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121-2014 COVER GP-FLYWHEEL HOUSING S/N REA203-UP ALSO AN ATTACHMENT 3412D MARINE ENGINE


BASIC ENGINE
HOUSING GP-FLYWHEEL
HOUSING GP-FRONT
VALVE MECHANISM GP
CRANKSHAFT GP
CYLINDER BLOCK GP

MARINE ENGINE 3412D MARINE ENGINE REA
 3412D Marine Engine REA00001-UP SEBP3998 3412D REA   (2003)

BASIC ENGINE

HOUSING GP-FLYWHEEL
COVER GP-FLYWHEEL HOUSING
121-2014 COVER GP-FLYWHEEL HOUSING
COVER GP-FLYWHEEL HOUSING
4N-7798 COVER GP-FLYWHEEL HOUSING
HOUSING GP-FLYWHEEL
120-8668 HOUSING GP-FLYWHEEL
 

#SEBP39980010
 

121-2014: COVER GP-FLYWHEEL HOUSING

121-2014 COVER GP-FLYWHEEL HOUSING
S/N REA203-UP
ALSO AN ATTACHMENT
i00480419 SEBP3998
1212014 COVER GP-FLYWHEEL HOUSING Parts scheme
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Parts for your 3412D MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 125-9794 [2] SEAL-O-RING  
2. 4P-8425 [1] COVER-ACCESSORY DRIVE  
3. 1A-2029 [8] BOLT (3/8-16X1.125-IN)  
4. 5M-2894 [16] WASHER-HARD (10.2X18.5X2.5-MM THK)  
5. 6F-7012 [4] STUD-TAPERLOCK (3/8-16X1.57-IN)  
6. 4N-0933 [2] GASKET  
7. 0S-1619 [2] BOLT (3/8-16X3-IN)  
8. 4N-1114 [1] COVER  
9. 4D-3704 [3] WASHER-HARD (17X30X5-MM THK)  
10. 0S-1594 [2] BOLT (3/8-16X1-IN)  
11. 9Y-6089 [1] GASKET  
12. 4P-7820 [1] COVER-ACCESSORY DRIVE  
13. 9L-6924 [1] GASKET  
14. 2W-5730 [1] COVER  
15. 9S-8752 [4] NUT-FULL (3/8-16-THD)  
16. 2P-2772 [2] COVER  
17. 0S-1589 [3] BOLT (5/8-11X1.75-IN)  
 

#SEBP39980011
 

4N-7798: COVER GP-FLYWHEEL HOUSING

4N-7798 COVER GP-FLYWHEEL HOUSING
S/N REA1-2389
REAR STRUCTURE
ALSO AN ATTACHMENT
i00370964 SEBP3998
4N7798 COVER GP-FLYWHEEL HOUSING Parts scheme
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Parts for your 3412D MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 0S-1594 [3] BOLT (3/8-16X1-IN)  
2. 5M-2894 [14] WASHER-HARD (10.2X18.5X2.5-MM THK)  
3. 2P-2772 [2] COVER  
  4N-0933 [2] GASKET  
4. 0S-1619 [1] BOLT (3/8-16X3-IN)  
5. 1A-0291 [1] COVER-SHAFT  
  2M-5446 [1] GASKET  
6. 1A-2029 [8] BOLT (3/8-16X1.125-IN)  
7. 4P-8425 C [1] COVER-ACCESSORY DRIVE  
8. 6F-7012 [2] STUD-TAPERLOCK (3/8-16X1.57-IN)  
  9S-8752 C [2] NUT-FULL (3/8-16-THD)  
9. 0S-1566 [3] BOLT (5/8-11X1.5-IN)  
  5P-8247 [3] WASHER-HARD (17X32X3.5-MM THK)  
10. 4N-1114 [1] COVER  
11. 9Y-6089 C [1] GASKET  
12. 4P-7820 C [1] COVER-ACCESSORY DRIVE  
13. 125-9794 C [2] SEAL-O-RING  
  C   CHANGE FROM PREVIOUS TYPE
 

#SEBP39980012
 

4N-6798: COVER GP-FRONT HOUSING

4N-6798 COVER GP-FRONT HOUSING
ALSO AN ATTACHMENT
i00107929 SEBP3998
4N6798 COVER GP-FRONT HOUSING Parts scheme
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Parts for your 3412D MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6N-2509 [1] COVER  
  6N-2508 [1] GASKET  
2. 0S-1594 [3] BOLT (3/8-16X1-IN)  
3. 3M-0496 [1] STUD-TAPERLOCK (3/8-16X2.6-IN)  
4. 9S-8752 C [7] NUT-FULL (3/8-16-THD)  
5. 5M-2894 [11] WASHER-HARD (10.2X18.5X2.5-MM THK)  
6. 9N-5576 [1] COVER-FUEL PUMP GEAR  
  4N-1998 [1] GASKET (FUEL PUMP GEAR)  
7. 5F-4899 [4] BOLT (3/8-16X5.5-IN)  
8. 0L-1352 [6] BOLT (3/8-16X3.25-IN)  
9. 2P-1974 [3] STUD-TAPERLOCK (3/8-16X4.2-IN)  
10. 4N-0933 [1] GASKET  
11. 2P-2772 [1] COVER  
12. 1A-2029 [2] BOLT (3/8-16X1.125-IN)  
13. 3K-3256 [1] STUD-TAPERLOCK (3/8-16X1.7-IN)  
14. 4P-7820 C [1] COVER-ACCESSORY DRIVE  
  5F-3144 C [1] SEAL-O-RING  
15. 4F-9081 [1] STUD  
  C   CHANGE FROM PREVIOUS TYPE
 

#SEBP39980013
 

4P-9248: COVER GP-VALVE MECHANISM

4P-9248 COVER GP-VALVE MECHANISM
ALSO AN ATTACHMENT
i00372477 SEBP3998
4P9248 COVER GP-VALVE MECHANISM Parts scheme 4P9248 COVER GP-VALVE MECHANISM Parts scheme
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Parts for your 3412D MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6N-2985 [1] CAP AS-FILLER (ENGINE OIL)  
2. 7C-6514 [2] ADAPTER  
  272-2583 [2] SEAL-O-RING  
3. 9L-8925 [30] BOLT (5/16-18X1.25-IN)  
4. 5P-5678 BD SEAL  
5. 6N-2758 [1] COVER-ROCKER ARM (FRONT)  
6. 9Y-0015 [1] COVER-ROCKER ARM (REAR)  
7. 4P-4980 [2] BASE-VALVE MECHANISM COVER  
    (EACH INCLUDES)
  4W-2580 [1] BASE-VALVE MECHANISM COVER  
  6N-2944 [1] PLUG  
8. 4P-4980 [2] BASE-VALVE MECHANISM COVER  
    (EACH INCLUDES)
  4W-2580 [1] BASE-VALVE MECHANISM COVER  
  6N-2944 [1] PLUG  
9. 7C-6514 [1] ADAPTER  
  272-2583 [1] SEAL-O-RING  
10. 9L-8925 [27] BOLT (5/16-18X1.25-IN)  
11. 5P-5678 BD SEAL  
12. 6N-2758 [1] COVER-ROCKER ARM (FRONT)  
13. 9Y-0015 [1] COVER-ROCKER ARM (REAR)  
  B   USE AS REQUIRED
  D   ORDER BY THE METER
 

#SEBP39980014
 

213-3219: CRANKSHAFT GP

213-3219 CRANKSHAFT GP
ALSO AN ATTACHMENT
i01969801 SEBP3998
2133219 CRANKSHAFT GP Parts scheme
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Parts for your 3412D MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 253-1752 J [2] PLATE-THRUST  
2. 319-7401 Y [1] SEAL GP-CRANKSHAFT (FRONT)  
3. 319-0785 Y [1] SEAL GP-CRANKSHAFT (REAR)(FLYWHEEL HOUSING)  
4. 317-8766 J [7] BEARING-MAIN (STANDARD)  
  4W-5698 AB BEARING-MAIN (0.63-MM US)  
  4W-5699 AB BEARING-MAIN (1.27-MM US)  
  4W-5700 AB BEARING-MAIN (0.63-MM OS)  
  4W-5701 AB BEARING-MAIN (0.63-MM OS, 0.63-MM US)  
5. 213-3203 [1] CRANKSHAFT AS  
  4N-0684 [1] DOWEL  
  7S-5005 [1] DOWEL  
  151-2940 [1] GEAR-CRANKSHAFT (99-TEETH)  
   
    AVAILABLE REPAIR KIT(S):
  243-6718 AJ KIT-CRANKSHAFT BEARING (STANDARD)  
    (INCLUDES A COMPLETE SET OF MAIN BEARINGS & THRUST PLATES)
  A   NOT PART OF THIS GROUP
  B   USE AS REQUIRED
  J   KIT MARKED J INCLUDES PART(S) MARKED J
  Y   SEPARATE ILLUSTRATION
 

#SEBP39980015
 

126-1378: CYLINDER BLOCK AS

126-1378 CYLINDER BLOCK AS
PART OF 324-6128 CYLINDER BLOCK AS
ALSO AN ATTACHMENT
i00665124 SEBP3998
1261378 CYLINDER BLOCK AS Parts scheme
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Parts for your 3412D MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3P-1323 [14] BOLT-BEARING CAP (7/8-14X7.75-IN)  
2. 4N-6658 [2] BUSHING (1.3-IN WIDE)  
3. 4N-0685 [5] BUSHING (1-IN WIDE)  
4. 9H-1031 [14] WASHER-HARD (24X41.5X6-MM THK)  
5. 485-1966 [7] CAP-CRANKSHAFT  
6. 7W-6492 [2] PLUG-PIPE (1/2-14-THD)  
   
  4W-4588 AFJN SLEEVE-LIFTER BORE  
  4W-6061 AFLN SLEEVE  
  2W-3815 AFJN INSERT-LINER SEAT (1.605-MM THK)  
  6I-4363 AFJN INSERT-LINER SEAT (1.555-MM THK)  
  6I-4364 AFJN INSERT-LINER SEAT (1.655-MM THK)  
  5N-0093 AFJN INSERT-LINER SEAT (2.71-MM THK)  
  6I-4365 AFJN INSERT-LINER SEAT (2.66-MM THK)  
  6I-4366 AFJN INSERT-LINER SEAT (2.76-MM THK)  
  9Y-3368 AFJN INSERT-LINER SEAT (0.822-MM THK)  
  6I-4361 AFJN INSERT-LINER SEAT (0.772-MM THK)  
  6I-4362 AFJN INSERT-LINER SEAT (0.872-MM THK)  
  A   NOT PART OF THIS GROUP
  F   NOT SHOWN
  J   FOR SALVAGE OF DAMAGED LIFTER BORES IN CYLINDER BLOCK
  L   FOR SALVAGE OF THE BOTTOM LINER O-RING BORE
  N   QUANTITY TO BE DETERMINED BY USER
 

#SEBP39980016
 

238-8196: CYLINDER BLOCK AS

238-8196 CYLINDER BLOCK AS
S/N REA1-2267
COMPACTED GRAPHITE LINER
PART OF 238-8195 CYLINDER BLOCK GP
ALSO AN ATTACHMENT
i01970011 SEBP3998
2388196 CYLINDER BLOCK AS Parts scheme
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Parts for your 3412D MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
2. 4N-6658 [2] BUSHING (1.3-IN WIDE)  
3. 4N-0685 [5] BUSHING (1-IN WIDE)  
4. 215-2985 [12] LINER-CYLINDER BLOCK  
5. 155-0809 [12] SEAL-LINER  
6. 4N-5858 [7] CAP (CRANKSHAFT BEARING)  
7. 3P-1323 [14] BOLT-BEARING CAP (7/8-14X7.75-IN)  
8. 9H-1031 [14] WASHER-HARD (24X41.5X6-MM THK)  
9. 9L-5854 [12] BAND-FILLER (130.2-MM ID)  
10. 7W-6492 [2] PLUG-PIPE (1/2-14-THD)  
11. 155-2793 [12] SEAL-LINER  
12. 155-0810 [12] SEAL-LINER  
 

#SEBP39980017
 

261-4946: CYLINDER BLOCK AS

261-4946 CYLINDER BLOCK AS
S/N REA2268-2729
STEEL CYLINDER LINERS
PART OF 238-8195 CYLINDER BLOCK GP
ALSO AN ATTACHMENT
i02291177 SEBP3998
2614946 CYLINDER BLOCK AS Parts scheme
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Parts for your 3412D MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
2. 4N-6658 [2] BUSHING (1.3-IN WIDE)  
3. 4N-0685 [5] BUSHING (1-IN WIDE)  
4. 253-8766 [12] LINER-CYLINDER BLOCK  
5. 155-0809 [12] SEAL-LINER  
6. 4N-5858 [7] CAP (CRANKSHAFT BEARING)  
7. 3P-1323 [14] BOLT-BEARING CAP (7/8-14X7.75-IN)  
8. 9H-1031 [14] WASHER-HARD (24X41.5X6-MM THK)  
9. 9L-5854 [12] BAND-FILLER (130.2-MM ID)  
10. 7W-6492 [2] PLUG-PIPE (1/2-14-THD)  
11. 155-2793 [12] SEAL-LINER  
12. 155-0810 [12] SEAL-LINER  
 

#SEBP39980018
 

324-6128: CYLINDER BLOCK AS

324-6128 CYLINDER BLOCK AS
S/N REA2730-UP
PART OF 238-8195 CYLINDER BLOCK GP
ALSO AN ATTACHMENT
i03166660 SEBP3998
3246128 CYLINDER BLOCK AS Parts scheme
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Parts for your 3412D MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 126-1378 Y [1] CYLINDER BLOCK AS  
3. 556-0701 [12] LINER-CYLINDER  
4. 155-0809 [12] SEAL-LINER  
8. 9L-5854 [12] BAND-FILLER (130.2-MM ID)  
10. 155-2793 [12] SEAL-LINER  
11. 155-0810 [12] SEAL-LINER  
  Y   SEPARATE ILLUSTRATION
 

#SEBP39980019
 

238-8195: CYLINDER BLOCK GP

238-8195 CYLINDER BLOCK GP
S/N REA1-2267
SIDE ACCESS
ALSO AN ATTACHMENT
i01970008 SEBP3998
2388195 CYLINDER BLOCK GP Parts scheme
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Parts for your 3412D MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
2. 4N-1650 [4] DOWEL  
3. 8T-6763 [4] PLUG-PIPE (1/4-18-THD)  
4. 238-8196 Y [1] CYLINDER BLOCK AS  
5. 8T-6757 [6] PLUG-PIPE  
6. 225-3101 [2] GASKET-PLATE  
7. 225-3100 [2] PLATE-SPACER  
8. 7C-9614 [3] PLUG-TAPERLOCK (1-5/8-12-THD)  
9. 4N-0683 [4] DOWEL  
10. 9S-4190 [5] PLUG-O-RING (7/8-14-THD)  
  114-4427 [5] SEAL-O-RING  
11. 3B-0645 [1] PLUG-CUP (32.08-MM OD)  
12. 6L-4428 [3] STUD-TAPERLOCK (3/8-16X4.01-IN)  
13. 7C-7407 [1] STUD  
14. 7W-6534 [6] PLUG-PIPE  
15. 5P-8356 [4] SEAL-O-RING  
16. 3S-6605 [2] PLUG-CUP  
  Y   SEPARATE ILLUSTRATION
 

Information:

Engine News
A New Front and Rear Cover Seal Is Available for Certain 3400 Series Industrial Engines {1151, 1157, 7555}
2013/03/29
Specifications
Flywheel Housing
3408C, 3412C and 3412D High Performance Marine Engines
Testing and Adjusting
Flywheel Housing - Inspect
3408C, 3412C and 3412D High Performance Marine Engines

Caterpillar Parts SIS Catalog 3412D :

COVER GP-CYLINDER BLOCK
125-4360 COVER GP-CYLINDER BLOCK
CLUTCH GP
5N-7330 CLUTCH GP
CLUTCH GP
5N-7329 CLUTCH GP
CLUTCH AS
5N-3790 CLUTCH AS
CLUTCH AS
5N-3789 CLUTCH AS
CAMSHAFT GP
4N-0965 CAMSHAFT GP
BRACKET GP-MOUNTING
295-1571 BRACKET GP-MOUNTING
238-8191 ENGINE AR
COVER GP-FLYWHEEL HOUSING
4N-7798 COVER GP-FLYWHEEL HOUSING
COVER GP-FRONT HOUSING
4N-6798 COVER GP-FRONT HOUSING
COVER GP-VALVE MECHANISM
4P-9248 COVER GP-VALVE MECHANISM
CRANKSHAFT GP
213-3219 CRANKSHAFT GP
CYLINDER BLOCK AS
126-1378 CYLINDER BLOCK AS
CYLINDER BLOCK AS
238-8196 CYLINDER BLOCK AS
CYLINDER BLOCK AS
261-4946 CYLINDER BLOCK AS
CYLINDER BLOCK AS
324-6128 CYLINDER BLOCK AS

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