2006/04/17 Caterpillar

Engine:

C12 (S/N: C1Z1-UP)

Generator Set Engine:

C18 MGS (S/N: MGS1-UP)

Industrial Engine:

C15 (S/N: BEM1-UP)

Marine Engines:

3176B (S/N: 9WK1-UP)

3176C (S/N: 6BW1-UP)

3196 (S/N: 2XR1-UP)

3406C (S/N: 4TB1-UP)

3406E (S/N: 9WR1-UP)

C-12 (S/N: 9HP1-UP)

C15 (S/N: RLA1-UP)

C18 (S/N: CKH1-UP; C1J1-UP; CYN1-UP)

The current water pump109-5324 Impeller is being replaced by 282-0683 Impeller. The new impeller has increased engagement of the spline for improved reliability.