Quicksilver 816761Q4 Spark Plug Wire Kit for MerCruiser V8 Engines

The Quicksilver 816761Q4 spark plug wire kit is an OEM replacement set designed specifically for V8 MerCruiser left-hand (LH) engines with 305 and 350 cubic inch displacement equipped with Thunderbolt IV ignition systems from 1981 to 1992. This genuine Mercury Marine replacement ensures reliable ignition performance and proper fitment for your marine engine.

Key Features:

• Complete set of spark plug wires with pre-installed boots at spark plug end
• Custom-tailored wire lengths to reach each plug location without excess slack or strain
• Marine-grade construction engineered for efficiency, endurance, and durability in harsh marine environments
• OEM quality backed by over 65 years of Mercury Marine engineering excellence
• Designed to withstand moisture, heat, and vibration typical of marine engine compartments

Quicksilver is the trusted choice for Mercury Marine original equipment parts, delivering the performance and reliability that aftermarket alternatives cannot match. This spark plug wire kit provides optimal conductivity and insulation for consistent engine performance and longevity.