Comet ZWD 4040 - WashMart

Comet ZWD 4040 Pressure Washer Pump

Regular price$350.00
Shipping calculated at checkout.

  • In stock, ready to ship
  • Inventory on the way

Comet ZWD 4040 4000 PSI @ 4 GPM, 3400 RPM Triplex Pressure Washer Pump


  • Brass Head
  • Built-In Unloader Valve
  • Increased Fin Depth Increases Surface Area to Maximize Heat Dissipation
  • Stainless Steel Unitized Check Valves
  • Heat-Resistant Solid Ceramic Plungers Operating on Lubricated Packings
  • Reinforced Crankcase for Increased Load Capacity
  • Enlarged Crankcase Increases Oil Capacity for Better Lubrication and Lower Operating Temperatures
  • One-Piece Industrial-Grade Oversized Bronze Connecting Rods

Product Specs

  • 1" Hollow Shaft - Gas Engines
  • 3400 RPM
  • 1/2" FNPT Inlet
  • 3/8" MNPT Outlet
  • 14 fl oz Oil Capacity

This is one of the most popular direct drive pumps in the market.

The Comet ZWD 4040 runs will with a Honda GX390, Kohler CH440 or Predator 420CC engine.

ZWD Pump Manual

ZWD Pump Breakdown

Comet Pump Service Manual

Our goal is to ship within 1-2 business days. Shipping can vary depending on availability. For rush delivery, liftgate services and international shipping, please contact sales to ensure stock and shipping rates. Free shipping applies to lower 48 only. 

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

No reviews



Awesome customer service! The best I’ve ever received, and quite frankly, even better than Chick-fil-A

Amber, Marco and the whole team is very helpful when choosing any equipment! Love the team, love the products and the prices are very fair!

Will be doing business with them fully for all years to come!

Jesus D.
BlueJay Pressure Washing

Great response time and customer service. Marco and Fred have great service to go with their great products!

Jim B.

The best customer service I have seen in the industry, actually the best I have seen in general. They have defintely earned a customer for life and I will be throwing their name out every chance I get. Amber was great at responding and getting everything handled quickly, small delivery issue but it was almost non existent with how well and swift she handled it. Marco was quick to answer her and help her handle the situation so the teamwork and communication was great within the company. What more can you ask for?

Angel V.

Amazing customer service! I bought the WashMart Injector and I am highly highly pleased. I didn't even have to use my 12v for any stucco or brick, the WashMart Injector is amazing!! I am pretty sure it could even clean a shingle roof. Highly highly recommend!

Hunter P.

Recently viewed