Harley Davidson WLDR, WLD, WL Heads have a steel insert, cast in to accept the 18mm spark plug.Combustion chamber is .472″ deep.
-22%
Harley Davidson 1940-57′ WLDR, WLD, WL 5:1 Low Compression Aluminum Head Set
$62.08 Save:$17.00(22%)
Description
