B7 A4 2.0T Ignition Harness Replacement Kit
- Mfg Part #
- 054015LA01KT
- ECS Part #
- ES#4858385
- Brand
-
This product was last offered at the strikethrough price on
06-13-2026
Free Shipping
Product Details
It is not uncommon for the ignition coil pack wiring and connectors to become brittle over time and start to crack or break apart, leaving you with exposed wires or connectors that won't secure to the coil packs. This can lead to misfires, difficulty starting, a rough idle, lack of acceleration, decreased fuel mileage, and other causes for concern.
ECS Tuning has recognized this issue. We put our industry-leading R&D team to work, creating an easy-to-install Ignition Wiring Replacement Harness with full installation instructions—no need to repair individual wires or buy an expensive engine wiring harness. Our replacement wiring harness requires you to cut your factory engine harness and re-pin the wiring into the provided male connector, then plug in the ECS replacement harness, connect your coils, and be on your way. No need to worry about how long you have until the OEM wiring finally decides to give out, with ECS Tuning's Ignition Wiring Replacement Harness Kit you can make a clean and solid repair in no time!
FEATURES
- This comprehensive kit replaces your old, brittle, and likely failing factory coil pack harness.
- P-clips are provided to keep your harness tucked up close to the valve cover, keeping it away from hot engine bay componentry.
- Provides all necessary provisions and detailed instructions for re-pinning your factory ignition harness, ensuring a quick and simple installation.
DESIGN
- Heatshrink junctions are strategically positioned for ample flexibility and strain relief.
- Flexible connector boots allow easy removal of individual coil packs, a much-needed improvement on the factory rigid-bar design.
- The overall harness length was designed to make the pinning location of factory connectors accessible to users of all skill levels.
KIT CONTENTS
- Ignition Coil Wiring Harness (1)
- Ignition Coil Wiring Harness Components
- Plug/Connector Housing (1)
- Female Connector Terminal (20)
- Wire Seal (16)
- Bremmen Parts Wire Harness Retainer Clamps (2)
PRODUCT DEVELOPMENT
Our B7 A4 2.0T Ignition Harness Replacement Kit was 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.
INSTALLATION AND SUPPORT
Check out our in-depth instructional PDF, located under the Installation Tab on the product page. It features complete step-by-step guidance with detailed photos for repairing your vehicle properly.
- 4B0973724, 4B0-973-724, 4B0 973 724
- 06F971824C, 06F-971-824-C, 06F 971 824 C
- 07K905715F, 07K-905-715-F, 07K 905 715 F
This Part Fits the Following Vehicles
| Make | Model | Submodel | Engine | Special Fitment Notes |
|---|---|---|---|---|
| Audi | B7 A4 | FWD | 2.0T | Use vehicle selector to confirm fitment |
| Audi | B7 A4 | Quattro | 2.0T | Use vehicle selector to confirm fitment |
Kit Contents
| Description | Brand | Qty | Lifetime | |
|---|---|---|---|---|
| Wiring Conduit Bolt - Priced Each |
|
2 | YES | |
| B7 2.0T Ignition Coil Wiring Harness |
|
1 | YES | |
| Vibration-Damping Loop Clamp |
|
2 | YES | |
| B7 2.0T Ignition Harness Components |
|
1 | YES |
Installation
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!
Return and Exchanges
Need to set up a return? Click here to begin: Return Process
All you need is your order number and email address.
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
Want to know more about our Lifetime Replacement program?
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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