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NGK (2522) BUHX Standard Spark Plug, Pack of 1NGK Spark Plugs are designed to operate over a much wider heat range than ordinary plugs. They resist carbon buildup and pre-ignition. Each features high alumina ceramics for better heat transfer and electrical insulation. A patented triple gasket sealing process eliminates the possibility of combus...$2.56$3.74
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QuickSilver 816761Q16 Complete Set of Spark Plug Wires with Boots at Spark Plug EndSpark plug set 816761Q16 is for use on V-6 MerCruiser engines with Thunderbolt IV ignition systems (1985 through 2003). The Quicksilver brand is the leader in delivering uncompromising engine oils, parts and accessories to the marine industry for over 65 years. Quicksilver is the premier supplier of...$49.99$54.21
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Denso (5319) IW31 Iridium Power Spark Plug, (Pack of 1)Increased performance with World's smallest Iridium Center Electrode (0.4mm). To increase ignitability, the important point is to let the flame kernel produced by the spark to grow unobstructed. Normally, this can be accomplished by widening the spark gap. However, this causes spark voltage to incre...$11.60$13.38
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NGK (5810) B9HS Standard Spark Plug, Pack of 1NGK Standard Spark Plug is manufactured to enhance the performance of the vehicle. It is constructed from durable material that is corrosion and abrasion resistant. The spark plug insulators are made of 99 percent pure alumina silicate, allowing for longer insulator noses for reduced fouling. This s...$.75$3.13
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NGK (6014) BR9ECSIX-5 Iridium IX Spark Plug, Pack of 1Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling. The 0.6mm laser welded fine iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical qu...$11.78$11.78
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Denso (4222) U16FER9 Spark Plug, (Pack of 1)10 millimeter half-thread size, 19 millimeter (3/4 inch) reach, 11/16 inch (18 millimeter) Hex size, gasket seat, resistor, stud terminal nut, .035 inch (0.9 millimeter) gap, heat range: 16.$5.72$12.92
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Invincible Marine Brass Snap Drain Plug (1-Inch)Rugged, tough and reliable, invincible marine offers top of the line boating products and marine accessories at affordable prices, and is well-known for their hardworking nautical line. For freshwater and saltwater boating, invincible marine designs products for avid fishermen and weekend boaters. Q...$3.51$4.29
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Denso 3401 Spark PlugIridium plugs have an extremely long life as Iridium is 6x harder and 8x stronger than platinum. Because of the strength and hardness of iridium, there is virtually no electrode wear. This combined with a platinum ground electrode, creates a spark plug that is almost impervious to wear even under ex...$10.05$11.35