MSD 5543 Street-Fire Spark Plug Wire Set Small Block Ford 289-302 Socket Style 8mm Black

The MSD 5543 Street-Fire Spark Plug Wire Set is a pre-assembled, application-specific ignition wire set engineered for Small Block Ford (SBF) engines equipped with a socket-style distributor cap. Designed to deliver reliable, high-energy spark to Ford 221, 260, 289, and 302 cubic inch V8 engines, these 8mm wires offer a performance upgrade while maintaining a clean, factory-style appearance.

Key Features:

• 8mm Silicone and Synthetic Jacket — Resists engine heat, abrasion, and tearing for long-lasting durability
• Helically Wound Spiral Core Conductor — Suppresses electromagnetic interference (EMI) and radio frequency interference (RFI) to protect onboard electronics
• Kevlar Core Construction — Provides exceptional tensile strength and durability
• 500 Ohms Per Foot Resistance — Low-resistance design maximizes spark energy delivery to the plug for improved combustion efficiency
• Heavy-Duty Terminals — Ensure a secure, corrosion-resistant connection at both the distributor cap and spark plug
• Silicone Boots — Protect terminals from high exhaust temperatures and heat soak
• Socket Style Cap Fitment — Pre-cut and terminated to fit SBF socket-style distributor caps
• Straight Spark Plug Boots — Factory-style multi-angle boot design for easy installation

Emissions Compliance: This part is legal for sale or use on emissions-controlled vehicles, uncontrolled (non-emissions controlled) vehicles, and racing use only vehicles, as it does not affect vehicle emissions and is not covered by emissions regulations.

The MSD Street-Fire line delivers performance-grade ignition components at an accessible price point, making the 5543 an ideal choice for restoration builds, daily drivers, and street/strip applications running a Small Block Ford with a socket-style cap.