Reliable ignition performance on a built 351W depends on wire sets that can handle heat, resist interference, and deliver a consistent spark every time. Moroso's Mag Tune spark plug wire set pairs 8mm construction with 135-degree plug boots and a non-HEI, unsleeved configuration routed over the valve covers, giving classic Ford small-block builders a direct-fit ignition wire solution in clean black.
Low-resistance, high-efficiency conductor. Each wire runs 350 ohms of resistance per foot through a stainless nickel alloy conductor wound 32 times per inch around a conductive, latex-coated heavy fiberglass core. The tight winding suppresses electromagnetic interference without choking the ignition signal, keeping cylinder-to-cylinder timing consistent under load.
Dual-layer EPDM jacket built for engine bay heat. Two layers of high-heat resistant EPDM surround the inner insulation, separated by a nylon reinforcing pull tape that adds pull strength during installation and removal. The inner insulation layer maximizes dielectric strength to prevent crossfire, while the outer jacket resists heat and flame from headers and exhaust components common on 351W builds.
Silicone boots with snap-lock terminals. The 135-degree silicone plug boots flex into tight header clearances and shield the connection point from extreme heat. Inside each boot, sure-grip snap-lock terminals seat positively onto the plug, eliminating the loose connections that cause misfires and intermittent spark loss.
Product Benefits
- 8mm Wire Diameter: Provides the conductor mass and insulation thickness needed for high-output ignition systems.
- 350 Ohms/Foot Resistance: Suppresses RFI and EMI while maintaining a strong ignition signal.
- 32x Wound Stainless Nickel Alloy Conductor: Dense winding over a latex-coated fiberglass core maximizes conductivity and interference suppression.
- Dual-Layer EPDM Jacket: Two EPDM layers separated by nylon pull tape deliver heat resistance and mechanical durability.
- 135-Degree Plug Boots: Silicone construction clears tight header and valve cover clearances common on 351W installations.
- Snap-Lock Terminals: Sure-grip design seats firmly on plug electrodes to prevent misfire-causing connection failures.
- Non-HEI, Over Valve Cover Routing: Configured specifically for 351W applications without HEI distributors.
- Black Finish: Clean appearance suited to engine bay show builds and street-driven classics alike.
Note: Fits Ford 351W engines. Non-HEI configuration; not compatible with HEI distributor setups. Wires route over the valve covers. Unsleeved design.
About Moroso: Moroso Performance Products has supplied racing and high-performance ignition, oiling, and electrical components to professional and amateur builders for decades. The brand's wire sets, oil pans, and vacuum pumps appear in drag racing, road racing, and circle track applications worldwide, with a catalog covering domestic V8 platforms from classic small-blocks to modern forced-induction engines.
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Product Specifications & Vehicle Fitment
Review the product details and confirm compatibility with your vehicle before ordering.
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