GKTech S13 / R32 Solid Front Diff Bushings, part number S13X-DIFF. For installing an S14/S15/R33/R34 diff in an S13/R32 subframe. Used when installing an S14/S15/R33/R34 diff in an S13/R32 subframe S14/S15/R33/R34 diffs have bushings on both the front and rear of the diff, S13/R32 diffs do not. Use the original rear diff cover and install these bushings to position the front of the diff correctly Solid design keeps diff movement within the subframe to a minimum CNC machined from 6061-T6 aluminium 4 piece set (front bushings only) Installs by hand, no press needed Longer front mount bolts are required when installing an S14/S15/R33/R34 diff in an S13/R32 subframe (20mm longer = 80mm thread length). Nissan OEM part number is 55424-33P00 Expect a small increase in noise and vibration from the more rigid mounting. Standard S13/R32 diffs are already solid mounted Fitment Nissan S13 240SX Nissan S13 Silvia / 180SX Nissan Skyline R32 GTS-T (2WD) Nissan Z32 300ZX TT (R230) Contact us if you are unsure of fitment or Size HERE