

⚡️ Wire your LS1 swap like a pro—no guesswork, just power.
The 5.3 Wiring Harness by KASSEN is a high-quality, copper-based automotive wiring solution designed for LS1 4.8L, 5.3L, and 6.0L Vortec engines from 1997 to 2006. It features complete dash connections, an extended 36-inch length for flexible PCM mounting, and color-coded plugs for straightforward installation. Compatible with 4L60E transmissions, it comes with a detailed wiring guide and a lifetime warranty, ensuring reliable performance and support for professional engine swaps.
| ASIN | B09NDD3V71 |
| Best Sellers Rank | #119,652 in Automotive ( See Top 100 in Automotive ) #303 in Car Electrical Wiring Harnesses |
| Brand Name | Goopool |
| Cable Type | Automotive Wiring Harness |
| Connector Type | Dlc Port |
| Customer Reviews | 3.8 3.8 out of 5 stars (195) |
| Included Components | FALSE |
| Item Weight | 3.13 Kilograms |
| Manufacturer | KASSEN |
| Material Type | Copper |
| Model | LS14L60E-2 |
| Part Number | LS14L60E-2 |
| Unit Count | 1 Count |
N**T
UPDATE: After contacting the seller, they took responsibility and sent a replacement wiring harness. I tested the replacement and it works correctly. Their customer service was responsive and professional, and for that alone they deserve five stars. Bought this in August for an engine swap. From the start, the vehicle didn’t work correctly. I initially believed the issue was engine-related, but after months of troubleshooting, it turned out the real problem was the wiring harness. The harness had incorrectly configured wires from the factory, which made the issue difficult to diagnose.
C**.
YEAH NOPE I TRIED,, THIS HARNESS IS PINED WRONG IM SURE ITS A QA PROBLEM FROM FACTORY,, IF YOU ARE NOT EXPERENCED WITH THE RED AND BLUE ECU PINOUTS DO NOT BUY
A**Z
Wiring harness is perfect very well made perfectly packaged
A**T
Ordered as a replacement for a 1999 lm7 5.3 auto rwd truck. It could be made to work, but... Anyway, for the hundred bucks I am keeping it for parts or a stand alone swap later. Its set up for an F body car with the ECU in the cabin, Truck ECU is under hood with the boiling hot engine, its just how GM does things, anyway. Looks to be reasonably well made but read the fine print, it will require changes to things you might not want to deal with.
J**D
Ran this on a couple of LS swaps now, haven't run into any issues.
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