Drum brake hardware kit for 1968 GTS with 10” rear drums
151, 256, 288, and 331 is an agreed to designation by the brake companies. FMS or FMSI is the friction manufacturers trade organization.
It's usually stamped or printed on the shoe frame somewhere.
Some companies incorporate the number into their product number and some don't.
Same with brake pads. For example the Kelsey Hayes 4 piston calipers use D11 pads regardless of who made it or whether they are for a Dodge Ford or Chevy.
Knowing that lets us ID a pad or shoe without a box, usually
151, 256, 288, and 331 is an agreed to designation by the brake companies. FMS or FMSI is the friction manufacturers trade organization.
It's usually stamped or printed on the shoe frame somewhere.
Some companies incorporate the number into their product number and some don't.
Same with brake pads. For example the Kelsey Hayes 4 piston calipers use D11 pads regardless of who made it or whether they are for a Dodge Ford or Chevy.
Knowing that lets us ID a pad or shoe without a box, usually