The Caterpillar 3412E engine line groups 2 variant designations. Parts and fitment are pooled here so a cross-reference found on one variant surfaces for the whole family.
| Part # | Description | Category |
|---|---|---|
| 102-9720 | Cleaning Kit (detergent and oil for AIRSEP air cleaner elements) | Air filter |
| 106-3973 | Air filter inner | Air filter |
| 142-1404 | Air filter inner | Air filter |
| 4N0015 | Air filter outer | Air filter |
| 55.3 | Air cleaner, single-stage, dry type | Air filter |
| 7E4254 | CLEANER GP - AIR | Air filter |
| 8N6309 | Air filter outer | Air filter |
| 5N5692 | CHARGING ALTERNATOR 24V 45 AMP | Alternator |
| PA5346 | CHARGING ALTERNATOR 24V 45 AMP | Alternator |
| 1167846 | DIGITAL VOLTAGE REGULATOR | Avr |
| 164-4599 | V-belt | Belt |
| 6N6798 | V-belt | Belt |
| 9L6639 | V-belt | Belt |
| M-7W6129 | Alternator, V, .63in (15.9mm) - 80.00in (2032mm) | Belt |
| M-9L6639 | Alternator, V, .63in (15.9mm) - 57.01in (1448mm) | Belt |
| 111-2369 | Maintenance Element | Coolant filter |
| 1R-1712 | Standard Efficiency Fuel Filter | Filter |
| 101-2844 | 1 gallon (3.8L) | Fluid |
| 119-5152 | Cat Engine Oil (quart bottle) | Fluid |
| 1U-5490 | Hydrosolv 4165 liquid cleaner, 19 L (5 US gallon) | Fluid |
| 5N-5561 | Silicone Lubricant | Fluid |
| 133-5673 | Fuel/Water Separator | Fuel filter |
| 1R-0749 | Fuel Secondary - ADV | Fuel filter |
| 1R-0750 | High Efficiency Fuel Filter | Fuel filter |
| 1R0749 | Filter fuel | Fuel filter |
| 1R0751 | Fuel Filter (secondary) | Fuel filter |
| 326-1641 | Axial seal FWS | Fuel filter |
| 326-1642 | Filter water separator | Fuel filter |
| 326-1643 | Filter water separator | Fuel filter |
| 326-1644 | Filter water separator | Fuel filter |
| 3S3875 | Filter fuel | Fuel filter |
| 8H7204 | PRIMARY FUEL FILTER | Fuel filter |
| PL1697 | PRIMARY FUEL FILTER | Fuel filter |
| 1282922CAT | Water Pump Gasket Set - 0.4 lbs/ 0.18 kgs, 5" Length, 27mm Width, 27mm Depth, 11 Application: 3400 | Gasket |
| 138-4611 | Gasket exhaust manifold | Gasket |
| 1425868CAT | Crankshaft Oil Seal Group Gasket - Rear, 3400, 0.7 lbs/ 0.31 kgs, 17mm Length, 5" Width, 17mm Depth; Flanged Face Sleeve | Gasket |
| 153-9653 | Gasket cylinder head | Gasket |
| 1539653CAT | Cylinder Head Gasket - 3406E; ESN's: 1LW0001-00229; 2SW0001--0405; 5DS0001-00048; 6TS0001-20554; 5EK 0001-up | Gasket |
| 1609874CAT | Single Cylinder Liner Gasket Set - 3406/ 3412 0.1 lbs/ 0.04 kgs | Gasket |
| 1669144CAT | Housing Gasket - Front, 3406E | Gasket |
| 2161252CAT | Single Cylinder Head Gasket Set - 3406/ 3406E | Gasket |
| 2245122CAT | Cylinder Head Gasket - 3406E | Gasket |
| 2486744CAT | Single Cylinder Head Gasket Set - 5.6 lbs/ 2.54 kgs, For Use On C-9 MFF; 3406E 1LW; 3406E 1mm, 3406E 2WS; 3406E 5DS; 3406E 6TS | Gasket |
| 3406462MCBCAT | Inframe Chassis Gasket Set - 3406E 5EK | Gasket |
| 4N1151 | Gasket oil pan | Gasket |
| DM-3E3305 | GASKET SET, WP OH 3412 | Gasket |
| DM-8C4402 | GASKET SET, FUEL SYSTEM 3412 | Gasket |
| M-1252107 | Fuel System Set | Gasket |
| M-1282922 | Water Pump Mounting Gasket | Gasket |
| M-1415787 | Oil Cooler Set | Gasket |
| M-1429672 | Central & Lower Set | Gasket |
| M-1609874 | Gasket Set - Cylinder Liner Packing | Gasket |
| M-2088350 | Air Compressor Set | Gasket |
| M-2323679 | Rear Structure Set | Gasket |
| M-2410825 | Turbocharger Installation Set | Gasket |
| M-3639020 | Gasket Set - Central & Lower | Gasket |
| M-3639024 | Gasket Set - Rear Structure | Gasket |
| M-3648129 | Gasket Set - Rear Structure | Gasket |
| M-3648338 | Gasket Set - Front Structure | Gasket |
| M-3766577 | Front Structure Set | Gasket |
| M-4359418 | Gasket Set - Front Structure | Gasket |
| M-4499116 | Gasket Set - Front Structure | Gasket |
| M-4599781 | Gasket Set - Oil Cooler & Lines | Gasket |
| M-4600714 | Gasket Set - Central & Lower | Gasket |
| M-4600735 | Gasket Set - Rear Structure | Gasket |
| M-4600780 | Gasket Set - Single Cylinder Head | Gasket |
| M-4620795 | Gasket Set - Oil Cooler & Lines | Gasket |
| M-4627233 | Gasket Set - Rear Structure | Gasket |
| M-4679007 | Gasket Set - Rear Structure | Gasket |
| M-4711663 | Gasket Set - Central & Lower | Gasket |
| M-4N1151 | Oil Pan Gasket | Gasket |
| M-4N1151-6 | Oil Pan Gasket | Gasket |
| M-5P5678-6 | Valve Cover Gasket | Gasket |
| M-5P5678-9 | Valve Cover Gasket | Gasket |
| MC1F7C2888CAT | Inframe Overhaul Kit - 3406E 5EK | Gasket |
| MCB3406461 | Overhaul Gasket Set | Gasket |
| MCB3406462 | In-Chassis Gasket Set | Gasket |
| MCB3406463 | Cylinder Head Gasket Set | Gasket |
| MCB3406463CAT | Cylinder Head Gasket Kit - 3406E 5EK | Gasket |
| MCB3406471 | Overhaul Gasket Set | Gasket |
| MCB3406472 | In-Chassis Gasket Set | Gasket |
| MCB3406473 | Cylinder Head Gasket Set | Gasket |
| MCB3406473CAT | Cylinder Head Gasket Kit - 3406E LLW 2WS 5DS 6T | Gasket |
| MCBC15993 | Cylinder Head Gasket Set | Gasket |
| 3T8705 | Glow plug | Glow plug |
| 3T8706 | Glow plug | Glow plug |
| 3N6668 | FLEXIBLE FUEL LINES | Hose |
| 1R0741 | Filter hydraulic | Hydraulic filter |
| 3N8449 | IMPELLER | Impeller |
| IMP0026 | IMPELLER | Impeller |
| 8S-2245 | Injection Cleaning Tool Group | Injector |
| R-10R0955 | Fuel Injector - Reman | Injector |
| R-10R0956 | Fuel Injector - Reman | Injector |
| R-10R1000 | Fuel Injector - Reman | Injector |
| R-10R1273 | Fuel Injector - Reman | Injector |
| R-10R2780 | Fuel Injector - Reman | Injector |
| R-10R3261 | Fuel Injector - Reman | Injector |
| R-10R3265 | Fuel Injector - Reman | Injector |
| R-10R6163 | Fuel Injector - Reman | Injector |
| R-10R8501 | Fuel Injector - Reman | Injector |
| 9U-7227 | Injector Height Gauge | Injector height gauge |
| 296-8325 | Crankcase Ventilation (CV) Filter | Ocv filter cartridge |
| 102-2828 | Filter oil | Oil filter |
| 10R-9557 | Oil Filter | Oil filter |
| 175-7546 | Oil Filter Cutter | Oil filter |
| 1R-0713 | Oil Filter (Engine) (Alternative) | Oil filter |
| 1R-0716 | Engine Oil | Oil filter |
| 1R-1808 | Engine Oil - ADV | Oil filter |
| 1R0716 | Filter oil | Oil filter |
| 1R1808 | Filter oil | Oil filter |
| 9M9740 | Filter oil | Oil filter |
| 124-2946 | Lifting Bracket | Service part / kit |
| 128-4124 | Kit without Conditioner | Service part / kit |
| 1343761CAT | Piston Ring - Top, 3406E | Service part / kit |
| 163-1128 | Kit with Liquid | Service part / kit |
| 163-1129 | Kit with Element | Service part / kit |
| 169-8373 | Fluid Sampling Bottle | Service part / kit |
| 16CM43-0001 | Cylinder Head Assembly | Service part / kit |
| 16CM43-0002 | Piston Assembly | Service part / kit |
| 16CM43-0003 | Connecting Rod Assembly | Service part / kit |
| 16CM43-0004 | Crankshaft Assembly | Service part / kit |
| 16CM43-0005 | Valve Train Assembly | Service part / kit |
| 174-6854 | Hydrosolv 100 liquid cleaner, 19 L (5 US gallon) | Service part / kit |
| 1765749CAT | Piston Ring - Intermediate, 3406E | Service part / kit |
| 177-9778 | Base | Service part / kit |
| 1899771CAT | Oil Control Piston Ring - Intermediate, 3406E/ C15 | Service part / kit |
| 195-1068 | Base | Service part / kit |
| 1U-8760 | Chain Wrench | Service part / kit |
| 206-5756 | PrimeTime Prime Only Configuration Kit | Service part / kit |
| 256-0326 | Oxidation Catalyst Assembly - Round | Service part / kit |
| 304-7755 | Cat Regeneration System | Service part / kit |
| 305-2389 | Wire Brush | Service part / kit |
| 4C-9301 | Coolant Conditioner Test Kit | Service part / kit |
| 4P7610 | PICK UP GP - MAGNETIC | Service part / kit |
| 5P-3413 | Pipe Sealant | Service part / kit |
| 6N8878 | FUEL PRESSURE GAUGE | Service part / kit |
| 703493 | SHAFT | Service part / kit |
| 7C3874 | BATTERY CHARGER 10 AMP | Service part / kit |
| 7E6248 | HEATER GP - JACKET WATER | Service part / kit |
| 7L7872 | 24 VOLT BATTERY SET | Service part / kit |
| 7N3229 | Connecting rod | Service part / kit |
| 8N1728 | Connecting rod | Service part / kit |
| 8T-5296 | Coolant Conditioner Test Kit | Service part / kit |
| 8T1589 | Maintenance Charge | Service part / kit |
| 8T9190 | Refill Charge | Service part / kit |
| 9S-3263 | Thread lock | Service part / kit |
| 9Y6054 | Connecting rod | Service part / kit |
| DZ111166 | (3402) (3404) (3408) (3409) (974G) | Service part / kit |
| DZ114695 | DEF TANK INLET SCREEN | Service part / kit |
| LEHW0155-01 | CATERPILLAR® ENGINE SPECIFICATIONS | Service part / kit |
| M-2477133 | 1 Regulator - 190ºC | Service part / kit |
| M-2485513 | 1 Regulator - 180ºC | Service part / kit |
| M-3327309 | Camshaft | Service part / kit |
| MRS3406E2CAT | Ring Set - 3406E | Service part / kit |
| PA5399 | JACKET WATER HEATER | Service part / kit |
| PEHP3036 | Cat Reman Short and Long Blocks | Service part / kit |
| PEHP3036-01 | Cat Reman Short and Long Blocks | Service part / kit |
| SHA0048 | SHAFT | Service part / kit |
| 135-4925 | Water pump | Pump |
| 1354925CAT | New Water Pump - 3406E | Pump |
| 137-1339 | Water pump | Pump |
| 161-4111 | Oil pump | Pump |
| 161-4113 | Oil pump | Pump |
| 1615719CAT | New Water Pump - fits 3406E & C15 | Pump |
| 1U-5718 | Vacuum Pump | Pump |
| 352-0211 | Water pump | Pump |
| 384-8611 | Lift/transfer pump | Pump |
| 384-8612 | Lift/transfer pump | Pump |
| 703613 | PUMP ASSY | Pump |
| DM-6I3890 | WATER PUMP 3406E | Pump |
| JPR-CT3412 | PUMP ASSY | Pump |
| M-1052508 | 1 Fuel Priming Pump | Pump |
| M-1354925 | Water Pump | Pump |
| M-1375541 | 1 Fuel Priming Pump Tall | Pump |
| M-1614113 | Oil Pump | Pump |
| M-1615719 | Water Pump | Pump |
| M-3848611 | Pump - Transfer | Pump |
| M-4N733 | Oil Pump | Pump |
| RW6012XM1DRMAN | Reman Water Pump - 3406E | Pump |
| RW6014XM1DRMAN | Reman Water Pump - Cat 3406E Straight Teeth | Pump |
| 142-5867 | Front seal | Seal |
| 142-5868 | Rear seal | Seal |
| 1422329CAT | Drainback Seal - 3406E | Seal |
| 4W3864 | Water pump seal | Seal |
| 5N2902 | OIL SEAL | Seal |
| 5N6055 | M-SEAL | Seal |
| JMK0002 | SEAL KIT | Seal |
| M-1425867 | Front Crankshaft Seal | Seal |
| M-1425868 | Rear Crankshaft Seal | Seal |
| M-1632478 | 6 6 Valve Stem Seal - Exhaust | Seal |
| M-2274239ORK | Injector Sleeve O-Ring Kit | Seal |
| M-2287094 | Nose O-ring | Seal |
| M-2481394 | Injector O-Ring Kit | Seal |
| M-3S9643 | 1 Regulator Seal | Seal |
| M-5S2106 | Fan Hub Seal | Seal |
| M-7F2122 | Fan Hub O-Ring Seal | Seal |
| MCSSET0009 | M-SEAL | Seal |
| RET0020 | OIL SEAL | Seal |
| 1113794 | COOLANT LEVEL SENSOR | Sensor |
| 3N7442 | LOW WATER TEMPERATURE SWITCH | Sensor |
| 4P-7610 | Magnetic Pickup Group (engine speed/timing sensor in flywheel housing) | Sensor |
| 9G8010 | Switch | Sensor |
| M-1946722 | Sensor - Pressure | Sensor |
| M-1946724 | Sensor - Pressure | Sensor |
| M-1946725 | Sensor - Pressure | Sensor |
| M-2244536 | Sensor - Pressure | Sensor |
| M-2566453 | Sensor - Temperature | Sensor |
| M-2644297 | Sensor - Temperature | Sensor |
| M-2842728 | Sensor - Pressure | Sensor |
| 4N1061 | ELECTRIC STARTING MOTOR LH 24V | Starter |
| 247-7133 | Thermostat | Thermostat |
| 248-5513 | Thermostat | Thermostat |
| M-4W4011 | Regulator - 170° | Thermostat |
| 16CM43-0006 | Turbocharger Assembly | Turbocharger |
| 7C7691 | Turbocharger | Turbocharger |
| PEHP7069-01 | Reman Water Pump | Water pump |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
Leads compiled from supplier catalogs across the family’s variants; verify the exact part for your variant and serial number.