SPDZ1 Upgraded LS Ignition Coil Harness – High-Performance Replacement (Sold Per Cylinder Head)
SHIPPING - RETURNS - WARRANTY - CANCELLATION POLICY
*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314
Frequently Asked Questions
SKU: SPDZ1-LS-ICH-1
SPDZ1 Upgraded LS Ignition Coil Harness – Sold Per Cylinder Head (One Side)
Upgrade your LS engine with the SPDZ1 Ignition Coil Harness, engineered with better-than-stock wiring for improved durability and performance. Whether you’re replacing a worn factory harness or preparing for an engine swap, this harness delivers reliability you can trust.
Built with factory-style connectors and weatherproof rubber seals, it ensures a secure, moisture-resistant connection for long-term use in demanding environments. Perfect as a replacement, an upgrade, or a spare to keep on hand for your LS project.
Key Features:
-
Designed for GM LS engines
-
High-quality wiring – stronger than OEM
-
Factory-style connectors for plug-and-play fitment
-
Weatherproof rubber seals for maximum protection
-
Ideal for replacements, upgrades, or engine swaps
-
Sold per cylinder head (per side)
Get the dependable performance your LS build deserves with the SPDZ1 Ignition Coil Harness.
Compatibility:
- Guaranteed fit with GM coils: D510C (12570616) and D514A (12573190)
- May also work with: D581 (12558693), D585, D513A (12570616), MSD 8287, 12619161
⚠️ Important: Always double-check connections to confirm fitment with your specific factory harness and ignition coils.
Our History
For 23 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.