Champion Spark Plug QL77JC4 #828-1 Replaces QL77JC RL77J BR9HS BR9HS-10, SELECT: New or Older Pack The spark plug is designed to withstand high temperatures and fits most small-engine brands and models. For use with small marine engines Champion copper plus small engine plugs resist fouling and provide superior corrosion resistance Feature a copper core electrode that provides increased conductivity and heat control while delivering good overall wear characteristics Engineered to exceed OE designs and maximum durability Designed for easy starting Plug Type: QL77JC4 Seat Type: Gasket Hex Size: 13/16 Inch (20 mm) Thread Size: 14 mm Plug Reach: 0.5 in (12.7 mm) Card Blister Pack NEW STOCK Model: QL77JC4 MPN: 828-1 UPC: 037551011537 Shop Pack OLD STOCK Model: QL77JC4 MPN: 828-1 828 UPC: 037551210503 Shop Pack plugs are from a Bulk Shop Pack and are shipped wrapped in individual bubble wrap units. Purchase is for one one spark plug USA domestic shipments are shipped USPS Ground Advantage Mail with Tracking When buying different variations from the same or similar listings, the lowest shipping cost is obtained by buying the total number of units wanted from 'One Variation' and then leaving a message within your order defining what items you want to receive and the number of each item you want to receive. The number of items requested cannot exceed the number shown as being in stock. This stops from restarting the total weight summation for each variation. The message link is on the same page where you select method of payment.USPS postage cost is based on total weight and zip code. The cost breakdown is shown before payment is required and the discount for multiple purchases is shown as a separte credit in the list.