Caterpillar 313-7770 Fuel Transfer Pump
Specifications
| Part Type | Engine-mounted gear-type fuel transfer pump | |
|---|---|---|
| Function | Draws fuel from the tank and delivers it under low pressure to the fuel filters and injection system | |
| Primary Engine Family | Caterpillar 3500 series (3508 / 3512 / 3516 and their B/C/E variants) | |
| Marine Engine Applications | 3508, 3508B, 3508C, 3512, 3512B, 3512C, 3516, 3516B, 3516C marine engines | |
| Cross-Application Use | Also fitted to 3500-series generator set, industrial, and locomotive engines and 5130B/5230 mining excavators | |
| Compressed Part Number | 3137770 (Caterpillar dashless format) |
Technical notes
The 313-7770 is a Caterpillar gear-type fuel transfer pump used across the 3500-series engine platform. On the 3512B marine engine it supplies the low-pressure transfer stage, pulling fuel from the supply line and pushing it through the secondary filters to the injection system at the pressure needed for stable supply under load. Distributor listings show the same pump shared across diesel 3508/3512/3516 variants in marine, generator set, industrial and locomotive duty, which makes it a common service-and-stock item for 3512B operators. It is a wear item driven off the engine; verify the engine serial-number application before ordering since the 3500 family spans several arrangement numbers. Note this part is for compression-ignition diesel engines, not the spark-ignited G3500 gas variants.
Compliance
Caterpillar genuine and aftermarket-equivalent fuel transfer pump; confirm exact fitment against the target engine serial number and arrangement before installation as no regulatory or class certification is implied by these distributor listings.
Compatibility
Other parts in this series
- Caterpillar 107-7330 Connecting Rod Bearing (STD) Pair
- Caterpillar 10R-5664 Remanufactured Lube Oil Cooler
- Caterpillar 123-8206 Cylinder Liner
- Caterpillar 127-5410 Camshaft
- Caterpillar 130-2608 Exhaust Valve Seat Insert
- Caterpillar 144-5695 Piston Ring (Intermediate / Compression)
- Caterpillar 149-6031 Main Bearing (Standard)
- Caterpillar 194-4897 Exhaust Valve
- Caterpillar 197-6995 Valve Guide
- Caterpillar 20R-1264 Remanufactured Electronic Fuel Injector
- Caterpillar 210-2529 Cylinder Head Exhaust Valve
- Caterpillar 211-7826 Cylinder Liner
- Caterpillar 212-8176 Water Pump
- Caterpillar 212-8177 Jacket Water (Fresh Water) Pump
- Caterpillar 242-5328 Cylinder Head (Bare)
- Caterpillar 282-8217 Aftercooler Core
- Caterpillar 299-5204 Piston Assembly
- Caterpillar 3512B Electronic Unit Injector (EUI)
- Caterpillar 3512B Naval Fuel Control Unit (ECCN 8A609)
- Caterpillar 3512B Turbocharger Cartridge
- Caterpillar 355-0769 Cylinder Head Gasket Set
- Caterpillar 468-8824 Intake Valve (Inlet Valve)
- Caterpillar 4W-4980 Oil Cooler Core
- Caterpillar 528-8365 Turbocharger Group
- Caterpillar 7C3614 Sea Water Pump
- Caterpillar 7N-2048 Camshaft Bearing
- Caterpillar 7N-3433 Rocker Arm Assembly
- Caterpillar 7W-5455 Bar Type Aftercooler Core
- Caterpillar 7W-6722 Governor / Speed Actuator Assembly
- Caterpillar 8N-2001 Oil Filter Base Assembly
Related
●RFQ answered within ~4 h at major hubs routed to vetted suppliers no public pricing
Frequently asked questions
- Does Caterpillar part 313-7770 fit the 3512B marine engine?
- Yes. Independent distributor listings confirm 313-7770 as a fuel transfer pump for Caterpillar 3508/3512/3516 engines, and the marine-engine application list explicitly includes the 3512B.
- What does the 313-7770 fuel transfer pump do?
- It is the low-pressure transfer pump that draws fuel from the tank/supply line and delivers it through the fuel filters to the engine's injection system.
- Is this pump used on other engines besides the 3512B?
- Yes. Distributors list it across the 3500-series diesel platform — 3508, 3512 and 3516 variants — in marine, generator set, industrial and locomotive applications, plus 5130B/5230 mining excavators.
- Will the 313-7770 fit a G3512 gas engine?
- No. The corroborated applications are compression-ignition diesel 3500-series engines; the spark-ignited G3500-series gas variants are not listed and should not be assumed compatible.
Caterpillar 313-7770 Fuel Transfer Pump
No public pricing — quoted per request