Synergy 4018-RHD - JK Onboard Air Compressor Bracket RHD (Viair & ARB) - Manual (Page 4)

7) With both feet flipped on the 450 compressor, mount it to the bracket as shown above.
8) Slide the compressor forward on the mounting slots as far as possible, mark where the additional holes
are needed.
9) Center punch and drill the rear holes using a 3/16” drill bit.
10) The compressor is now mounted, proceed with compressor bracket mounting.
Installation is Complete