Large sized, ribbed black rubber horn bulb 115mm diameter with brass ferrule and 15mm horn tube hole. This rubber horn bulb can have the end opened out if too small using a rough round file. It has a removable plug in small end under the ferrule to aid adjustment and fitting. To fit - remove brass end ferrule and push onto the horn tube, remove the end plug and push this on to the tube (easing with washing up liquid helps) then push the round bulb on to this (it locates into a moulded ring). Finally, pull the brass ferrule back into place over both parts of rubber bulb and the part should fit snugly.

Black rubber horn bulb approximately 93mm in diameter with a 16mm diameter hole through the brass ferrule. This horn bulb has a longer neck than part number 617. This rubber horn bulb can have the end opened out if too small using a rough round file. It has a removable plug in the end under the ferrule to aid adjustment and fitting. To fit - remove the brass end ferrule and push on to the horn tube, remove the end plug and push this on to the horn tube (easing with washing up liquid helps), then push the round bulb on to this (locating onto a moulded ring). Finally pull the brass ferrule back into place over both parts of rubber bulb and the part should fit snugly.

Medium sized black rubber horn bulb, 90mm diameter. Supplied with a brass ferrule and a 15mm hole which can be enlarged easily if too small using a rough round file. It has a removable rubber plug in the end under the ferrule to aid adjustment and fitting. To fit - remove brass end ferrule and push onto the horn tube, remove the end plug and push this on to the tube (easing with washing up liquid helps), then push the round bulb on to the plug, which locates into a moulded ring. Finally, pull the brass ferrule back into place over both parts of the rubber bulb and the part should fit snugly.

Small size, black rubber horn bulb, 70mm diameter, brass ferrule, 16mm hole. Particularly suitable for motorcyle horns.