Find the right Champion Plug Number QL78YC Spark Plug for your vehicle at O'Reilly Auto Parts. Place your order online and pick it up at your local store for free.

39 replacement spark plugs found for Champion QL78YC. Search this spark plug cross reference with more than 90000 models.

This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. Built to ISO and SAE standards, it offers dependable performance and durability. The OE type replacement plug resists fouling and boasts superior corrosion resistance.

Shop CHAMPION SPARK PLUGS Copper Plus Small Engine Spark Plug 938M, Type QL78YC at West Marine. Visit for prices, reviews, deals and more!

The Champion QL78YC Spark Plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. It has been built to conform with ISO and SAE standards and provides dependable performance as well as durability. This OE type replacement plug resists fouling and offers exceptional corrosion resistance.

Plugs feature a triple-coated shell for excellent corrosion resistance, and a triple seal assembly that is the strongest in the industry. Precision rolled threads conform to all manufacturers’ specifications while a copper core optimizes performance and plug life. SKU# QL78YC. Fits:

Champion Marine Spark Plug QL78YC is specifically designed to resist potential salt and spray damage and corrosion. Many models use special resistors to prevent radio interference and damage to the CDI ignition systems often used in outboard motors.Champion Spark Plugs are perfect for your marine application, whether inboard engine, outboard ...