This is a genuine DeWalt Cordless Hammer Drill replacement Drill gear case assembly. This Gearcase, 399102-01SV replaces the 399102-01 gearcase assembly. This gearcase is constructed of strong cast aluminum and will include the casing, bearings, spindle shaft, torque selector collar and the cam return spring, part number 399059-00.
The gearcase is the aluminum piece which sits behind the chuck, the most common reason for replacing a gearcase is physical damage to the drill either by dropping it or the screw mounts breaking.
This original replacement gearcase will fit the following DeWalt models:
DC984KA Type 1 14.4V HAMMERDRILL
DC984KA-AR Type 1 14.4V HMRDR/DRILL
DC984KA-B2 Type 1 14.4V HMRDR/DRILL
DC984KA-BR Type 1 14.4V HAMMERDRILL
DC984VA Type 1 DRILL/DRIVER
DC986KA Type 1 18V XRP MID-HANDLE HAMMER
DC988KA Type 1 18V HAMMER DRILL
DC988KA-AR Type 1 18V HAMMER DRILL
DC988KA-B2 Type 1 18V HAMMER DRILL
DC988KA-BR Type 1 18V HAMMER DRILL
DC988VA Type 1 HAMMER DRILL
DCD951KL Type 1 18V HAMMER DRILL
DW984K-2 Type 1 14.4V HAMMERDRILL/DRILL/D
DW984KV-2 Type 1 14.4V HAMMERDRILL KIT
DW988K-2 Type 1 18V HAMMERDRILL/DRILL/DRI
DW988K-2H Type 1 18V HAMMER DRILL
DW988KV-2 Type 1 18 VOLT HAMMERDRILL KIT W