- ES#4849833
- Brand
-
This product was last offered at the strikethrough price on
06-13-2026
Free Shipping
Product Details
Elevate your Audi D4's performance with ECS Cast Aluminum Turbo Inlets, specifically designed to complement the ECS Luft-Technik Intake (ES#4849832). These inlets are meticulously crafted with diameter-matched steps in the intake tract to ensure seamless airflow, optimizing the efficiency of each turbocharger. Durable cast aluminum construction guarantees long-lasting reliability and minimizes airflow disruption, with an ID of 57mm at the compressor housing and 70.2mm at the inlet opening. This careful design maintains the largest possible diameter throughout the flow path, resulting in maximum airflow to your turbochargers. Our kit includes high-quality sealing o-rings and new mounting hardware for an easy, secure installation.
To adapt our upgraded inlets to the intake system, we've included exact-fit silicone turbo inlet couplers that are constructed from fiber-reinforced, 4-ply silicone. These couplers are built to resist collapsing under vacuum, ensuring consistent airflow under all conditions. Each inlet adapter hose features a massive 91mm ID where the coupler meets the intake, providing an unobstructed path for air, reducing intake restrictions, and promoting airflow. Each coupler is paired with stainless steel worm-drive hose clamps, ensuring a secure and leak-free connection. The sleek gloss black finish not only adds a clean, polished look to your engine bay but also enhances its overall aesthetic appeal.
To ensure reliability and precise fitment with our upgraded inlets, we've also included silicone PCV and diverter valve hoses. These fiber-reinforced, 4-ply silicone hoses are designed to replace the brittle OEM rubber hoses, offering increased strength and resistance to heat and vacuum collapse. Their superior construction ensures a reliable, leak-free operation for your engine's PCV and diverter system, helping maintain optimal pressure and airflow. Complete with stainless steel worm-drive hose clamps, these hoses guarantee a firm seal, keeping your engine bay both clean and efficient while offering peace of mind that comes with an upgraded, high-quality component.
FEATURES
- ECS Cast Aluminum Turbo Inlets
- Specifically crafted to fit Audi D4 A8 4.0T (with ECS Luft-Technik Intake [ES#4849832]) and Audi D4 S8.
- Diameter-matched steps in the intake tract provide a smooth airflow path throughout the entire length of each inlet
- Durable cast aluminum construction
- 57mm ID at the compressor housing
- 70.2mm ID at the opening of the inlet, maintaining the largest possible diameter throughout the flow path
- Includes new sealing o-rings and mounting hardware
- ECS Silicone Turbo Inlet Couplers
- Fiber-reinforced 4-ply construction prevents collapsing under vacuum
- Features a massive 91mm ID where the coupler meets the intake, ensuring maximum airflow
- Includes stainless steel worm-drive hose clamps for a reliable seal
- The sleek gloss black appearance adds a touch of style to your engine bay!
- ECS Silicone PCV/Diverter Hoses
- Fiber-reinforced 4-ply construction prevents collapsing under vacuum
- Designed to replace OEM rubber hoses while providing increased durability and peace of mind
- Includes stainless steel worm-drive hose clamps for a reliable seal
INSTALLATION & SUPPORT
Need installation tips? We put together a full installation tutorial from start to finish, including detailed instructions for removing your OEM parts! See our Installation PDF under the "INSTALLATION" tab for more information.
PRODUCT DEVELOPMENT
Our D4 4.0T Turbo Inlets were 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, rapid prototyping utilizing our in-house 3D printer, and rigorous long-term product testing.
Not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.
- 079 129 571 P
- 079 129 572 N
This Part Fits the Following Vehicles
| Make | Model | Submodel | Engine | Special Fitment Notes |
|---|---|---|---|---|
| Audi | A8 | D4 | 4.0T | For use with ECS Luft-Technik Performance Intake System only (ES#4849832) |
| Audi | D4 A8 | Quattro | 4.0T | For use with ECS Luft-Technik Performance Intake System only (ES#4849832) |
| Audi | D4 S8 | Quattro | 4.0T | Use vehicle selector to confirm fitment |
Kit Contents
| Description | Brand | Qty | Lifetime | |
|---|---|---|---|---|
| 6mm S/Steel Flat Washer |
|
4 | YES | |
| Allen Bolt (5mm) - Priced Each |
|
4 | YES | |
| 18-8 Stainless Steel Serrated Flange Locknut, M6 X 1 Mm Thread |
|
1 | YES | |
| O-Ring Super-Resilient, 1.5 Mm Wide, 59 Mm ID |
|
2 | YES | |
| D4 4.0T Cast Turbo Inlets Package |
|
1 | YES | |
| Silicone Hose Package |
|
1 | YES | |
| Silicone Couplers Package |
|
1 | YES |
Installation
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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.
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