Image unavailable Alfa Marine Spare Parts is an independent supplier and is not an authorized Caterpillar dealer. Caterpillar names and part numbers are used for identification purposes only.
Product image not available
Request a quote for this part.
Caterpillar Marine Parts
Caterpillar PUMP GP AUX 421-8547 | 524-3160 | 20R-1686
Availability: 2-7 days
Shipping: Worldwide
Price
On Request
Quote reference: Part No. 421-8547 | 20R-1686
Need help identifying this part?Caterpillar PUMP GP AUX 421-8547 | 20R-1686
Product Details
Part Number
421-8547 | 20R-1686
Description
Caterpillar PUMP GP AUX 421-8547 | 20R-1686
Brand
Caterpillar
Category
WATER PUMP
Availability
2-7 days
Shipping
Worldwide
Price
On Request
Product Description
Caterpillar Engine pump 421-8547 | 20R-1686
1. Product Overview
Caterpillar Engine pump 421-8547 | 20R-1686 is listed under source title “Caterpillar PUMP GP AUX 421-8547 | 524-3160 | 20R-1686”. It is classified for Batch 3 as engine pump within the fluid circulation or pressure supply system. The source record does not establish an exact engine model. Confirm the complete engine model, serial number, arrangement, and installed reference before ordering.
2. Function and Operating Principle
An engine pump moves or pressurizes a working fluid such as fuel, lubricating oil, coolant, seawater, or hydraulic fluid. The exact duty cannot be assumed from the part number alone and must be established from the engine system and catalog position.
A driven pumping element creates flow by changing the volume or velocity of the fluid path. Pump capacity, rotation, port arrangement, seals, and drive interface must match the intended circuit.
3. Application Status
| Manufacturer / brand | Caterpillar |
|---|---|
| Part number | 421-8547 | 20R-1686 |
| Component category | Engine pump |
| System | Fluid circulation or pressure supply |
| Evidence level | C — Component identity only |
| Engine application | Not established by the supplied record |
4. Typical Signs That Inspection May Be Required
| Observation | Possible significance |
|---|---|
| Low system pressure or flow | May involve the pump, restriction, leakage, drive condition, or fluid level. |
| Fluid leakage at the housing or shaft | Requires inspection of seals, connections, alignment, and internal condition. |
| Abnormal noise or temperature | Can be associated with aeration, cavitation, bearing wear, restriction, or incorrect fluid. |
| Repeated loss of prime | May indicate suction leakage, drain-back, restriction, or pump wear. |
These observations are inspection triggers rather than a confirmed diagnosis. Evaluate the complete engine system and follow the applicable manufacturer service information.
5. Inspection and Replacement Guidance
- Identify the fluid system before selecting a replacement.
- Inspect drive components, ports, hoses, seals, and mounting surfaces.
- Check system restriction and fluid condition before condemning the pump.
- Confirm rotation, displacement or capacity, and engine serial-number applicability.
6. Information Required Before Ordering
- Complete engine or equipment model.
- Engine serial number and arrangement or configuration number.
- Installed part reference and clear photographs of the identification label.
- Installation position and related assembly information.
Compatibility notice: Verify 421-8547 | 20R-1686 against serial-number-specific parts documentation before purchase or installation. Do not select the component by appearance or part-number similarity alone.
