Champion D-16 High Compression Spark Plugs for Harley-Davidson

Champion D-16 (OEM 32302-09 or No. 3 spark plug) Also replaces the original OEM 32304-09 or No. 2 spark plug as the D-16 covers a wider heat range.
Spark plugs, compatible with all high compression 45CI 1927-1952, 61CI 1927-1947, 74CI 1927-1948, 80CI 1927-1947 and Servi-Car 1953-1954