This Holley HyperSpark ignition kit bundles the Jeep 258 CID I6 HyperSpark distributor with a matched ignition box, ignition coil, and main harness for the simplest ignition upgrade available on a Sniper 1 EFI equipped engine. The harness requires only four connections — switched 12V, battery+, battery-, and fuel pump power — with pre-terminated connectors and a built-in 40A relay routing power to every component, eliminating the need to run separate wires to each part.
Specifications:
- Application: Jeep 258 CID I6
- Distributor Type: Hall Effect
- Rotor Rotation: Clockwise (Right)
- Housing Finish: Polished
- Gear Material: Cast Iron
- Distributor, Distributor Cap, Distributor Gear, Ignition Box, Ignition Coil, Ignition Module, and Ignition Rotor Included: Yes
- Sub Category: Distributor and Magneto
- Warranty: Manufacturer's Limited 1 Year Warranty
- Part Number: 565-307K
Kit includes distributor (565-307), ignition box (565-151), ignition coil (565-152), and main harness (558-328). Designed for Sniper 1 EFI only — new installations will not use the Sniper 1 harness or coil driver, since the new main harness retains the same lead wire colors. Consult your camshaft manufacturer to confirm gear material compatibility before installation.
FAQ
What's included in this HyperSpark ignition kit?
The kit includes the Jeep 258 CID I6 HyperSpark distributor (565-307), ignition box (565-151), ignition coil (565-152), and main harness (558-328).
How many connections does the main harness require?
Just four: switched 12V, battery+, battery-, and fuel pump power. Pre-terminated connectors and a built-in 40A relay handle the rest.
Is this kit compatible with Sniper 2 EFI?
No, this kit is designed for Sniper 1 EFI installations only.
What ignition coil energy does this kit deliver?
The HyperSpark ignition coil delivers 135mJ of spark energy per combustion event.

