BOLT 8F5535 - Caterpillar

Electric Power Generation3412 GENSET (S/N: 4BZ1-UP)Engine3408 (S/N: DLA1-UP; 67U1-UP; 99U1-UP; 28V1-UP; 78Z1-UP)3408B (S/N: 1LG1-UP; 2BG1-UP; 8RG1-UP; 67U1-UP; 99U1-UP; 28V1-UP; 78Z1-UP)3408C (S/N: 8RG1-UP; TAM1-UP; 9XM1-UP; 67U1-UP; 99U1-UP; 78Z1-UP)3408E (S/N: 7PR1-UP)3412 (S/N: 9XF1-UP; 7HG1-UP; 2WJ1-UP; 3JK1-UP; 5RL1-UP; 7BL1-UP; 60M1-UP; BCS1-UP; 38S1-UP; 81Z1-UP)3412C (S/N: BAK1-UP; 3JK1-UP; 5FL1-UP; 60M1-UP; DJN1-UP; 9EP1-UP; RLR1-UP; 8AR1-UP; 9BR1-UP; TFT1-UP; BCW1-UP; LRY1-UP; RTY1-UP; 1EZ1-UP; 3FZ1-UP; 81Z1-UP)3412E (S/N: TGC1-UP; 4CR1-UP; BFT1-UP)Generator Set3412C GEN SET (S/N: BAX1-UP)Industrial Engine3408C IND (S/N: 9ER1-UP)3408E REMAN (S/N: BFD1-UP; ECP1-UP; BKY1-UP)3412 REMAN (S/N: BLJ1-UP; BKS1-UP)3412C IND (S/N: 38S1-UP)3412C REMAN (S/N: B1A1-UP)3412E IND (S/N: BDT1-UP)3412E REMAN (S/N: BNF1-UP)Marine Engine3408C MARINE (S/N: 1TS1-UP)3412D MARINE (S/N: REA1-UP)3412E MARINE (S/N: 9KS1-UP; 9PW1-UP)C30 MARINE (S/N: CLX1-UP)C32 MARINE (S/N: RXB1-UP; RNC1-UP)Petroleum Engine3412E PETROLEUM (S/N: Z2D1-UP)Power ModulePM3412 (S/N: CAJ1-UP)PumperSCT673 (S/N: 4TZ1-UP)SPS342 (S/N: 2LZ1-UP)SPT342 (S/N: 3CZ1-UP)Engine News, SEBD9963, 10, October 2014, "Improved Cylinder Head Assemblies Are Available through Cat Reman for Certain Commercial Engines". Disregard the previous article. The article that follows has updated part numbers.All new 40.0 mm (1.57 inch) DI adapter heads have been improved to provide easier valve lash adjustments. Refer Table 1 for a list of part numbers of the cylinder head assemblies that include these changes.Note: Do not reuse the old valve bridges, return the existing valve bridges with the head.All new 55.0 mm (2.16 inch) DI adapter heads have been improved to include bolt holes for the use of exhaust shields. Refer Table 2 for a list of part numbers of the cylinder head assemblies that include these changes.
Table 1
Cylinder Head Part Numbers
20R-0520
20R-0523
20R-0524
20R-0528
Table 2
Cylinder Head Part Numbers
0R-4127
0R-4137
0R-4130
0R-4138
0R-8513
0R-8512
0R-4131
0R-4141
0R-4144
0R-4140
0R-8515
0R-8516