Filter Filters F-250 / 350 / 450 / 550 Remove All Filters Price $100-$500 (14) $500 and above (1) Condition New (15) Brand Harmony Audio (15) Make Ford (15) 01-14 Ford F250 F350 Ext Super Cab Truck Harmony R104 Dual 10" Sub Box &... $371.99 Compatible with 2001-2014 Ford F250 F350 Super Crew Truck Harmony F124 Dual... $465.99 Compatible with 2001-2015 Ford F250 F350 Extended / Super Cab Truck Harmony... $410.99 Compatible with 01-14 Ford F250 F350 Ext Super Cab Truck Harmony F104 Dual... $499.99 Compatible with 2001-2014 Ford F250 F350 Super Crew Truck Harmony F124 Dual... $544.99 Compatible with 2001-2015 Ford F250 F350 Extended / Super Cab Truck Harmony... $325.99 Compatible with 2001-2015 Ford F250 F350 Extended / Super Cab Truck Harmony... $415.99 01-14 Ford F250 F350 Ext Super Cab Truck Harmony R104 Dual 10" Sub Box Enclosure $230.99 01-14 Ford F250 F350 Ext Super Cab Truck Harmony R104 Dual 10" Sub Box Enclosure $230.99 01-14 Ford F250 F350 Ext Super Cab Truck Harmony F104 Dual 10" Sub Box Enclosure $254.99 Compatible with 2001-2014 Ford F250 F350 Super Crew Truck Harmony F104 Dual... $409.99 Compatible with 2001-2014 Ford F250 F350 Super Crew Truck Harmony F104 Dual... $484.99 2001-2014 Ford F250 F350 Super Crew Truck Harmony F124 Dual 12 Sub Box Enclosure $289.99 Compatible with 01-14 Ford F250 F350 Ext Super Cab Truck Harmony A102 Dual... $494.99 01-14 Ford F250 F350 Ext Super Cab Truck Harmony A102 Dual 10" Sub Box Enclosure $264.99