Engine Wiring Harnesses
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Original price $196.15 - Original price $196.15Original price $196.15$225.95$225.95 - $225.95Current price $225.95Holley HLY558-191 Sniper 2 Main Harness w/Fuel Pump Relay
HolleyDescription: The Holley HLY558-191 Sniper 2 Main Harness with Fuel Pump Relay is designed for use with the Sniper 2 EFI system. This wiring harness...
View full detailsOriginal price $196.15 - Original price $196.15Original price $196.15$225.95$225.95 - $225.95Current price $225.95 -
Original price $134.95 - Original price $134.95Original price $134.95$155.95$155.95 - $155.95Current price $155.95Holley HLY558-190 Sniper 2 Main Harness For PDM
HolleyDescription: The Holley HLY558-190 Sniper 2 Main Harness is designed for use with the Sniper 2 EFI system and the Power Distribution Module (PDM). ...
View full detailsOriginal price $134.95 - Original price $134.95Original price $134.95$155.95$155.95 - $155.95Current price $155.95 -
Original price $151.15 - Original price $151.15Original price $151.15$173.95$173.95 - $173.95Current price $173.95
Holley HLY558-132 Sub-Harness Mopar Gen-3 Hemi VVT & SRV
HolleyDescription: The Holley HLY558-132 Sub-Harness is designed specifically for the Mopar Gen-3 Hemi engines, featuring Variable Valve Timing (VVT) and...
View full detailsOriginal price $151.15 - Original price $151.15Original price $151.15$173.95$173.95 - $173.95Current price $173.95Sold out -
Original price $505.95 - Original price $505.95Original price $505.95$584.95$584.95 - $584.95Current price $584.95Holley HLY558-128 Engine Main Harness Ford 5.0L/5.8L
HolleyDescription: The Holley HLY558-128 Engine Main Harness is designed specifically for Small Block Ford engines, including the 5.0L and 5.8L variants....
View full detailsOriginal price $505.95 - Original price $505.95Original price $505.95$584.95$584.95 - $584.95Current price $584.95 -
Original price $213.25 - Original price $213.25Original price $213.25$249.95$249.95 - $249.95Current price $249.95
Holley HLY558-127 Bench-Top EFI Test Harness
HolleyDescription: The Holley HLY558-127 Bench-Top EFI Test Harness is designed for testing EFI systems in a controlled environment. This wiring harness ...
View full detailsOriginal price $213.25 - Original price $213.25Original price $213.25$249.95$249.95 - $249.95Current price $249.95Sold out -
Original price $736.95 - Original price $736.95Original price $736.95$849.95$849.95 - $849.95Current price $849.95Holley HLY558-116 Main Wire Harness Hemi Late W/ TPS & IAC
HolleyDescription: The Holley HLY558-116 Main Wire Harness is designed for use with Mopar Gen III Hemi engines. This wiring harness is specifically confi...
View full detailsOriginal price $736.95 - Original price $736.95Original price $736.95$849.95$849.95 - $849.95Current price $849.95 -
Original price $718.95 - Original price $718.95Original price $718.95$849.95$849.95 - $849.95Current price $849.95
Holley HLY558-108 Main Harness 99-04 Ford Modular Engine
HolleyDescription: With a focus on quality and precision, this harness is built to meet the demands of modern automotive applications. Key Features: ...
View full detailsOriginal price $718.95 - Original price $718.95Original price $718.95$849.95$849.95 - $849.95Current price $849.95Sold out -
Original price $493.95 - Original price $493.95Original price $493.95$571.95$571.95 - $571.95Current price $571.95Holley HLY558-105 Main Harness - Univesal Un-Terminated
HolleyDescription: The Holley HLY558-105 Main Harness is a universal unterminated wiring harness designed for use with Holley HP and Dominator EFI system...
View full detailsOriginal price $493.95 - Original price $493.95Original price $493.95$571.95$571.95 - $571.95Current price $571.95 -
Original price $493.95 - Original price $493.95Original price $493.95$571.95$571.95 - $571.95Current price $571.95Holley HLY558-104 Main Harness - Universal MPFI
HolleyDescription: The Holley HLY558-104 Main Harness is designed for use with multi-port fuel injection (MPFI) systems. Key Features: Universal MP...
View full detailsOriginal price $493.95 - Original price $493.95Original price $493.95$571.95$571.95 - $571.95Current price $571.95 -
Original price $583.95 - Original price $583.95Original price $583.95$675.95$675.95 - $675.95Current price $675.95Holley HLY558-103 Main Wiring Harness LS2 & LS3
HolleyDescription: The Holley HLY558-103 Main Wiring Harness is designed for use with LS2, LS3, and LS7 engines. This EFI wiring harness is compatible wi...
View full detailsOriginal price $583.95 - Original price $583.95Original price $583.95$675.95$675.95 - $675.95Current price $675.95 -
Original price $583.95 - Original price $583.95Original price $583.95$675.95$675.95 - $675.95Current price $675.95Holley HLY558-102 Main Wiring Harness LS1 & LS6
HolleyDescription: The Holley HLY558-102 Main Wiring Harness is designed for use with LS1 and LS6 engines, specifically tailored for Holley HP and Domina...
View full detailsOriginal price $583.95 - Original price $583.95Original price $583.95$675.95$675.95 - $675.95Current price $675.95 -
Original price $583.95 - Original price $583.95Original price $583.95$675.95$675.95 - $675.95Current price $675.95
Holley HLY558-101 TPI Stealth RAM Main Harness
HolleyDescription: The Holley HLY558-101 TPI Stealth Ram Main Harness is designed for use with various GM applications. This EFI wiring harness is compat...
View full detailsOriginal price $583.95 - Original price $583.95Original price $583.95$675.95$675.95 - $675.95Current price $675.95Sold out
