Description & Size Guide
128 inch; .040" MLS (Multi Layer Steel) head gaskets. Made with embossing for water cooled heads only. Can be used up to 4.320" bore without mods or plugging the water cooled heads. Oil cooled heads must always be plugged on cylinder bores exceeding 4.250" since the oil cooling port is closer to the cylinder bore.
18-21 Softail; 17-21 Touring, Trikes. With water cooled heads, oil cooled heads must have oil drain plugs welded or plugged
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