Champion® 404 RN12YC Copper Spark Plug for V-Twins - Replacement for OEM# 5R6A on 1984-2000 Evolution and 1975-1980 Shovelhead (1200cc) Harley Motors - MADE IN USA - Billet Proof Designs
W&W Cycles - Spark plug by Autolite
HARLEY-DAVIDSON High-Performance Spark Plug 5R6A (2 Pieces) for Shovelhead and Evolution 1340 Part Number: 32342-04 : Amazon.de: Automotive