This Speed Engineering adapter harness allows an LS2 or truck style ignition coil to plug into an LS1 vehicle or engine wiring harness. It plugs into the factory harness connector. The adapter is sold individually, and one adapter is needed for each ignition coil, so a complete V8 swap requires eight.
⚠️ Important Notes:
- One adapter harness is required for each ignition coil (quantity 8 for a complete swap)
- Works with D581 (12558693), D585, D513A (12570616), D514A (12573190), and MSD 82478 ignition coil packs
Features:
- Adapts LS1 Harness to LS2/Truck Ignition Coil
- Factory Harness Plug-In
- Compatible Coils: D581 (12558693), D585, D513A (12570616), D514A (12573190), MSD 82478
- Sold Individually: Quantity 8 needed for a complete swap
FAQ
What does this adapter harness do?
It allows an LS2 or truck style ignition coil to plug into an LS1 vehicle or engine wiring harness.
How many do I need?
One adapter is needed for each ignition coil. A complete swap on a V8 requires eight adapters, and each is sold individually.
Which ignition coils does it work with?
It works with D581 (12558693), D585, D513A (12570616), D514A (12573190), and MSD 82478 ignition coil packs.
Does it plug into the factory harness?
Yes. The adapter plugs into the factory LS1 coil harness connector.
Is this part street legal?
No. Speed Engineering sells this adapter harness as a race-only product intended for competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).
⚠️ Race Use Only: This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).
