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Comet BXD2528 Pump Assembly – 2.5 GPM, 2,800 PSI, 3/4" Shaft

Comet BXD2528 Pump Assembly – 2.5 GPM, 2,800 PSI, 3/4" Shaft

Specifications

UNLOADER

Built-In

WARRANTY

2 Years

RPM

3,450

PUMP MODEL

Comet BXD2528

PUMP TYPE

Axial

Oil Type

30W Non Detergent

Oil Capacity

4 oz

Max Inlet Temperature

54,5°C / 130°F

Manifold Type

Brass

Soap Injector

Fixed

Discharge Size

Brass QC 3/8" 85.300.103

Inlet Size

3/4" GHF

Plunger Piston

Stainless Steel

Unloader Type

Built-In

Max GPM

2.5

Shaft Size

3/4"

Direct Drive

Gas

Weight

11 lbs

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PRODUCT

DESCRIPTION

Durable Replacement Pump for Gas Pressure Washers

The Comet BXD2528 Pump Assembly is a heavy-duty axial direct-drive gas pump designed to provide reliable cleaning power for residential and light commercial pressure washers. Delivering up to 2,800 PSI at 2.5 GPM, this pump combines stainless steel plungers, a brass manifold, and a built-in unloader for long-lasting durability and consistent performance.

Packaged and ready to install, the BXD2528 is an excellent choice for replacing a worn-out pump, restoring your pressure washer to peak operating power. Backed by Comet’s 2-year warranty, this pump delivers both performance and peace of mind.

Key Features

  • Pump Manufacturer: Comet

  • Pump Model: BXD2528

  • Pump Style: Axial cam, direct-drive gas

  • Max PSI: 2,800

  • Max GPM: 2.5

  • Shaft Size: 3/4"

  • Unloader Type: Built-in

  • Plunger (Piston): Stainless steel for superior durability

  • Inlet Size: 3/4" GHF (garden hose fitting)

  • Discharge Size: Brass QC 3/8" (85.300.103)

  • Soap Injector: Fixed, integrated

  • Manifold Type: Brass for strength and corrosion resistance

  • RPM: 3,450

  • Max Inlet Temp: 54.5°C / 130°F

  • Thermal Relief Valve: N/A

  • Oil Capacity: 4 oz

  • Oil Type: 30W non-detergent oil

  • Weight: 11 lbs

  • Warranty: 2 Years

Engineered for High-Performance Cleaning

The Comet BXD2528 is designed to handle demanding cleaning tasks with ease. Its axial cam direct-drive design ensures efficient power transfer from engine to pump, reducing energy loss and delivering consistent output. With a maximum operating pressure of 2,800 PSI and a flow rate of 2.5 GPM, it offers a strong balance of power and water volume, making it suitable for a wide variety of outdoor cleaning jobs.

The stainless steel plungers resist wear and corrosion, while the brass manifold adds durability and longevity compared to aluminum alternatives. These materials make the BXD2528 an excellent choice for users who need a pump that will stand up to regular use in tough environments.

Built-In Features for Simplicity

The BXD2528 comes with a built-in unloader for automatic pressure regulation. This reduces the need for external components, simplifies installation, and improves pump reliability.

A fixed soap injector is also included, making it easy to add detergents when low-pressure cleaning is required. With detergent capability built in, you can quickly switch between rinsing and applying soap for maximum cleaning efficiency.

The brass quick-connect 3/8” discharge fitting makes hose attachment fast and secure, ensuring a leak-free connection that stands up to frequent use.

Maintenance and Longevity

Routine maintenance of the Comet BXD2528 is simple and straightforward. The pump holds 4 oz of 30W non-detergent oil, which keeps moving parts lubricated and extends pump life. Oil checks and changes are quick and inexpensive, ensuring you get the most out of your investment.

The pump is designed to handle a maximum inlet temperature of 130°F (54.5°C), making it more tolerant of warmer water supplies than many comparable residential pumps. This feature enhances flexibility and provides additional protection for seals and internal components.

Weighing 11 lbs, the BXD2528 is built heavier than many axial pumps, reflecting its rugged construction and extended service life.

Common Applications

The Comet BXD2528 Pump Assembly is versatile and powerful enough to cover a wide range of household and light commercial cleaning jobs. Typical uses include:

  • Driveways and Sidewalks – Remove grime, algae, and oil stains with ease.

  • Decks, Patios, and Fences – Clean wood, stone, and composite surfaces effectively.

  • Vehicles, RVs, and Boats – Wash cars, trucks, trailers, and watercraft safely and efficiently.

  • Home Exteriors – Tackle siding, brick, and stone surfaces with strong water output.

  • Outdoor Furniture and Equipment – Keep grills, furniture, and tools looking like new.

Its compatibility with engines using a 3/4” shaft size makes it a reliable replacement for many residential and consumer-grade gas-powered pressure washers.

Product Specifications

  • Manufacturer: Comet

  • Model: BXD2528

  • Style: Axial cam, direct-drive gas

  • Max Pressure: 2,800 PSI

  • Max Flow Rate: 2.5 GPM

  • Shaft Size: 3/4”

  • RPM: 3,450

  • Unloader: Built-in

  • Soap Injector: Fixed

  • Manifold Material: Brass

  • Plunger Material: Stainless steel

  • Inlet Connection: 3/4” GHF

  • Discharge Connection: Brass QC 3/8" (85.300.103)

  • Oil Capacity: 4 oz (30W non-detergent oil)

  • Max Inlet Temp: 54.5°C / 130°F

  • Thermal Relief Valve: N/A

  • Weight: 11 lbs

  • Warranty: 2 Years

Backed by Comet Quality

Comet has been producing industry-leading pumps for decades, earning a reputation for engineering excellence, innovation, and durability. The BXD2528 Pump Assembly reflects this heritage, offering dependable performance, heavy-duty construction, and user-friendly features designed to maximize efficiency.

Backed by a 2-year warranty, the Comet BXD2528 is built for reliability, giving you confidence that your pressure washer will perform when you need it most.

When it’s time to replace your pump, choose the Comet BXD2528 Pump Assembly—a proven performer engineered for durability, ease of maintenance, and powerful cleaning results.

Frequently Asked Questions about Pressure Washers

How to store a pressure washer?

To ensure the durability of your heavy duty pressure washer:

  • Empty the gas tank to prevent fuel from degrading or clogging the engine.
  • Empty the pump and hoses of any remaining water.
  • Perform necessary maintenance before storage.
  • Store in a dry area.
  • Cover.

What is a pressure washer?

A power washer is a cleaning machine that uses a gasoline engine to power a high pressure water pump and nozzle. It’s used to clean driveways, decks, vehicles, outdoor furniture and more by spraying water at high PSI to remove dirt, grime, mold and other debris.Many models also come with a detergent tank for added cleaning power.

How does a power washer work?

A power washer works by drawing water from a connected hose and pumping it through a high pressure nozzle. The gas engine powers the pump which pressurizes the water and then expels it through the nozzle at high speed to clean the surface. The water pressure is measured in PSI (pounds per square inch) and the flow rate is measured in GPM (gallons per minute).Many models also feature adjustable water pressure settings to cater to different cleaning needs. BE makes pressure washing easy with models available for light jobs and heavy duty commercial cleaning projects.

Gas vs Electric power washers?

The main difference is that a gas pressure washer, known for its cleaning power, is powered by a gasoline engine, making it more powerful and portable, while an electric pressure washer is powered by electricity and is generally quieter and lighter.

Gas pressure washers are for heavy duty and large areas due to their durability, whereas electric pressure washers are for smaller jobs.

Your BE electric pressure washer is perfect for smaller jobs and built for portability, and we offer a wide range of electric models. Included with our electric models is a long extension cord for use anywhere around your house.

What to consider?

When choosing a gas pressure washer consider:

  • Pressure (PSI): More PSI means more cleaning power but also more potential for damaging delicate surfaces.
  • Flow Rate (GPM): More GPM means faster cleaning as more water is dispensed.
  • Engine Power: Bigger engines mean more durability and power.
  • Portability: Weight, handle design and wheel size for easier to move.
  • Nozzles: Multiple spray nozzles to adjust the spray pattern for different tasks.
  • Adjustable Nozzle: Allows for fine-tuning the spray intensity and pattern for various cleaning needs.

How much pressure do I need for?

The required pressure (PSI) and cleaning power depend on the surface you’re cleaning:

  • Light duty (car washing, outdoor furniture): 1,300-1,800 PSI.
  • Medium duty (patios, fences, decks): 2,000-3,000 PSI.
  • Heavy duty (driveways, brick walls, large equipment): 3,000+ PSI.

Many pressure washers come with adjustable pressure settings to handle different cleaning tasks effectively.

Can a pressure washing damage surfaces?

Yes, a power washer can damage surfaces if used incorrectly. High pressure water can strip paint, dent soft surfaces or even cause structural damage if the pressure is too high or the nozzle is held too close to the surface. Always use the right PSI for the material you’re cleaning and keep a safe distance from delicate surfaces.

To prevent damage, consider using a model with adjustable pressure settings.

How to maintain your pressure washer?

To ensure the durability and smooth operation of a pressure washer:

  • Change the oil as per manufacturer’s instructions.
  • Clean or replace the air filter to ensure good airflow.
  • Inspect and clean the nozzle regularly to prevent clogs.
  • Drain the gas tank if you’re storing the washer for a long time.
  • Check the hoses for leaks or damage and replace them if needed.
  • Follow regular maintenance requirements to keep the washer in optimal condition.

Can I use a pressure washer in cold weather and low water temperature?

You can use a pressure washer in cold weather but it’s more difficult. The water flow rate in the hoses and pump can freeze and damage the equipment. If you plan to use your pressure washer in cold temperatures make sure to winterize it and store it in a warm area when not in use. You can also use anti-freeze solutions for pressure washers.

Some models are designed to use hot water, which can be particularly effective for cleaning in cold weather.

Do I need any accessories?

Common accessories for power washers: