4 Glow Plugs for 3879899 387-9899 Caterpillar 236D 242D 246D 308 308.5 257D 906K. Fits Cat, Caterpillar Skid Steer Loader Models: 236D3, 236D, 242D, 242D3, 246D, 246D3, 257D, 257D3, 259D, 259D3, 262D, 262D3, 277D, 279D, 279D3, 287D, 289D, 289D3.