Skip to content
Availability:
4+ in stock

Holley EFI 558-321 LS Ignition Coil Harness; Factory Replacement For Stock LS Coils;

SKU ds_BBVL_558-321
Proudly Canadian

Albertan Owned

Supporting Canadian truckers since 2018
Secure Payments

Financing Available

SSL encrypted checkout with financing options
Trusted Brands

Top-Quality Suppliers

Authorized dealer for Fox, Bilstein, BFGoodrich & 50+ brands
Original price $295.64 - Original price $295.64
Original price $295.64
$295.64
$295.64 - $295.64
Current price $295.64
Description
Are you tired of scouring the junkyard for stock ls coil harnesses? Introducing the new Holley EFI LS Coil Harness. This coil harness is intended to be used with factory LS coils and various Holley EFI main harnesses with Coil-on-plug connectors. The Holley EFI LS coil harnesses are built with the same high quality connectors and wire loom found on all Holley EFI harnesses, guaranteeing a perfect match in your engine bay.
Resources
Installation Instructions

Specifications

Description_ASC Holley Performance Emission Code 4: This part is legal for sale or use on Racing Use Only Vehicles. The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street. WARNING: It is against the law to install this part on an Emissions Controlled Vehicle
Description_DEF Ignition Coil Assembly Wiring Harness
Description_DES LS Ignition Coil Harness
Description_EXT LS Ignition Coil Harness; Factory Replacement For Stock LS Coils;
Description_FAB Can Be Used To Replace Damaged Factory Coil Harness
Description_FAB Genuine OEM Connectors
Description_FAB OEM Connectors Provide Secure Connection Between ECU/Coils
Description_FAB Plug and Play Fitment
Description_FAB TechFlex F6 Braided Wire Loom Keeps Engine Bay Looking Clean
Description_FAB TechFlex F6 Braided Wire Loom Provide Abrasion Resistance
Description_INV LS COIL SUB HARNESSES
Description_MKT Are you tired of scouring the junkyard for stock ls coil harnesses? Introducing the new Holley EFI LS Coil Harness. This coil harness is intended to be used with factory LS coils and various Holley EFI main harnesses with Coil-on-plug connectors. The Holley EFI LS coil harnesses are built with the same high quality connectors and wire loom found on all Holley EFI harnesses, guaranteeing a perfect match in your engine bay.
Description_MKT Are you tired of scouring the junkyard for stock ls coil sub harnesses? Introducing the new Holley EFI LS Coil Sub Harness. This coil sub harness is intended to be used with factory LS coils and various Holley EFI main harnesses with Coil-on-plug connectors. The Holley EFI LS coil sub harnesses are built with the same high quality connectors and wire loom found on all Holley EFI harnesses, guaranteeing a perfect match in your engine bay.
Description_SHO IgnCoilWireHrns
height 2.3
length 10.5
weight 0.75
width 10.5
Fitment
Here's What OUR CUSTOMERS Have to Say:

Since 2018, We've Shipped Over 35,000 Automotive Parts to Canadian Customers.

4.6/5

+3,076 Verified Reviews

Easy to find and order. Customer service was responsive and helpful. It fit my vehicle and is protecting the back of it very well

Specific parts for my vehicle were easy to find Shipping was good and website is clear and easy to use

Very happy with the running boards, and the shipping was prompt.

Super easy, discount code worked well for my order

I will buy from here again.

Easy to use site, comprehensive descriptions. Relevant results

Quick shipping, good prices. Great selection of products.

Super easy, discount code worked well for my order

Easy buying process. Fast shipping. Lots of selection!

Great prices looking forward for possible tonneau cover from your site

Quick response and went the extra mile to answer my questions. Very professional and knowledgeable, having nothing but good things to say about the team at TPS

Fast and Quick,easy to understand The product was excellent and packaged extremely well, I would recommend them to all my friends.

The staff was very helpful and the price point is fair. Rafael was very accomodating and responsive to request to cancel order and reorder a different tuner.

Excellent service and price is good too Thanks.

Good service !

Purchasing process was extremely fast and simple, and the product came on time. 5/5 stars.

Need Help? We've Got Answers.

Find quick solutions to the most common questions about shipping, returns, compatibility, and support.

How do I know if a part fits my truck?

Use our vehicle filter by entering your truck’s year, make, and model. If you're unsure, our support team is happy to help.

Do you ship across Canada?

Yes! We ship to all provinces and territories in Canada. Free shipping is available on qualifying orders.

How long will it take to receive my order?

Delivery times vary depending on your location and item availability. Most orders arrive within 2–7 business days.

What is your return policy?

We accept returns within 30 days of delivery, as long as the item is unused and in its original packaging.

How can I contact customer support?

You can reach us via email, phone, or through the contact form on our website. Our team is ready to assist you.

Still have questions?

Our team is here to help — reach out and we'll get back to you as soon as possible.

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare