Auxiliary Pumps
Contact UsDK Turbines supplies reliable aircraft pumps for a wide range of commercial and business aircraft. We carry primary and auxiliary pump components necessary to support fuel systems, cooling systems, and hydraulic operations in the engine bay. Each part we sell is sourced from trusted aviation suppliers and inspected for service-ready condition.
Whether your aircraft needs a replacement fuel pump, a water pump, or an auxiliary pump to prevent pressure drop or vapor lock, DK Turbines provides critical components you can depend on.
What Is an Auxiliary Pump?
An auxiliary pump is a secondary unit that supports or backs up a primary pump in aircraft systems. In many cases, it ensures proper flow rate, system pressure, or cooling during specific conditions—such as engine startup, low power demand, or component transition.
Common examples include the auxiliary fuel pump used to prime engines, or hydraulic auxiliary pumps that support flight control systems during takeoff or idle. In cooling systems, auxiliary pumps help maintain even coolant distribution across the engine bay, improving thermal regulation and system lifespan.
While not always active, auxiliary pumps are crucial. Without them, a sudden pressure drop or vapor lock could cause system malfunction or shutdown.
When the Primary Fails, the Auxiliary Steps In
In flight, system failures rarely come with a warning. If a primary pump loses pressure mid-operation—whether due to wear, contamination, or electrical fault—the auxiliary pump activates to keep flow continuous and prevent system interruption. A failed primary fuel pump without auxiliary support can lead to sudden fuel starvation.
In hydraulic systems, the absence of backup pressure can impact gear deployment or flight control response. Auxiliary pumps are designed for these moments. They don’t replace regular maintenance, but they give the system a vital second line of support when it’s needed most.
Why Aircraft Pumps Matter
Aircraft pumps handle essential system operations. Fuel pumps, hydraulic pumps, and water pumps keep key systems running during high-load and variable-pressure conditions. If a pump fails—or if a system lacks adequate auxiliary support—aircraft performance can suffer.
Auxiliary fuel pumps stabilize flow during rapid throttle changes. Cooling system pumps prevent overheating. Hydraulic boost pumps support low-pressure startup. Each type plays a role in maintaining aircraft safety and operational efficiency.
At DK Turbines, we supply only aircraft pump components proven to perform under operating conditions.
Our Trusted Suppliers
All our inventory follows aviation standards for quality, traceability, and performance. We source both OEM and PMA parts depending on availability and client requirements.
- General Electric (GE)
- Honeywell
- Beechcraft
- Cessna Citation
- Cessna Caravan
- Bombardier Challenger
- Bombardier CRJ
- Dassault Falcon
- Hawker
DK Turbines works with established suppliers to provide aircraft pump components across multiple platforms. We carry inventory compatible with:
DK Turbines works with established suppliers to provide aircraft pump components across multiple platforms. We carry inventory compatible with:
Use the DK Turbines Parts Search Tool
Use DK Turbines’ parts search tool to quickly locate the pump or part you need. You can check availability by entering a part number, aircraft type, or component name.
Our database is updated frequently to reflect current inventory and sourcing timelines. If you’re unsure what you need, our team can help you identify the correct auxiliary pump, water pump, or fuel system component based on aircraft model and system function.
The search tool simplifies procurement—saving you time and helping reduce aircraft downtime.