The Caterpillar 3126B DITA ATAAC VHP is a 7.2 L 6-cylinder engine rated at 2000 rpm, producing up to 115 kW. It powers generator sets from Caterpillar, including the 135. It holds 29.5 L (7.8 gal) of oil and 40 L (10.6 gal) of coolant.
Also known as: Cat 3126B DITA ATAAC VHP
Part of the Caterpillar 3126B engine family — 3 variants share parts & fitment.
| Oil capacity | 29.5 L |
|---|---|
| Coolant capacity | 40.0 L |
| Displacement | 7.2 L |
| Cylinders | 6 |
| Rated speed | 2000 rpm |
| Gross power | 115 kW |
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Air cleaner with dry type radial seal, service indicator, automatic dust ejector | 01768-AAA-000 | Amazon eBay | ||
| Belt | Serpentine belt, automatic tensioner | 06789-AAA-000 | Amazon eBay |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Part # | Description | Category |
|---|---|---|
| 01768-AAA-000 | Air cleaner with dry type radial seal, service indicator, automatic dust ejector | Air filter |
| 06789-AAA-000 | Serpentine belt, automatic tensioner | Belt |
| 2100-5789 | Remote Grease Fitting | Belt |
| 03678-AAA-000 | Parking brake - multi-disc, sealed and oil cooled | Brake |
| 111-2369 | Maintenance Element | Coolant filter |
| 111-2370 | SCA Spin-on Element (22 to 30 L / 6 to 8 US gal cooling system) | Coolant filter |
| 111-2371 | SCA Spin-on Element (65 to 83 L / 18 to 22 US gal and 115 to 163 L / 31 to 43 US gal cooling systems) | Coolant filter |
| 173-5325 | Coolant Conditioner Filter | Coolant filter |
| 173-5326 | Filter Kit (Antifreeze) | Coolant filter |
| 9N-3368 | SCA Spin-on Element (50 to 64 L / 14 to 17 US gal cooling system) | Coolant filter |
| 9N-3718 | SCA Spin-on Element (84 to 114 L / 23 to 30 US gal and 164 to 242 L / 44 to 64 US gal cooling systems) | Coolant filter |
| 03459-AAA-000 | Demand fan | Fan |
| 101-2844 | 1 gallon (3.8L) | Fluid |
| 111-2372 | Caterpillar Liquid SCA - 0.36 L (12 oz) | Fluid |
| 119-5152 | Cat Engine Oil (quart bottle) | Fluid |
| 1U-5490 | Hydrosolv 4165 liquid cleaner, 19 L (5 US gallon) | Fluid |
| 1U-5492 | Hydrosolv 100 Liquid Cleaner, 19 L (5 US gal) | Fluid |
| 1U-8804 | Hydrosolv 100 Liquid Cleaner, 4 L (1 US gal) | Fluid |
| 1U-8812 | Hydrosolv 4165 Liquid Cleaner, 4 L (1 US gal) | Fluid |
| 256-4968 | Cat Diesel Fuel Conditioner | Fluid |
| 3E9709 | Cat DEO SAE 10W30 engine oil (5 gallon) | Fluid |
| 3E9713 | Cat DEO SAE 15W40 engine oil (5 gallon) | Fluid |
| 3E9714 | Cat DEO SAE 15W40 engine oil (1 gallon) | Fluid |
| 3E9904 | Cat DEO SAE 10W30 engine oil (1 gallon) | Fluid |
| 3P-2044 | Caterpillar Liquid SCA - 0.94 L (32 oz) | Fluid |
| 5N-5561 | Silicone Lubricant | Fluid |
| 5P-2907 | Caterpillar Liquid SCA - 208 L (55 US gal) | Fluid |
| 6V-3542 | Liquid Conditioner for Antifreeze | Fluid |
| 8C-3680 | Caterpillar Liquid SCA - 19 L (5 US gal) | Fluid |
| 8T-1589 | Caterpillar Liquid SCA - 0.47 L (16 oz) | Fluid |
| 8T-5571 | Hydrosolv 100 - 208 L (55 US gallon) | Fluid |
| 8T-7570 | Hydrosolv 4165 - 208 L (55 US gallon) | Fluid |
| 175-2949 | Filter Group with Water Separator | Fuel filter |
| 198-6378 | Primary Fuel Filter w/Water Separator (single filter system) | Fuel filter |
| 1R0751 | Fuel Filter (secondary) | Fuel filter |
| PG219CS | Gasket Set, Conversion Set | Gasket |
| 175-7546 | Oil Filter Cutter | Oil filter |
| 1R1807 | Oil Filter - Advanced Efficiency | Oil filter |
| 04567-AAA-000 | Pre-screener | Service part / kit |
| 169-8373 | Fluid Sampling Bottle | Service part / kit |
| 172-8851 | Test Kit for ELC | Service part / kit |
| 174-6854 | Hydrosolv 100 liquid cleaner, 19 L (5 US gallon) | Service part / kit |
| 1U-7297 | Coolant/Battery Tester (Degree Fahrenheit) | Service part / kit |
| 1U-7298 | Coolant/Battery Tester (C) | Service part / kit |
| 1U-8760 | Chain Wrench | Service part / kit |
| 2133193 | Connecting rod | 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 |
| 8T-5296 | Coolant Conditioner Test Kit | Service part / kit |
| 8T5296 | Test Kit for Antifreeze | Service part / kit |
| AEHQ5541-02 | 953C Track Loader | Service part / kit |
| AEHQ5589 | Heavy-Duty Hinged Radiator Grille | Service part / kit |
| LG230 | Home Maintenance Kit | Service part / kit |
| PEHJ0047-01 | Sleeve Metering Fuel System | Service part / kit |
| 05678-AAA-000 | Priming pump, fuel | Pump |
| 1U-5718 | Vacuum Pump | Pump |
| 9S-8140 | Pressurizing Pump | Pump |
| M-1282050 | Pump Group - Fuel | Pump |
| 2100-4369 | Radiator | Radiator |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
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 3126B DITA ATAAC VHP engine has an oil capacity of 29.5 liters.
The Caterpillar 3126B DITA ATAAC VHP has a displacement of 7.2 liters with 6 cylinders.
The Caterpillar 3126B DITA ATAAC VHP powers 1 generator set(s), including Caterpillar 135.