SEAL-O-RING 6V5391 - Caterpillar

Engine: 3408 (S/N: 99U1-UP) 3408B (S/N: 99U1-UP) 3408C (S/N: 99U1-UP)Introduction
This Special Instruction is intended to provide information on the Engine Overhaul Kit Consist and detailed information on specific parts that should be used based on engine arrangements.This Engine Overhaul Kit may contain extra parts and extra quantities due to the variety of engine arrangements assigned to a given kit. Refer to the corresponding Parts Manual or Disassembly and Assembly manual in Table 1.Note: This Kit may contain upgraded parts. These upgraded part numbers may be different than what you have in the parts manual or engine, but these parts have been technically reviewed for compatibility with your application. Note: This kit contains gasket kits and includes additional parts needed to perform an engine overhaul.Note: This kit does not contain rod bearings, main bearings, and thrust plates.Note: For assistance with technical questions, contact your local Cat dealer. Note: For more information, visit us at catmarinesupport.com.Note: For access to our website you can scan the QR code below with a QR enabled device.
Illustration 1 g03319969
Reference Material
Table 1
Engine Model     Engine Arrangement     Engine Serial Number Range     Parts Book Media     Disassembly and Assembly Media    
3408C     156-6896
177-3057
177-3058
177-3059     S/N:99U1-UP     SEBP3013     SENR1095    
3408B     7W-7583
4W-4000
4W-8050     SEBP1490 SENR7382    
3408C     7W-7583
4W-4000
4W-8050     SEBP3013 SENR1095    3408B and 3408C 450-3948 Major Overhaul Kit Consist
Table 2
450-3948 Major Overhaul Kit Consist    
Gasket Kits    
Part Number     Part Name     Qty    
449-9617