2004/05/01 Caterpillar

Engine:

3304 (S/N: 3TC1-UP)

3304B (S/N: 1PS1-UP)

3306 (S/N: 85Z1-UP)

3306B (S/N: 8JJ1-UP; 1RS1-UP; 8NS1-UP; 1CZ1-UP; 1BM1-UP; 5GZ1-UP)

3304 DI T (S/N: 4XB1-UP; 10E1-UP)

3304 DI (S/N: 83Z1-UP)

3306 DI (S/N: 64Z1-UP)

3306B DI (S/N: 7JB1-UP)

3306B ATAAC (S/N: 9NR1-UP)

Description of Change: A new piston has been introduced for 3304 and 3306 engines with a 15:1 compression ratio. The new piston will help oil consumption in marine auxiliary engines and industrial engines.

Adaptable To: The new piston is adaptable to the engines with a 15:1 compression ratio that use one of the following pistons: 8N-3102 Piston Body Assembly, 129-0338 Piston Body Assembly, 165-4262 Piston Body Assembly, 6I-3650 Piston Body Assembly and 129-0360 Piston Body Assembly .

The following chart lists the part numbers for the new piston body and the piston rings.