CHAMPION RV15YC4 Spark Plug - Nickel, Standard, Tapered Seat, 14mm Thread Dia., 5/8" Hex  selling a pack of 8     old stock   believe the older plugs were better quality....   double check your fitments.  SELLING A BOX OF 8

  Champion RV15YC spark plug is a versatile, tapered-seat, copper-core spark plug commonly used in vintage automotive V8 engines (1970s–1980s), Kohler Magnum engines (KT17, M18, M20), and various lawn and garden equipment. It features an extended projection tip and a 0.035 in 

Primary Fitment Details

Lawn & Garden/Small Engines: Widely used in Kohler engines, specifically KT17, M18, and M20, as well as many riding mower applications.

Automotive: Commonly fits 1970s–1980s GM/Chevrolet V8 engines (e.g., 5.0L, 5.7L, 6.6L in G20 vans) and Cadillac passenger cars.

Technical Specifications

Thread Diameter: 

 (M14x1.25)

Reach: 

 (

)

Hex Size: 

 (

)

Seat Type: Tapered

Gap: Pre-gapped to 0.035 in (

)

Heat Range:15

more than welcome to pick up at shop in butler pa & save shipping.

041926