12-1/4" x 3-3/8" 8000# Forward Self Adjusting Electric Brake Assembly 4 Bolt Mounting Backing Plates Direct Replacement Dexter 023-434-00, and 023-435-00 Typically, Dexter Drum will 8-285 cast into the front of the drum Mount Bolt Spacing on both is 3 and 5/16th inches by 3 and 5/8th inches Description Part Number: BK-8KE-SET Perfect for replacing your Dexter Axle 23-434 and 23-435 electric brakes Includes (1) Left-hand and (1) Right Hand 12-1/4" x 3-3/8" electric brake assembly Cast backing plate with 4 hole mount Rated at 8,000 lbs. per axle Self adjusting electric brake assembly keeps your brakes adjusted automatically All brake parts are pre-assembled on the backing plate for quick replacement Replaces Dexter Part Number: K23-434-00 and K23-435-00 Often used with Drums marked 8-218 and 8-285 (but check to make sure you have 4 bolt mount!) Replace for BK-8KE-SET, K2343400 +K2343500, K23-434-00 +K23-435-00, 02343400+ 02343500, 23434 + 23435, 023-434-00+ 023-435-00, 23-434 + 23-435 Including (1) Left-hand and (1) Right Hand 12-1/4" x 3-3/8" (12.25" X 3.375")electric brake assembly Cast backing plate with 5 hole mount Rated at 8,000 lbs. per axle Forward Self-Adjusting