1. Spike Performance
  2. 558-103 LS2/3/7+ (58X/4X) ENGINE MAIN HARNESS
558-103 LS2/3/7+ (58X/4X) ENGINE MAIN HARNESS
spike-performance.com
Vehicles & Parts / Vehicle Parts & Accessories

558-103 LS2/3/7+ (58X/4X) ENGINE MAIN HARNESS

$659.99
{{option.name}}: {{selected_options[option.position]}}
{{value_obj.value}}
Store Logo

Spike Performance

View Store

LS2/3/7+ (58x/4x) Engine Main Harness for HP EFI & Dominator EFI

Show More Show Less

Price History

$584.99 $659.99 (+$75)
October 20, 2025

More products by Spike Performance

Main Power Harness - Spike Performance
spike-performance.com
$99.99

Main Power Harness

Spike Performance Spike Performance
LSX INJECTOR HARNESS - FOR EV6 STYLE INJECTORS - Spike Performance
spike-performance.com
$150.00

LSX INJECTOR HARNESS - FOR EV6 STYLE INJECTORS

Spike Performance Spike Performance
Chevrolet Performance LS Rear Main Seal Housings - Spike Performance
spike-performance.com
$85.00

Chevrolet Performance LS Rear Main Seal Housings

Spike Performance Spike Performance
ARP Main Studs 234-5608 - Spike Performance
spike-performance.com
$265.00

ARP Main Studs 234-5608

Spike Performance Spike Performance
View All