Michigan Motorsports GM Ignition Coil Harness Connector for LQ9/LQ4/LS2/LS3/LS7 – Truck Applications
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Description
xReliable replacement for aging GM ignition harnesses
Over time, stock ignition coil harnesses can become brittle, crack, or lose connectivity. Michigan Motorsports offers a direct replacement crafted to fit a wide range of GM V8 truck engines. This harness replaces GM 89017477 in many applications, helping keep ignition wiring organized and protected under the hood.
What this fits
Designed for GM LQ9, LQ4, LS2, LS3, LS7, LSX engines and the coil packs used on most trucks. The kit includes two harnesses for a full set, which aligns with the common approach for dual-bank installations.
- Direct replacement for 89017477
- Compatible with LQ9/LQ4 and LS family coil packs
- Fits 4.8L, 5.3L, 6.0L, 6.2L, 7.0L configurations
- Includes two harnesses for a complete set
Durability and fit
The new harness kit uses robust wiring and connectors designed to withstand under-hood heat and vibration. It aims to reduce brittle failures and deterioration common with aging OEM harnesses, helping maintain clean connections in challenging environments.
- Direct-fit connectors for straightforward installs
- Clear color-coded wire guidance during installation
Color-coded wiring and installation tips
Color-coded information helps map the second wire on the coil connector to the correct firing sequence. Purple goes to cylinders 1 or 8, Red to 2 or 7, Blue to 3 or 6, and Green to 4 or 5. Record the color scheme before wiring for reference.
Real-world use and benefits
In practice, a refreshed harness can restore reliable coil-to-spark connections, improve wire routing, and reduce the risk of unplugged or loose connections during service or driving. Benefits are described as possibilities rather than guarantees, depending on vehicle condition and installation accuracy.
Notes for use: Choose quantity 2 for a full set on two banks. Follow factory routing and avoid exposure to excessive heat during installation. This kit provides a practical option for owners looking to refresh aging wiring and maintain a clean under-hood setup without altering engine electronics.
FAQ
Q: What engines and coil packs does this harness fit?
A: Fits GM LQ9/LQ4, LS2/LS3/LS7/LSX, and most truck coil packs; verify compatibility with your setup.
Q: Should I buy more than one harness?
A: The listing suggests choosing quantity 2 for a full set across two banks; installation guidance is included.
Shipping & Return
xReturns Policy
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.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
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.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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