The Caterpillar 3406C TA is a 14.64 L 6-cylinder ataac engine rated at 1500 rpm, producing up to 245 kW. It powers generator sets from Caterpillar, including the AUXILIAR and DM7525. It holds 38 L (10.0 gal) of oil and 20.8 L (5.5 gal) of coolant.
Also known as: CAT 3406C TA
Part of the Caterpillar 3406C engine family — 3 variants share parts & fitment.
The cheapest captured merchant offer per filter — see the full cross-reference below for every OEM/aftermarket option.
Prices captured from merchant listings; some links are affiliate links. Verify against your serial number before ordering.
| Oil capacity | 38.0 L |
|---|---|
| Coolant capacity | 20.8 L |
| Displacement | 14.64 L |
| Cylinders | 6 |
| Aspiration | ATAAC |
| Rated speed | 1500 rpm |
| Gross power | 245 kW |
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | — | ||||
| Oil filter | — | ||||
| Battery | — | ||||
| Belt | — | ||||
| Coolant | 20.8 L | — | |||
| Oil | 38.0 L | — | |||
| Spark plug | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Coolant | SCAC cooling / jacket water | Generator temperature rise based on a 40 degree C ambient per NEMA MG1-32. | |||
| Engine oil | Lubricating oil | 675.0 L | Sump refill with filter; integral lube oil cooler, gear type lube oil pump | ||
| Fuel | 35 API gravity | LHV of 42 780 kJ/kg (18,390 Btu/lb) at 29 C (85 F), weighing 838.9 g/liter (7.001 lbs/U.S. gal.) | |||
| Fuel | No. 2 diesel fuel, 35º API gravity | LHV 42 780 kJ/kg (18,390 Btu/lb) | Weighing 838.9 g/liter (7.001 lbs/U.S. gal.), used at 29º C (85º F). Consult Cat dealer for Low Sulfur fuel and Biodiesel capability. |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Part # | Description | Category |
|---|---|---|
| 1206-011 | Remove Accessory Drive | Accessory drive |
| 1206-012 | Install Accessory Drive | Accessory drive |
| 1206-015 | Disassemble Accessory Drive | Accessory drive |
| 1206-016 | Assemble Accessory Drive | Accessory drive |
| 1051-010 | Air Cleaner | Air cleaner |
| 102-9720 | Cleaning Kit (detergent and oil for AIRSEP air cleaner elements) | Air filter |
| 1W7411 | CLEANER GP-AIR(D)(HEAVY DUTY) | Air filter |
| 4N0015 | Air filter outer | Air filter |
| 6I2504 | Air filter inner | Air filter |
| 8N9759 | MOUNTING GP - AIR CLEANER | Air filter |
| 50-amp | Alternator | Alternator |
| 6N9294 | CHARGING ALTERNATOR 24V 35 AMP | Alternator |
| 118-2018 | V-belt | Belt |
| 164-4599 | V-belt | Belt |
| 1W4878 | BELT GUARD - ALTERNATOR PULLEY | Belt |
| 4N6302 | V-belt | Belt |
| 6N6798 | V-belt | Belt |
| W200-1002 | Buffer Seal | Buffer seal |
| 9N3368 | Coolant Conditioner Element | Coolant filter |
| W200-1001 | Cylinder Rod Seal - Wiper Seal | Cylinder rod seal |
| 1326-010 | Dipstick Assembly | Dipstick assembly |
| 1453-010 | Electric Starting Motor | Electric starting motor |
| 1122-010 | Engine Lifting Brackets | Engine lifting bracket |
| 1154-010 | Engine Front & Rear Support | Engine support |
| 1R-0755 | High Efficiency Fuel Filter | Filter |
| 4C4611 | Cooling System Cleaner, Fast Acting-Type, 3.8 L (1 U.S. gal) container | Fluid |
| 6V4511 | Cooling System Cleaner, Standard-Type, 1.9 L (1/2 U.S. gal) container | Fluid |
| ON5561 | Silicone Lubricant for battery cable clamps and terminals | Fluid |
| 1262-010 | Fuel Filter Base | Fuel filter |
| 1R-0749 | Fuel Secondary - ADV | Fuel filter |
| 1R-0750 | High Efficiency Fuel Filter | Fuel filter |
| 1R-0751 | High Efficiency Fuel Filter | Fuel filter |
| 1R-0756 | High Efficiency Fuel Filter | Fuel filter |
| 1R-0766 | High Efficiency Fuel Filter | Fuel filter |
| 326-1642 | Filter water separator | Fuel filter |
| 326-1643 | Filter water separator | Fuel filter |
| 3S3875 | Filter fuel | Fuel filter |
| 9N3717 | Filter water separator | Fuel filter |
| 1288-011 | Remove Fuel Injection Pump & Governor Drive | Fuel injection pump governor drive |
| 1288-012 | Install Fuel Injection Pump & Governor Drive | Fuel injection pump governor drive |
| 1258-010 | Fuel Priming Pump | Fuel priming pump |
| 1256-010 | Remove & Install Fuel Transfer Pump | Fuel transfer pump |
| 1256-015 | Disassemble Fuel Transfer Pump | Fuel transfer pump |
| 1256-016 | Assemble Fuel Transfer Pump | Fuel transfer pump |
| 1282922CAT | Water Pump Gasket Set - 0.4 lbs/ 0.18 kgs, 5" Length, 27mm Width, 27mm Depth, 11 Application: 3400 | Gasket |
| 13373 | Gasket, lens oval | Gasket |
| 1555619CAT | Flywheel Housing Gasket - 3406 | Gasket |
| 1609874CAT | Single Cylinder Liner Gasket Set - 3406/ 3412 0.1 lbs/ 0.04 kgs | Gasket |
| 2161252CAT | Single Cylinder Head Gasket Set - 3406/ 3406E | Gasket |
| 3N4861 | GASKET | Gasket |
| 4N1151 | Gasket oil pan | Gasket |
| 6I3066 | Gasket cylinder head | Gasket |
| B89846P2 | Gasket and cover (9) | Gasket |
| DM-3E3322 | GASKET SET, FUEL SYSTEM 3406 | Gasket |
| DM-3E7474 | GASKET SET, FUEL SYSTEM 3406 | Gasket |
| DM-3E7485 | GASKET SET, FUEL SYSTEM 3406 | Gasket |
| DM-3E7495 | GASKET SET, FUEL SYSTEM 3406 | Gasket |
| DM-6I3066 | GASKET, CYL. HD. 3406 | Gasket |
| DM-8C4452 | GASKET SET, FUEL SYSTEM 3406 | Gasket |
| DM-8C6538 | GASKET SET, FUEL SYSTEM 3406 | Gasket |
| DM-8C6772 | GASKET SET, FUEL SYSTEM 3406 | Gasket |
| DM-8C8490 | GASKET SET, FUEL SYSTEM 3406 | Gasket |
| DM-8C8764 | GASKET SET, FUEL SYSTEM 3406 | Gasket |
| M-1282922 | Water Pump Mounting Gasket | Gasket |
| M-1609874 | Gasket Set - Cylinder Liner Packing | Gasket |
| M-1P436 | 1 Fuel Priming Pump Gasket | Gasket |
| M-3639022 | Gasket Set - Front Structure | Gasket |
| M-4N1151 | Oil Pan Gasket | Gasket |
| M-4N1151-6 | Oil Pan Gasket | Gasket |
| M-4N1156 | Gasket | Gasket |
| M-4N7253 | Nozzle Adapter Gasket | Gasket |
| M-5P5678-6 | Valve Cover Gasket | Gasket |
| M-5P5678-9 | Valve Cover Gasket | Gasket |
| M-7C307 | Gasket | Gasket |
| MCB3406031 | Overhaul Gasket Set | Gasket |
| MCB3406032 | In-Chassis Gasket Set | Gasket |
| MCB3406033 | Cylinder Head Set | Gasket |
| 3T8705 | Glow plug | Glow plug |
| 3T8706 | Glow plug | Glow plug |
| 1272-011 | Remove Governor & Fuel Pump Drive | Governor fuel pump drive |
| 1272-012 | Install Governor & Fuel Pump Drive | Governor fuel pump drive |
| 094-4412 | Filter hydraulic | Hydraulic filter |
| W200-1000 | Hydraulic Cylinder Reseal Service Kit | Hydraulic filter |
| 3N4859 | IMPELLER | Impeller |
| 9N2366 | Fuel injector | Injector |
| M-1007551 | Fuel Nozzle - 7000 Series | Injector |
| M-1007556 | Fuel Nozzle - 7000 Series | Injector |
| M-1007557 | Fuel Nozzle - 7000 Series | Injector |
| M-1007558 | Fuel Nozzle - 7000 Series | Injector |
| M-1279792 | Fuel Nozzle - 7000 Series | Injector |
| M-1279793 | Fuel Nozzle - 7000 Series | Injector |
| M-1311243 | Fuel Nozzle - 7000 Series | Injector |
| M-4W7017 | Fuel Nozzle - 7000 Series | Injector |
| M-4W7018 | Fuel Nozzle - 7000 Series | Injector |
| M-4W7022 | Fuel Nozzle - 7000 Series | Injector |
| M-7W7026 | Fuel Nozzle - 7000 Series | Injector |
| M-7W7032 | Fuel Nozzle - 7000 Series | Injector |
| M-7W7037 | Fuel Nozzle - 7000 Series | Injector |
| M-7W7040 | Fuel Nozzle - 7000 Series | Injector |
| M-7W7041 | Fuel Nozzle - 7000 Series | Injector |
| M-7W7042 | Fuel Nozzle - 7000 Series | Injector |
| M-7W7043 | Fuel Nozzle - 7000 Series | Injector |
| M-7W7044 | Fuel Nozzle - 7000 Series | Injector |
| M-9L6884 | Fuel Nozzle - Capsule | Injector |
| M-9N3246 | Fuel Nozzle - Capsule | Injector |
| 102-2828 | Filter oil | Oil filter |
| 1R1808 | Filter oil | Oil filter |
| 9M9740 | Filter oil | Oil filter |
| 0P8708 | POWER PLUS RENTL FINANCE PRGM | Service part / kit |
| 0P9484 | 0P948401JUL98PRC PROPGM641-6 | Service part / kit |
| 102-9721 | Air/Vacuum Limiter Filter Element Cleaning Kit (non-U.S.) | Service part / kit |
| 1031956 | MOUNTING GP - CONTACTOR | Service part / kit |
| 1036101 | CONTROL GP -A | Service part / kit |
| 1037284 | MOUNTING GP - BREAKER | Service part / kit |
| 1047942 | FASTENER GP | Service part / kit |
| 1048615 | BASE GP - FUEL TANK & | Service part / kit |
| 1059710 | LINES GP - OIL DRAIN | Service part / kit |
| 1069931 | LINES GP - DRAIN | Service part / kit |
| 1080723 | HARNESS GP - WIRING | Service part / kit |
| 1095264 | PANEL AR - CONTROL | Service part / kit |
| 1114219 | MOUNTING GP - CONTROL PANEL | Service part / kit |
| 1114421 | ACTUATOR AS - 524 GOVERNOR | Service part / kit |
| 1117534 | MOUNTING GP - ACTUATOR | Service part / kit |
| 1172855 | TRANSFER GP | Service part / kit |
| 1272-015 | Plug (15) | Service part / kit |
| 1309415 | 3406 DITA/XQ350 RENTAL PKG | Service part / kit |
| 1315455 | CONTROL AS | Service part / kit |
| 1315544 | RADIATOR GP | Service part / kit |
| 1N3876 | 3406 DITA ENGINE AR - BASIC | Service part / kit |
| 249-0433 | Oxidation Catalyst Assembly - Round | Service part / kit |
| 256-0326 | Oxidation Catalyst Assembly - Round | Service part / kit |
| 2T8141 | 387 KW @ 1800 RPM (519 BHP) | Service part / kit |
| 2W8198 | SOLENOID SHUTOFF - ETR 24 V | Service part / kit |
| 3N4858 | SHAFT | Service part / kit |
| 3N4860 | CAM LINER | Service part / kit |
| 3N4862 | WEAR PLATE | Service part / kit |
| 4N3093 | BLOWER FAN | Service part / kit |
| 4N6540 | MOUNTING GP-HEATER | Service part / kit |
| 4N9778 | UPPER RADIATOR CONNECTIONS | Service part / kit |
| 4P3359 | COUPLING | Service part / kit |
| 4P6247 | PICK UP GP - MAGNETIC | Service part / kit |
| 4P7610 | PICK UP GP - MAGNETIC | Service part / kit |
| 4P9687 | SR4 GENERATOR AR-POWER (60HZ) | Service part / kit |
| 4W1727 | COVER GP | Service part / kit |
| 4W5828 | AIR INLET HOOD | Service part / kit |
| 5P2506 | LITERATURE GP - ENGLISH | Service part / kit |
| 5P2586 | OIL - BULK - ONE LITER | Service part / kit |
| 6I0371 | ENCLOSURE GP | Service part / kit |
| 6L2927 | DRY ELBOW | Service part / kit |
| 6N8878 | FUEL PRESSURE GAUGE | Service part / kit |
| 6V4876 | Molykote paste | Service part / kit |
| 7E5996 | Connecting rod | Service part / kit |
| 7E6247 | JACKET WATER HEATER | Service part / kit |
| 7N8840 | FAN DRIVE 0.800 RATIO | Service part / kit |
| 7W1340 | MOUNTING GP - ALTERNATOR | Service part / kit |
| 8N1726 | Connecting rod | Service part / kit |
| 9G4231 | BATTERY - 12 VOLT | Service part / kit |
| BER0005 | BEARING | Service part / kit |
| CAMSET0018 | CAM LINER | Service part / kit |
| DZ111166 | (3402) (3404) (3408) (3409) (974G) | Service part / kit |
| JSK002601 | SERVICE KIT | Service part / kit |
| M-2477133 | 1 Regulator - 190ºC | Service part / kit |
| M-2485513 | 1 Regulator - 180ºC | Service part / kit |
| P34605 | Housing Assembly Group Front (distributor body marked FRONT) | Service part / kit |
| P34610 | Housing Assembly Group Rear (distributor body marked REAR) | Service part / kit |
| P34616 | P-36 Basic Kit | Service part / kit |
| P34617 | Electrical Group - Mechanical (Harness P813-CT included) | Service part / kit |
| PEHP3036 | Cat Reman Short and Long Blocks | Service part / kit |
| PEHP3036-01 | Cat Reman Short and Long Blocks | Service part / kit |
| QEHQ9870 | Rear Wheel Assist System | Service part / kit |
| SHA0046 | SHAFT | Service part / kit |
| WER0010 | WEAR PLATE | Service part / kit |
| 108-6633 | Fuel pump | Pump |
| 1313533 | PUMP GP - GOVERNOR | Pump |
| 135-4925 | Water pump | Pump |
| 138-6744 | Water pump repair kit | Pump |
| 161-4111 | Oil pump | Pump |
| 1W1700 | Lift/transfer pump | Pump |
| 384-8612 | Lift/transfer pump | Pump |
| 5N4852 | PUMP ASSY | Pump |
| JPR-CT3406 | PUMP ASSY | Pump |
| M-1052508 | 1 Fuel Priming Pump | Pump |
| M-1354926 | Water Pump | Pump |
| M-1375541 | 1 Fuel Priming Pump Tall | Pump |
| M-1W1700 | Fuel Transfer Pump | Pump |
| M-4N733 | Oil Pump | Pump |
| 1371-011 | Raw Water Pump | Raw water pump |
| 1371-012 | Install Raw Water Pump | Raw water pump |
| 1371-015 | Disassemble Raw Water Pump | Raw water pump |
| 1371-016 | Assemble Raw Water Pump | Raw water pump |
| 142-5867 | Front seal | Seal |
| 142-5868 | Rear seal | Seal |
| 3N4863 | OIL SEAL | Seal |
| 3N5632 | M-SEAL | Seal |
| 4W3864 | Water pump seal | Seal |
| M-1090077 | Seal O-Ring | Seal |
| M-1425867 | Front Crankshaft Seal | Seal |
| M-1425868 | Rear Crankshaft Seal | Seal |
| M-1632478 | 6 6 Valve Stem Seal - Exhaust | Seal |
| M-2S2251 | Nozzle Adapter Seal Ring | Seal |
| M-3S9643 | 1 Regulator Seal | Seal |
| M-5H7153 | Nozzle Adapter Seal Ring | Seal |
| M-5S2106 | Fan Hub Seal | Seal |
| M-7F2122 | Fan Hub O-Ring Seal | Seal |
| M-8M5249 | Nozzle Adapter Seal Ring | Seal |
| MCBKT7000 | Nozzle Seal Kit - 7000 Series | Seal |
| MCSSET0007 | M-SEAL(WITH SNAP-RING) | Seal |
| 7478-010 | Service Meter | Service meter |
| ESD5526 | Speed Controller | Speed controller |
| 4N1062 | ELECTRIC STARTING MOTOR LH 24V | Starter |
| 7462-010 | Tachometer Drive | Tachometer drive |
| 247-7133 | Thermostat | Thermostat |
| 248-5513 | Thermostat | Thermostat |
| M-1209453 | Regulator - 170° | Thermostat |
| 7C7691 | Turbocharger | Turbocharger |
| W200-1003 | U-cup Seal | U cup seal |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
Cross-referenced via Donaldson + OEM/engine-maker interchange — options to verify against your serial number, not confirmed for every exact variant.
Other equipment known to use this engine, via filter-application cross-reference — useful for sourcing parts even when your exact machine isn't listed elsewhere on this page.
The Caterpillar 3406C TA engine has an oil capacity of 38.0 liters.
The Caterpillar 3406C TA has a displacement of 14.64 liters with 6 cylinders.
The Caterpillar 3406C TA powers 3 generator set(s), including Caterpillar 3406C TA, Caterpillar AUXILIAR, Caterpillar DM7525.
The Caterpillar 3406C TA uses oil filter part numbers Caterpillar 3890434, Caterpillar 1W3300, Caterpillar 2P4005.
The Caterpillar 3406C TA uses fuel filter part numbers Caterpillar 3089679, Caterpillar 3I1333, Donaldson P551311.
The Caterpillar 3406C TA uses air filter part numbers Caterpillar 6T0988, Caterpillar 1212760, Caterpillar 612506.