Wilwood's 150-40-7812K is a set of four BP-40 pads on the 7812 plate, which the manufacturer lists for High-Temperature Racing Pads. The brand's pad data gives a pad area of 6.36 and pad volume of 2.1 for this plate, and the set is 0.49 inch thick. The manufacturer describes the BP-40 formulation as a high-friction pad, so this set targets track days, heavy braking, and sustained hard stops rather than everyday street use. A buyer should weigh the price against a stock pad only if the car sees that kind of use, because the manufacturer frames the 7812 shape as a racing caliper part.
Fitment is the main thing to confirm before ordering. The 7812 shape is standard 7812 shape, high-friction brake pads, and the manufacturer's pad page lists compatible Wilwood calipers for this plate, so check your caliper against that list. Searches for "Wilwood BP-40 7812 pads," "Dynapro bridge bolt racing pads," and "high-temperature .49 thick brake pad set" match this part. Installation is a pad-swap job at the caliper, but the bridge-bolt retention and pad-height setting need care, covered below.
The manufacturer lists compatible calipers for pad plate 7812 on its brake pad page, and describes the shape as the standard 7812 design. Confirm your caliper model against that list before ordering.
Per the manufacturer's assembly instructions for Wilwood calipers, the center bridge pad retainer bolt, nut, and tube are removed, the pads are inserted, and the tube, bolt, and locknut are reinstalled to secure the pads, snug with no play in the bolt or tube.
Per the manufacturer's assembly sheets for Wilwood calipers, the center bridge retainer comes out first, then the pads go in with their tops flush to the outside diameter of the rotor. Pad height is set by adding or removing shims between the caliper and bracket, so check that the rotor is centered in the caliper before you fix the pads. The manufacturer also sells caliper bridge bolt kits with spacers for specific calipers, so confirm you have the matching hardware before disassembly. Verify the caliper's torque specification with the manufacturer rather than relying on general figures.
