RLP HEI universal spark plug wires 8mm set for reliable ignition
RLP HEI 90-degree boots for easy routing and precise fit
RLP HEI silicone jacket resists heat and abrasion for longevity
RLP HEI carbon black core reduces interference for smoother spark
RLP HEI stainless steel terminals resist corrosion and ensure strong contact
RLP HEI fiberglass braided wires offer durability and pull strength
RLP HEI package includes eight silicone spark plug wires for easy install
RLP HEI universal spark plug wires 8mm set for reliable ignition
RLP HEI 90-degree boots for easy routing and precise fit
RLP HEI silicone jacket resists heat and abrasion for longevity
RLP HEI carbon black core reduces interference for smoother spark
RLP HEI stainless steel terminals resist corrosion and ensure strong contact
RLP HEI fiberglass braided wires offer durability and pull strength
RLP HEI package includes eight silicone spark plug wires for easy install

RLP HEI Universal Spark Plug Wire Set 8mm - Black Silicone Jacket, 90° Boots | Replaces MSD 5553

Overview The RLP HEI Universal Spark Plug Wire Set combines rugged construction with practical performance. An 8.0mm...
Vendor: RLP
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RLP HEI universal spark plug wires 8mm set for reliable ignition

RLP HEI Universal Spark Plug Wire Set 8mm - Black Silicone Jacket, 90° Boots | Replaces MSD 5553

£70.93
RLP HEI universal spark plug wires 8mm set for reliable ignition
RLP HEI 90-degree boots for easy routing and precise fit
RLP HEI silicone jacket resists heat and abrasion for longevity
RLP HEI carbon black core reduces interference for smoother spark
RLP HEI stainless steel terminals resist corrosion and ensure strong contact
RLP HEI fiberglass braided wires offer durability and pull strength
RLP HEI package includes eight silicone spark plug wires for easy install

RLP HEI Universal Spark Plug Wire Set 8mm - Black Silicone Jacket, 90° Boots | Replaces MSD 5553

£70.93
Description
Description
x

Overview

The RLP HEI Universal Spark Plug Wire Set combines rugged construction with practical performance. An 8.0mm spiral core delivers steady spark transmission, while a conductive carbon black center helps minimize electrical noise. A stainless steel terminal design resists corrosion, and a high temperature silicone jacket guards against heat, oil, and abrasion. This set is built for reliability in everyday driving and weekend projects alike, with eight wires ready to install straight out of the box.

Key features and benefits

  • Conductor design - 8.0mm spiral wrap core for consistent spark delivery across cylinders.
  • Boot material - Silicone boots provide flexibility and heat tolerance in tight engine bays.
  • Insulation - High temperature jacket resists heat, oil, and abrasion for longer life.
  • Durability - Tightly woven fiberglass braids increase pull strength and help retain connectors.
  • Terminals - Stainless steel spark plug terminals offer corrosion resistance and reliable contact.
  • Electrical noise control - Conductive carbon black core helps suppress interference for cleaner ignition pulses.

Real-world use

Ideal for both classic builds and modern engines, this set supports smooth starts and steady performance under varied conditions. The 90-degree boots help routing around compact engine layouts, while the silicone jacket stays resilient after long drives or hot engine sessions. Expect a confident feel at the wheel with consistent ignition pairs and reduced sparkle interruption during high rpm bursts.

Installation and fit

Designed for quick, hassle-free installation, the wires come ready to install. The 8-wire package ensures you have coverage for multi-coil or HEI configurations, with routing flexibility and a secure fit that holds up to repeated ignition events.

What’s in the box

  • 8 x 8.0mm silicone spark plug wires

Note: Always verify fitment with your vehicle’s ignition system to ensure compatibility and optimal performance.

FAQ

Q: What does the RLP HEI Universal Spark Plug Wire Set replace?

A: Replaces MSD 5553; compatible with most HEI distributor systems, with eight wires included.

Q: What benefits can I expect from the carbon black core and silicone jacket?

A: Carbon core helps reduce interference; silicone jacket offers heat and abrasion resistance for longer life.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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