823031 5 Mercury SCREW

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: The 455-1195 Top End Overhaul Kit only applies to certain engine serial numbers. Verify that your engine serial number is listed in the tables found in the ""Pricing Arrangement Tables"" section below.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: For more information, visit us at: catmarinesupport.com.Note: For assistance with technical questions, contact your local Cat dealer. Reference Material
Table 1
Engine Model     Engine Arrangements     Engine Serial Number Prefix     Parts Book Media     Disassembly and Assembly Media    
C18
    261-7716
261-7708
261-7706
261-7710     S/N:CYG     SEBP4317     RENR2389    
319-8757 S/N:WKB
    SEBP4018     RENR2389    
241-9635
241-9631
241-9636
241-9639
241-9621
241-9620
241-9632 S/N:C1J     SEBP4018     RENR2389    
328-2401 S/N:GPN     SEBP4317     RENR2389    Note: For ordering reference material, contact your local Cat dealer.C18 455-1188 Major Overhaul Kit Consist
Table 2
455-1188 Major Overhaul Kit Consist    
Gasket Kits    
Part Number     Part Name     Qty    
417-9667     Rear Structure     1    
453-2313     Heat Exchanger Gasket Kit     1    
455-1190     Oil Cooler and Lines Gasket Kit     1    
455-1197     Central and Lower Structure     1    
455-1617     After Cooler and Lines Gasket Kit     1    
455-1738     Single Cylinder Head Gasket Kit     1    
Additional Parts Included in This Kit    
Part Number     Part Name     Qty    
1R-0749     Fuel Filter     1    
1R-1808     Engine Oil Filter     2    
2M-1395     Gasket     1    
2N-0931     Gasket     1    
2N-2766     Locknut     12    
2S-4078     O-Ring Seal     2    
3K-0360     O-Ring Seal     4    
4N-1156     Regulator Cover Gasket     1    
4N-8150     Spring     2    
6L-2280     Zinc Rod     3    
6V-4589     O-Ring Seal     1    
6V-5048     O-Ring Seal     4    
6V-6609     O-Ring Seal     1    
6V-6923     Backup Ring     1    
6V-8397     O-Ring Seal     2    
8S-9191     Bolt     6    
8T-9527     O-Ring Seal     1    
033-6033     O-Ring Seal     1    
061-9455     O-Ring Seal     1    
101-8468     Bushing     1    
106-1792     Taperlock Stud     12    
107-5769     O-Ring Seal     2    
109-0072     O-Ring Seal     1    
109-0077     O-Ring Seal     1    
122-3772     O-Ring Seal     1    
126-1757     Washer     9    
129-5427     Special Washer     2    
130-4698     Bushing     1    
131-7123     Bushing     1    
142-5867     Crankshaft Seal     1    
144-6142     Integral Seal     1    
155-9524     Integral Seal     1    
166-9144     Gasket     1    
205-4832     O-Ring Seal     2