Application & Compatibility

The D1203 air disc brake pad set is engineered for heavy-duty truck and commercial vehicle service. With a 9.7 in x 4.25 in pad outline, this kit services a single axle and includes four pads and two hardware kits for a complete, bay-ready solution. It matches the FMSI D1203 footprint and is compatible with Bendix and Knorr SB7/SN7 air disc brake calipers. For procurement flexibility, the D1203 is cross-referenced by multiple OEM and aftermarket suppliers, commonly aligning with interchange numbers such as 802593 and K109249, supporting easy sourcing and mixed-fleet maintenance.

Design & Serviceability

Built for consistent braking under demanding operating conditions, these pads feature an advanced mechanical retention system that helps resist pad shear and lift-off during high thermal loads. A tension-relief groove manages surface stresses and assists with dust and gas evacuation to maintain stable contact and promote even wear. Offered in both Standard Duty and Severe Duty friction formulations, fleets can align pad performance with route and duty-cycle demands; Severe Duty is recommended for high-demand applications and higher axle ratings in the 20,000–23,000 lb range. Each kit includes complete hardware to streamline a straightforward single-axle install, reducing parts picking and downtime while ensuring repeatable service across brands and locations.