DIAMETER 1-1/4" CONNECTION CLAMSHELL 72.91 300561-66 This 1-1/4" diameter breather hose end is for the clamshell (Wiggins) style breather.

DIAMETER 1-1/4" CONNECTION QUICK DISCONNECT 39.47 300561-50 This 1-1/4" diameter breather hose end is for the quick disconnect style breather.

DIAMETER 1-3/4" CONNECTION QUICK DISCONNECT 42.84 300561-55 This 1-3/4" diameter breather hose end is for the quick disconnect style breather.