Makita part 142041-1 — RACK 42 COMPLETE — original Makita feed rack for the caulking / heat-gun drive assembly. It’s the precision rack that meshes with the tool’s spur gear to advance the piston / push rod, sold as the complete rack assembly for an accurate, like‑for‑like replacement.
Fits a range of Makita caulking and heat‑gun models includingBCG140 , BCG180 , DCG180 , DCG140 and CG100D — check your model number against 142041-1 to confirm fit.
Why choose this part: it’s supplied as the complete rack (142041-1) so you get the full feed element that installs into the housing without having to source multiple small pieces; replacing a worn or damaged rack restores smooth, consistent feed and stops skipping or slipping in the drive mechanism.
Jump straight to the Makita spare parts diagrams:
