Champion CCH871 Copper Plus Small Engine Spark Plug RJ8C

The Champion CCH871 (RJ8C) Copper Plus spark plug is engineered for dependable ignition performance in small engines, outdoor power equipment, lawn mowers, and garden equipment. Built on Champion's trusted Copper Plus platform, the RJ8C delivers reliable starts and consistent combustion cycle after cycle.

Key Features:

• Copper-Core Center Electrode — Provides increased electrical conductivity and superior heat control for reduced electrode wear
• Patented Ultraseal Coated Shell — Offers maximum corrosion resistance to extend service life in outdoor and marine-adjacent applications
• Patented SAC-9 Semiconductor Resistor — Suppresses radio frequency interference (RFI) to prevent ignition misfires and electrical noise
• 14mm Thread Diameter — Standard sizing for a wide range of small engine applications
• OEM Cross-Reference: MR45 — Direct replacement for OEM spark plug MR45

The Champion CCH871 / RJ8C is also known by stock number 871 and is sold individually. It is a direct-fit replacement for small engines found in lawn mowers, weed trimmers, and similar outdoor power equipment.