SEAL-O-RING 4K2039 - Caterpillar

Engine:
3508 (S/N: 96Y1-UP)
3508B (S/N: S2E1-UP)
3508C (S/N: TTA1-UP; PXB1-UP; TTB1-UP)
3512 (S/N: 50Y1-UP)
3512B (S/N: S2H1-UP; S2J1-UP; S2L1-UP; 8EM1-UP)
3516 (S/N: 29Z1-UP)
3516B (S/N: S2S1-UP; S2Z1-UP)
Description of Change: The new engine oil cooler groups have a high copper/ nickel content to eliminate engine oil coking.Adaptable To: The new engine oil cooler groups replace the former cooler groups and are adaptable back to first production on the serial numbers listed above. Refer to Table 2 for a list of the new and former oil cooler groups.
Table 1
New Part Number     Former Part Number    
312-3150     4W-5892    
312-3149     4W-5891    
450-7765     378-7398    
333-8960     378-7400    This change is effective on the serial numbers listed in Table 2.
Table 2
Effective Serial Numbers    
S/N:96Y02175-UP    
S/N:S2E00855-UP    
S/N:PXB00002-UP    
S/N:TTA00278-UP    
S/N:TTB00604-UP    
S/N:50Y01913-UP    
S/N:8EM00562-UP    
S/N:S2H00710-UP    
S/N:S2J00799-UP    
S/N:S2L00993-UP    
S/N:29Z01699-UP    
S/N:S2S00495-UP    
S/N:S2Z00441-UP