United Marine 203 Delco EST V8 Spark Plug Wire Set – Crusader GM Big Block

Complete 8-wire set for Crusader GM big block V8 marine engines with Delco EST (Electronic Spark Timing) distributors. 180° boots on spark plug ends; 90° boots on distributor cap ends for secure fit and clean routing.

• 8 mm SSC 100% silicone jacket – 500 °F heat rating, high tear strength
• Ultra-low 270-ohm/ft carbon-latex core for maximum spark energy
• Superior EMI/RFI suppression prevents tach bounce, radio static, and ECU interference
• Heavy-duty molded boots maintain dielectric strength in wet/salt environments
• Stainless steel + brass snap-lock terminals resist corrosion and arcing

Fits:

• Crusader GM big block V8 engines (454/502 cu. in., 1989–1998) with Delco EST distributors

Replaces:

• Crusader 98171
• Volvo Penta 3857169

Manufacturer Part No.: 203 Brand: United Marine Availability: In Stock – Ships Free (when order qualifies) Hazmat: No