Fits Caterpillar D3G D4G D5G D5GXL Exhaust Extension Pipe 2850152One New Aftermarket Replacement Exhaust Extension Pipe Fits Caterpillar (Fits CAT) D Series Track Type Dozers This exhaust extension pipe (also cataloged as Pipe AS Exhaust) routes exhaust gases away from the engine and operator on Fits Caterpillar (Fits CAT) D3G, D4G, D5G, and D5GXL track type tractors equipped with the 3046 engine. It is a direct aftermarket replacement for OEM part number 285 0152 2850152. Specifications Length: 41 in (137. 16 cm)