Replacement Parts for Caterpillar® Engines
CAT DIESEL ENGINE PARTS LIST
CAT D346, CAT D348, CAT D349, CAT D353
Caterpillar D346/19.9L 8 Cylinder
Diesel Bore 5.400
1191 CID Stroke 6.500
CYLINDER KIT
8 PLG8N0931 Cylinder kit 5.4QQ bore, 2.00 pin, PC, 4 valve relief [8N0931 piston, 8NQ822 rings, 7N9808 pin, 3F8513 retainers, 1260739 liner]
8 PLG9N2874 Cylinder kit 5.400 b〇rer 2.00 pin, PC [9N2874 piston, 8N0822 rings, 7N9806 pin, 3F8513 retainers, 1260739 liner]
Replaces LK0735 cylinder kit in sets
8 LK0735-F Cylinder kit 5.4QQQ bore, PC, 2.000 pin# straight rod, dual nir 1/4 oil ring [7N0735 piston, 1PQ734 rings, 7N9806 pin, 7E5665 retainers, 1260739 liner, 5P8789 seal kit]
8 8N0931 Piston body 5.4000 bore, 2.00 pin, PCf 4 valve relief, 1/8 oil ring
8 9N2874 Piston body 5.400 bore, 2.00 pin, PC, straight rod, 4 valve relief with plug, 1/8 oil ring
Replaces 7N0735 piston in sets
8 7N0735-F Piston body 5.4QQQ bore, 2.QQ pin, PC, straight rod, early type piston L/F, dual-ni, 1 /4 oil ring groove
8 8N0822 Ring set 1/8 keystone top ring [8ND502 top, 2P2817 mid, 7N7Q78 oil] 1 cyl set
Used with 8NQ931 and 9N2874 piston body
8 1P0734-F Ring set 5.4QQQ bore, 114 oil ring [1 cyl set]
Used with 7ND735 piston body
8 7N 明 08 Piston pin 2.ODD diar 4.292 length
8 7N9806 Piston pin 2.Q00 dia, 4.525 length (straight and narrow taper rod)
16 3F8513 Retiner piston pin
16 7E5665 Retainer piston pin Use with 2.QQQ pin diameter [repl 8N7295]
8 1260739 Cylinder liner 5.4QQQ bore [uses (3) 3S3978, (1) 9L5854 seals] [repl 6M8700]
8 5P8789 Cylinder liner oring kit Contains: (3) 3S3978, (D9L5854
24 3S3978 Cylinder liner oring
8 9L5854 Cylinder liner oring Upper band seal, 1 per liner
BEARINGS
4 7N2458 Bearing main pair Std
Early engines used with thrust bearing
4 7N2459 Bearing main pair ■025
4 7N2461 Bearing main pair ■050
1 7N2463 Bearing thrust pair Std
Earlv engines with thrust bearing
1 7N2464 Bearing thrust pair .025
1 7N2465 Bearing thrust pair ■050
5 8N6652 Bearing main pair Std, 5.2500 journal, 5.635Q housing bore, 1.744 length
Late engines used with thrust washers
5 8N5957 Bearing main pair .025
5 8N5958-F Bearing main pair ■050
2 9S1162 Thust washer 0.186 thick
Late engines with thrust washers
8 7N2581 Bearing rod pair Std, 4.3745/4.3755 journal, 4.7210 housing bore, 1.373 length, notched oil groove
Early
8 7N2582-F Bearing rod pair ■025
8 7N2583-B Bearing rod pair ■050
8 1W8539 Bearing rod pair Std, 4.3742/4.3752 journal, 4.7210 housing bore, 1.373 length, short oil groove
Late
8 4W5693 Bearing rod pair .025 [repl 8N5948]
8 4W5694 Bearing rod pair ■050
Caterpillar D346/19.9L 8 Cylinder
Diesel (Continued) Bore 5.400
1191 CID Stroke 6.500
8 1M6107 Bushing con rod 2.001 ID, 2.183 0D, 1.875 OAL
Early
8 8N2018 Bushing con rod Wide taper rod, 1.9845 ID, 2.1825 0D, 1.875 OAL (can use 4P8495)
Late
GASKET & SEALS
CATGASKET NOTE Far gasket sets: Call with Serial and Arrangement Numbers
CAMSHAFT
CAMSHAFT CAMSHAFT Remanufactured available, call with casting number
VALVE TRAIN
CYLHEAD NOTE For complete and bare cylinder heads – Refer to Cylinder Head Catalog or Call with casting
16 1N4885 Valve intake 1.771 head dia, 5.997 OAL [repl 1P0407]
16 7E7830 Valve exhaust 1.646 head dia, 5.997 length [repl 1P1Q81]
64 2A4429 Valve lock 0.372 stem dia, 2G, 7 degree
32 6N2236 Valve guide [repl 2M3293]
32 3S3018 Valve spring
32 2S2813-B Rotator
32 9M3205 Insert intake
32 1W5283 Valve insert Exhaust, I PD standard size 1.692″
FUEL I INJECTOR
8 8N1831-F Nozzle Capsule nozzle (repl 7S1059)
8 8N3176-F Nozzle Capsule nozzle {repl 7M4190)
TU^OIAIR
TURBO TURBOCHARGER New or remanufactured available, call far pricing
Caterpillar D348/29.3L 12 Cylinder
Diesel Bore 5.400
1786 CID Stroke 6.500
CYLINDER KIT
12 PLG8N0931 Cylinder kit 5.4QQ bore, 2.00 pin, PC, 4 valve relief [8N0931 piston, 8NQ822 rings, 7N9808 pin, 3F8513 retainers, 1260739 liner]
12 PLG9N2874 Cylinder kit 5.400 bore, 2.00 pin, PC [9N2874 piston, 8N0822 rings, 7N9806 pin, 3F8513 retainers, 1260739 liner]
Replaces LK0735 cylinder kit in sets
12 LK0735-F Cylinder kit B.4QQQ bore, PC, 2.000 pin, straight rod, dual nir 1/4 oil ring [7N0735 piston, 1PQ734 rings, 7N9806 pin, 7E5665 retainers, 1260739 liner, 5P8789 seal kit]
12 8N0931 Piston body 5.4000 bore, 2.Q0 pin, PCf 4 valve relief, 1/8 oil ring
12 9N2874 Piston body 5.400 bore, 2.00 pin, PC, straight rod, 4 valve relief with plug, 1/8 oil ring
Replaces 7N0735 piston in sets
12 7N0735-F Piston body 5.4QQQ bore, 2.QQ pin, PC, straight rod, early type piston L/F, dual-ni, 1 /4 oil ring groove
12 8N0822 Ring set 1/8 keystone top ring [8ND502 top, 2P2817 mid, 7N7Q78 oil] 1 cyl set
Used with 8NQ931 and 9N2874 piston body
12 1P0734-F Ring set 5.4QQQ bore, 1/4 oil ring [1 cyl set]
Used with 7N0735 piston body
12 7N 明 08 Piston pin 2.ODD diar 4.292 length
12 7N9806 Piston pin 2.QQQ dia, 4.525 length (straight and narrow taper rod)
24 3F8513 Retiner piston pin
24 7E5665 Retainer piston pin Use with 2.QQQ pin diameter [repl 8N7295]
12 1260739 Cylinder liner 5.4QQQ bore [uses (3) 3S3978, (1) 9L5854 seals] [repl 6N8700]
12 5P8789 Cylinder liner oring kit Contains:⑶ 3S3978,⑴ 9L5854
36 3S3978 Cylinder liner oring
12 9L5854 Cylinder liner oring Upper band seal, 1 per liner
BEARINGS
D348BRG1 NOTE: Early eng use:(7) 2S2838, (2) 9S1162, (4) 2H1190 [repl 2S283g：(1) 2S2838, (2) 9S1162, (4) 2H1190
7 2S2838 Bearing main pair Std
7 5S6303 Bearing main pair .025
7 5S6306 Bearing main pair ■050
4 2H1190 Dowel Main thrust
D348BRG2 NOTE: Mid eng use: (7) 8N6652, (2) 9S1162; 1.744 length
7 8N6652 Bearing main pair Std, 5.2500 journal, 5.6350 housing bore, 1.744 length
7 8N5957 Bearing main pair ■025
7 8N5958-F Bearing main pair ■050
D348BRG3 NOTE: Late eng use: (7) 4W5488, (2) 9S1162; 1.886 length
7 4W5488 Bearing main pair Std, 5.2500 journal, 5.635Q housing bore, 1.886 length [repl 8N5622]
7 4W5689 Bearing main pair .025 [repl 8N6528]
7 4W5690-B Bearing main pair .050 [repl 8N6529]
2 9S1162 Thust washer 0.186 thick
12 7N2581 Bearing rod pair Std, 4.3745/4.3755 jaurnal, 4.7210 housing bore, 1.373 length, notched oil groove
Early and Mid engines
12 7N2582-F Bearing rod pair ■025
12 7N2583-B Bearing rod pair ■050
12 1W8539 Bearing rod pair Std, 4.3742/4.3752 journal, 4.7210 housing bore, 1.373 length, short oil groove
Late engines
12 4W5693 Bearing rod pair .025 [repl 8N5948]
12 4W5694 Bearing rod pair ■050
Caterpillar
Diesel 1786 CID
D348/29.3L(Continued)
12 Cylinder Bore 5.400 Stroke 6.500
12 8N2018 Bushing con rod Wide taper rod, 1.9845 IDf 2.1825 0Dr 1.875 OAL (can use 4P8495)
GASKET & SEALS
CATGASKET NOTE For gasket sets: Call with Serial and Arrangement Numbers
CAMSHAFT
CAMSHAFT CAMSHAFT Remanufactured available, call with casting number
VALVE TRAIN
CYLHEAD NOTE For complete and bare cylinder heads – Refer to Cylinder Head Catalog or Call with casting
24 1N4885 Valve intake 1.771 head diar 5.997 OAL [repl 1P0407]
24 7E7830 Valve exhaust 1.646 head diar 5.997 length [repl 1P1081]
96 2A4429 Valve lock 0.372 stem diar 2Gr 7 degree
48 6N2236 Valve guide [repl 2N3293]
48 3S3018 Valve spring
48 2S2813-B Rotator
24 9M3205 Insert intake
24 1W5283 Valve insert Exhaust, IPD standard size 1.692″
FUEU INJECTOR
m 8N1831-F Nozzle Capsule nozzle (repl 7S1059)
Caterpillar
Diesel 2382 CID
D349 / 39.0L 16 Cylinder Bore 5.400 Stroke 6.500 CYLINDER KIT
16 PLG8N0931 Cylinder kit 5.4QQ bore, 2.00 pin, PC, 4 valve relief [8N0931 piston, 8NQ822 rings, 7N9808 pin, 3F8513 retainers,
1260739 liner]
16 8N 的 31 Piston body 5.4000 bore, 2.00 pin, PCf 4 valve relief, 1/8 oil ring
16 8N0822 Ring set 1/8 keystone top ring [8N0502 top, 2P2817 mid, 7M7078 oil] 1 cyl set
16 7N98的 Piston pin 2.000 dia, 4.292 length
32 3F8513 Retiner piston pin
16 1260739 Cylinder liner 5.4QQQ bore [uses (3) 3S3978, (1) 9L5854 seals] [repl 6M8700]
16 5P8789 Cylinder liner oring kit Contains: (3) 3S3978, (D9L5854
48 3S3978 Cylinder liner oring
16 9L5854 Cylinder liner oring Upper band seal, 1 per liner
BEARINGS
9 8N6652 Bearing main pair Std, 5.2500 journal, 5.G35Q housing bore, 1.744 length
9 8N5957 Bearing main pair ■025
9 8N5958-F Bearing main pair .050
2 9S1162 Thust washer 0.186 thick
16 7N2581 Bearing rod pair Std, 4.3745/4.3755 journal, 4.7210 housing bore, 1.373 length, notched oil groove
Early engines
16 7N2582-F Bearing rod pair ■025
16 7N2583-B Bearing rod pair .050
16 1W8539 Bearing rod pair Std, 4.3742/4.3752 journal, 4.7210 housing bore, 1.373 length, short oil groove
Late engines
16 4W5693 Bearing rod pair .Q25 [repl 8N5948]
16 4W5694 Bearing rod pair ■050
16 8N2018 Bushing con rod Wide taper rod, 1.9845 ID, 2.1825 0D, 1.875 OAL (can use 4P8495)
GASKET & SEALS
CATGASKET NOTE Far gasket sets: Call with Serial and Arrangement Numbers
CAMSHAFT
CAMSHAFT CAMSHAFT Remanufactured available, call with casting number
VALVE TRAIN
CYLHEAD NOTE For complete and bare cylinder heads – Refer to Cylinder Head Catalog or Call with casting
32 1N4885 Valve intake 1.771 head dia, 5.997 OAL [repl 1P0407]
32 7E7830 Valve exhaust 1.646 head dia, 5.997 length [repl 1P1081]
128 2A4429 Valve lock 0.372 stem dia, 2G, 7 degree
64 6N2236 Valve guide [repl 2N3293]
64 3S3018 Valve spring
64 2S2813-B Rotator
32 9M3205 Insert intake
32 1W5283 Valve insert Exhaust, IPD standard size 1.692″
FUEL | INJECTOR I
16 8N1831-F Nozzle Capsule nozzle (repl 7S1059)
Tm^OIAIR I
TURBO TURBOCHARGER New or remanufactured available, call far pricing
Caterpillar D353/24.2L 6 Cylinder
Diesel Bore 6.250
1473 CID Stroke 8.000
CYLINDER KIT
6 PLG7N4515 Cylinder kit 6.25QQ bore, rectangular ring [7N4515 piston, 1W5105 rings, 7N981Q pin, 7M4926 retainers, 8N9174 liner]
6 PLG7N5036 Cylinder kit 6.25QQ bore, keystone ring [7N5Q3G piston, 1N3601 rings, 7N981Q pin, 7M492G retainers, 8N9174 liner
6 8M3167 Piston body 6.25QQ bore, PC [3S4066]
6 7N4515 Piston body 6.2500 bore, PC [3S5502] rectangular compression ring
6 7N5036 Piston body 6.2500 bore, PC [7N5037] keystone compression ring
6 5H1085 Piston pin 2.4 dia; use with 8M3167 piston
6 7N9810 Piston pin 2.5 dia; use with 7N4515f 7N5Q36 piston [4L3843]
12 7M4926 Retainer piston pin use with 2.4DD dia pin [repl 6B2291]
6 1W5105 Ring set 6.25QQ bore, use with 8M3167f 7N4515 piston [9S8973]; rectangular comp ring
6 1N3601 Ring set 6.25QQ bore, use with 7N5036 piston; keystone comp ring
6 8N9174 Cylinder liner 6.25QQ bore
6 5P8970 Cylinder liner oring kit For one liner, contains: |3) 6L7815, (1) 8N4708
18 6L7815 Cylinder liner oring Lower liner seal; contained in 5P8970 seal kit
6 8N4708 Cylinder liner oring Upper filler band; contained in 5P897Q seal kit
BEARINGS
D353BRG1 NOTE: Thick wall bearings, 0.2474 wall, 4.6250 journal, 5.124Q/5.1250 housing bore
4 9M3894-F Bearing main pair Std; 0.2474 thickness
1 9M3893-F Bearing main pair Std; 0.2474 thickness
1 9M3895-F Bearing main pair Std; 0.2474 thickness
1 9M3896-F Bearing thrust pair Std; 0.2474 thickness
4 9M4873-F Bearing main pair .025
1 9M4872-F Bearing main pair .025
1 9M4874-F Bearing main pair .025
1 9M4875-F Bearing thrust pair .025
4 9M4878-F Bearing main pair .050
1 9M4877-F Bearing main pair .Q5Q
1 9M4879-F Bearing main pair .050
1 9M4880-F Bearing thrust pair .050
D353BRG2 NOTE: Thin wall bearings, 0.1805 wall 4.G25Q journal, 4.9883/4.9893 housing bore
4 1N4317 Bearing main pair Std; Q.1805 thick, 4.6250 journal, 4.989Q housing boref 1.874 length
1 1N4316 Bearing main pair Std; 0.1805 thick, 4.6250 journal, 4.9890 housing bore, 2.382 length
1 1N4318 Bearing main pair Std; 0.1805 thick, 4.6250 journal, 4.9890 housing bore, 2.972 length
1 1N4331 Bearing thrust pair Std; Q.1805 thick, 4.6250 journal, 4.989Q housing boref 2.874 and 3.671 length
4 1N4320 Bearing main pair .025
1 1N4319 Bearing main pair .025
1 1N4321 Bearing main pair .025
1 1N4332 Bearing thrust pair .025
4 1N4323 Bearing main pair .Q5Q
1 1N4322 Bearing main pair .050
1 1N4324 Bearing main pair .050
1 1N4333 Bearing thrust pair .050
6 1N4336 Bearing rod pair Std; 4.1250 journal, 4.4400 housing bore, 1.980 length [4冊884,9M3的2]
6 CB778AL10-CL Bearing rod pair .010
6 1N4337 Bearing rod pair .Q25 [5H5993, 9M4871]
Caterpillar D353 / 24.2L 6 Cylinder
Diesel (Continued) Bore 6.250
1473 CID Stroke 8.000
6 1N4338 Bearing rod pair .050 丨 5H5992,9M4876]
6 2H2330 Bearing cam
1 2H7878 Bearing cam
6 4H9842 Bushing con rod
6 8N2275 Bushing con rod 2.450 ID, 2.678 0Df 2.250 length
GASKET & SEALS
CATGASKET NOTE For gasket sets: Call with Serial and Arrangement Numbers
1 2W6769-B Seal crankshaft front Piston ring type
1 2W2191 Seal crankshaft rear Piston ring type
1 2L3451 Gasket oil pan
CAMSHAFT
CAMSHAFT CAMSHAFT Remanufactured available, call with casting number
12 2H3069-B Lifter Solid
VALVE TRAIN
CYLHEAD NOTE For complete and bare cylinder heads – Refer to Cylinder Head Catalog or Call with casting
D353HEAD1 NOTE: Tapered groove valve stem with Q.4955 dia and 3 locks each
6 7M7817 Valve intake 2.505 head, 0.4955 stem, tapered groove [4H9805, 6H3186,1M7452]
6 8N3723 Valve exhaust 2.340 head, 0.4955 stem, tapered groove [4H9804, 6H3187, 8H7097,4N6883, 3N1141]
12 7S6323 Valve spring Single spring
Single spring, use with 7N7639 rotocap
12 4F5408-F Valve spring Outer, 1.641 QD, 2.421 free
Dual spring
12 4F5409-F Valve spring Inner, 1.145 0D# 2.359 free
Dual spring
6 4N3664 Valve guide Intake; non flanged, use with 3N1414 spacer; for Q.4955 stem dia, 5.045 length
6 6N8847 Valve guide Exhaust; non flanged, use with 3N1414 spacer; for 0.4955 stem dia, 5.438 length
12 3N1414 Spacer Use with non-flanged guide
36 3B1143 Valve lock No bead, for tapered valve stem, for 0.4995 stem
12 7N7639 Rotator [fepl 8M7637,4S7468]
Use with single valve spring
12 7F7666-B Rotator
Use with dual valve springs
12 3H5867 Retainer
12 used; 6 used on intake with 3B1142 used on exhaust
6 3B1142 Retainer
6 used an exhaust with 3H5867 retainer on intake
6 5H1464 Valve seat Intake
use with 6H8514 cylinder head
6 5S1757 Valve seat Intake
6 5H1463 Valve seat Exhaust
use with 6H8514 cylinder head
6 8M4014 Valve seat Exhaust
D353HEAD2 NOTE: Two groove valve stem with Q.3717 dia and 2 locks each
6 1W8606 Valve intake 2.5Q5 head, 0.3717 stem, 2 groove
6 2W3211 Valve exhaust 2.35Q head, 0.3717 stem, 2 groove
6 1W1822 Valve exhaust 2.350 head, 0.3717 stem, 2 groove
12 9M5349 Valve spring Inner, 1.125 0D# 2.201 free
12 9M5350 Valve spring Outer, 1.654 0Df 2.574 free
6 2N9298 Valve guide Intake; for 0.3717 stem, 5.065 length
6 2N9299 Valve guide Exhaust; for 0.3717 stem, 5.450 length
Caterpillar D353/24.2L 6 Cylinder
Diesel (Continued) Bore 6.250
1473 CID Stroke 8.000
12 3N1414 Spacer Use with non-flanged guide
24 2A4429 Valve lock 0.372 stem dia, 2Gr 7 degree
12 7N7639 Rotator [r 印I8M7637,4S7468]
6 1W3062 Retainer Intake; includes 8N778Q shield
6 2N9297 Retainer Exhaust
6 5S1757 Valve seat Intake
6 8M4014 Valve seat Exhaust
FUEL I INJECTOR
6 5H7936-F Nozzle service group Contains: capsule nozzle, orings, seal ring
6 7M7431-F Nozzle service group Contains: c叩如le nozzle, orings, seal ring
6 8N1831-F Nozzle Capsule nozzle (repl 7S1059)
COOLING SYSTEM
2 2S4044 Thermostat 170 degree
2 6N4540 Thermostat 180 degree
2 4W4841 Thermostat 190 degree
2 4L3848 Seal thermostat Use with 6N4540 and 4W4841 thermostats
TU^OIAIR
TURBO TURBOCHARGER New or remanufactured available, call far pricing
BLOCK
8N6938 Insert block 0.0625f stainless steel
4 1W6265 Sleeve block Z stepped
2 1W6266 Sleeve block Z stepped
5P0936 Sleeve block L type. Cast Iron