Holley EFI's universal "cut-to-fit" spark plug wire set is built for GM LS engines. Each wire ships with the spark plug terminal and boot pre-installed, while the coil end is left unterminated with the coil boot and terminal included so you can trim to length and install on site.
Specifications:
- Application: GM LS (Gen III/IV) engines
- Wire Diameter: 8.2mm
- Resistance: 350 ohms per foot
- Boot Color: Red wire with gray, 135-degree coil-end boots
- Boot Material: Silicone
- Length: 36" unterminated for custom routing
- Terminals: Locking dual-crimp style
- Part Number: 561-112
FAQ
Why is the coil end left unterminated?
The 36" unterminated coil end lets you cut each wire to the exact length your install needs, then crimp on the included terminal.
What is the wire's resistance rating?
These wires offer a low 350 ohms per foot, which keeps noise suppression high while meeting or exceeding OE resistance specs.
What boot angle does this set use?
This set uses 135-degree gray coil-end boots on red wire.
What terminal style is used at the crimp end?
Locking dual-crimp style terminals are used to ensure a positive connection when installing the plug wire ends.

