PULLEY 2S4696 - Caterpillar

Location of new 132-2072 O-Ring Seal (1) and 8L-2779 O-Ring Seal (2) in a typical fuel injection lines group. Cylinder Head (A). Through-Head-Adapter (B). Internal Fuel Line (C).Adaptable To: The new 132-2072 O-Ring Seal (1) is a direct replacement for the former 8M-4437 O-Ring Seal on the "through-head-adapters" (B) and the new 8L-2779 O-Ring Seal is a direct replacement for the former 1H-1023 O-Ring Seal on the "internal fuel lines" (C) in the fuel injection lines groups on these engines. The new O-ring seals are in effect as listed in the subtitle and can be used to replace the former O-ring seals on all earlier 3406 and 3406C engines in Caterpillar machines.