Holley® 558-312 - HP Smart Coil Ignition Harness
Holley® 558-312 - HP Smart Coil Ignition Harness

558-312

Holley® (08-23) HP Smart Coil Ignition Harness

Regular price£155.35
/
Shipping calculated at checkout.
  • In stock, ready to ship
  • THIS PRODUCT IS CARB CERTIFIED
  • Question? Call us at (888) 257-1077 🏁
  • Free Shipping USA (Exc. HI, AK, PR)

Compatible: (6.2L)

2010 - 2021 Chevy Camaro

2008 - 2019 Chevy Corvette

 

For use with Holley HP or Dominator ECUs.
Off-Road Use Only. Shipping Restriction: CA, NY, ME 

 


 

Features:

HP Smart Coil ignition sub-harness. Includes a pair of coil harnesses for an 8 cylinder engine. These harnesses are similar in design to factory GM LSx coil harnesses, but plug into Holley HP Smart Coils. They plug into Holley LSx plug and play main harnesses if one wants to replace factory LSx coils with Holley HP Smart Coils. If using a non-LSx main harness, purchase PN 558-307 for connectors, wiring, terminals to connect directly to a Holley HP or Dominator ECU
  • Includes a pair of coil harnesses for an 8 cylinder engine
  • Similar to factory GM LSx coil harnesses
  • For use with Holley HP or Dominator ECUs

 

Install Guide:

 

Warranty:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Based on 11 reviews
64%
(7)
9%
(1)
9%
(1)
9%
(1)
9%
(1)
A
aFe® (99-07) GM SUV/Truck Magnum FORCE Stage-2 Cold Air Intake System
Alexandru P. (Portland, Oregon, United States)
It works great

The product works good I'm happy with my purchase

M
aFe® (11-23) Mopar SRT Momentum™ GT Air Intake System
Matthew G. (Van Nuys, California, United States)
Cold air intake

Very easy install with the cold air intake, and the power is definitely noticeable.

L
Katech® GM LSX Billet Belt Tensioner
Lou W. (Chandler, Arizona, United States)
Awesome product

Solved my belt slipping problem on high rpm track car. Thank you!

M
CompCams® (09-23) Mopar V8 Stage 2 HRT 220/230 Max Power Hydraulic Roller Master Cam Kit
Maximum_steelrt (Washington, District of Columbia, United States)
2017 Dodge Charger rt

Was the best upgrade I’ve done so far made it feel like a new engine and sounds amazing and definitely pulls a lot harder

J
Carbon Creations® (08-23) Challenger Redeye Style Rear Spoiler
John (Jersey City, New Jersey, United States)
Great Product!

Easy install and woke up my car!

Worth every penny

Works as described. I like the cruise control operation. Easy to go from fun to work mode.

E
10 Second Racing® Window Decal
ERIC D. (Atlanta, Georgia, United States)
AWESOME PRODUCT!!

It's great!!

S
Toyo® Proxes R888R DOT Competition Tire
Scargod (New Haven, Connecticut, United States)
Noisy and not sticky enough when pushed

I have run quite a few Hoosier R7's but wanted the size available in the 888R's for my new BRZ. For one thing, I had forgotten how noisy they are! I could live with that if they performed better on a dry track.
When pushed hard for 20+ minutes they eventually build up enough heat to start getting greasy and losing grip.
For many they will be adequate for track days, but I drive my cars too close to the limit. A better tire for me in the dry has been the Eagle Supercar F1 3R's.

J
RIPP® (05-23) Mopar V8 Performance Ignition Coil Packs
Jason g. (Melbourne, Victoria, Australia)
Haven't received them yet

As above

Not a fit

Unfortunately the belt did not fit, it was was too long, my fruend had a 2018 SRT, he had the same problem with his order.
The transaction process was easy, the belt seems like good quality, too bad it didn't fit

M
BBK® (16-23) Camaro SS Power-Plus Series® Cold Air Intake System
Mahari H. (El Cerrito, California, United States)

BBK® (16-23) Camaro SS Power-Plus Series® Cold Air Intake System