Wiring Adapter - 4L70E Harness to 4L80E Transmission

Wiring Adapter - 4L70E Harness to 4L80E Transmission

Marsoni

M251S

$144.99

Get it in 3 business days with 1 day shipping. Friday, May 29

Wiring Adapter - 4L70E Harness to 4L80E TransmissionLS Transmission Adapter Harness Put a 4L80E in your vehicle easily with this adapter harness (requires tune for segment swap) Sealed, crimped and assembled in Wichita Kansas, with USA made, OEM grade, TXL wire Every assembly is individually hand tested to ensure it exceeds OEM standards Compatible with GM 4L65E & 4L70E vehicles (2006 2008) (connects to 4L80E transmission) 18" length Includes: 1 transmission adapter harness with vehicle speed sensor

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Absolutely thrilled with this purchase! We were looking for something both stylish and practical for a summer wedding, and this hit the mark perfectly. It was incredibly affordable, which was a bonus, but what really impressed us was the comfort and quality. My fiancé wore it all day in the summer heat and didn’t feel weighed down or overheated—thanks to the light, breathable, and sweat-wicking fabric. The fit was spot on and looked tailored right out of the package. Plus, the pattern was exactly as pictured—crisp, vibrant, and modern. A great option for weddings, outdoor events, or any warm-weather occasion. Highly recommend!

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Reviewed in the United States on June 26, 2025