Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
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For more information, visit www.P65Warnings.ca.gov.
NOTES: These Harnesses are designed for retrofitting 03 - 07 Vortec engines (4.8, 5.3, 6.0-Liter) and 4L60E transmissions into older muscle cars and street rods. Harness allows use of Injectors (EV6). They are completely plug and play with four wire hookup (switched power, constant power and ground connections required). Harnesses are designed with a sliding grommet seal and 4 - 5 feet of length from the rear of the cylinder head to the PCM mounting position under the vehicle dashboard. A sliding grommet seal allows for professional, leak proof installation.
The harness fits my Vortec engine nicely, but I struggled a bit with the wiring instructions. They could’ve been a little clearer, especially for a newbie like me. It took some trial and error, but I finally got it working. If you're experienced with wiring, you might find it easier.
M
Maria Gonzalez
Good Product, But Packaging Issues
Overall, the wiring harness itself works well with my 4L60E and LS engine. I’m happy with the performance, but it arrived with some dents in the package which made me worry a bit. Thankfully, everything inside was intact. Just wish they’d put more care into the packaging.
L
Liam Chen
Perfect for my Chevy LS Build
I recently used this wiring harness for my Chevy LS build and I couldn't be happier. It was the right fit for my 5.3L V8 and connects flawlessly to the EV6 injectors. The quality is impressive, and installation went smoothly without any hiccups. Highly impressed!
S
Sofia Reyes
Arrived Damaged, Very Disappointed
Sadly, my wiring harness showed up with some of the connectors damaged. I was really counting on this for my LS3 project, and now it’s delayed. I hope I can get a replacement soon. Just a heads up, check for damage as soon as you get it!
J
Jake Thompson
Solid Wiring Harness for My LS Swap
I used this standalone swap wiring harness for my LS3 engine swap in a GMC truck. The connections were straightforward, and everything lined up perfectly. The quality feels durable, and it made the installation a breeze. Definitely a good choice for anyone looking to do an engine swap!
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Have a question ? We are here to help.
Is the shipping free?
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
