WS8E
• Type: Copper-core spark plug
• Heat Range: 8 (colder side)
• Design: Standard reach with gasket seat
• Features: Reliable ignition in many small gasoline engines
• Applications: Heavy-duty small engine use and industrial engines, pressure washers, generators, mowers
W8EC
• Type: Copper-core spark plug
• Heat Range: 8 (colder)
• Design: Similar to WS8E, engineered for stable spark delivery
• Features: Designed to resist overheating in sustained use
• Applications: Honda small engines, commercial equipment, high-compression engines
WS7F
• Type: Copper-core spark plug
• Heat Range: 7 (medium)
• Design: Shorter reach version (often 3/8")
• Features: Good all-around performance and starting
• Applications: Lawn mowers, small tractors, tillers — general household power equipment
WS7E
• Type: Copper-core spark plug
• Heat Range: 7 (medium)
• Design: Standard reach with gasket seat
• Features: Balanced heat handling — less fouling than hotter plugs
• Applications: Kohler, Honda, Briggs & Stratton mid-range engines
USR7AC
• Type: Copper-core spark plug with resistor
• Heat Range: 8
• Design: Common reach (often 1/2") with built-in resistor to reduce electrical noise
• Features: Helps protect electronics on modern small engines
• Applications: 2-cycle and 4-cycle small engines for utility equipment, snow blowers, chainsaws, blowers
USR5ECS
• Type: Copper-core spark plug with resistor
• Heat Range: 5 (hotter)
• Design: Longer reach with gasket seat and resistor
• Features: Faster heat transfer — reduces fouling in low-load engines; noise suppression
• Applications: Small utility engines, generators, snow throwers, some off-road equipment
