Westinghouse Pressure Washer Replacement Parts The Complete Sourcing Guide

Westinghouse Pressure Washer Replacement Parts: The Complete Sourcing Guide

Westinghouse pressure washers earn their place with strong value and a generous three-year residential warranty, but like any machine they eventually need a new gun, wand, hose, or nozzle. The good news is that Westinghouse pressure washer replacement parts are easy to source, because the brand publishes complete replacement parts lists for every model and sells the components directly. This guide walks through the lineup, the parts that fail, how to read the parts list, where to buy, and how to keep a Westinghouse washer running for years.

The Westinghouse Lineup

Westinghouse sells two families, and the model number tells you which you have.

Gas models use a Westinghouse 4-stroke OHV engine, often 212cc, paired with a three-piston axial cam pump and a 25-foot M22 quick connect hose. Electric models use an AC motor and an axial cam pump with a Total Stop System and a long GFCI cord. Both families share the same M22 quick connect hose fittings and standard 1/4 inch nozzle fittings, which is why so many accessories and parts interchange across models and brands. Knowing your family and model number is the first step to ordering the right part. For a deeper maintenance walkthrough, our guide on a Westinghouse parts and maintenance is a good companion.

Parts That Fail Most Often

• Spray gun: leaks and trigger failure, the top replacement.
• Lance and wand: bent, clogged, or damaged.
• High pressure hose: kinks, abrasion, and worn ends.
• Nozzle kit: clogged or worn tips and seals.
• Inlet filter and screens: clogged with grit.
• Turbo nozzle: wears out with heavy flat work.
• Wheels and handle: physical and impact damage.
• Pump: the big-ticket part, often months to years in.

The failure order on a Westinghouse washer is predictable. The spray gun goes first, leaking at its o rings or losing trigger function, followed by the lance, which bends or clogs. The high pressure hose kinks and abrades, nozzle tips wear and clog, and the inlet filter and screens load with grit if they are not flushed. A turbo nozzle wears out faster because it does the hardest work, and wheels and handles take the physical abuse. The pump is the expensive part and usually lasts longest if the machine is maintained. This pattern tells you which spares to keep on hand. For the gun and wand end, our guide on a wand repair kit is useful.

How to Read the Parts List

1. Find the model number on the machine or in the manual.
2. Download the RPL for that exact model.
3. Match the index number on the diagram to the part.
4. Note the description and part number.
5. Check the supersession for replaced part numbers.
6. Order by part number from Westinghouse or a retailer.

The Replacement Parts List is your map. Each model has its own RPL with an index number keyed to an exploded diagram, a description, and a part number. Find your model on the machine or in the manual, pull the correct RPL, and match the index number to the part that failed. Watch for supersessions, where an original number is replaced by a newer one, so you order the currently available part. Then order by part number from Westinghouse or a retailer. This method removes guesswork and prevents wrong purchases. For the fitting details behind the parts, our guide on quick connect o rings helps.

Where to Buy Westinghouse Parts

• Westinghouse directly: the brand site and parts portal.
• Official parts site: original components by model.
• Retailers: Amazon, Lowe’s, Home Depot, Walmart.
• Customer service: help finding a part by phone.
• Generic parts: standard guns, hoses, and nozzles.
• Warranty service: free repair within the coverage period.

Westinghouse parts come from several paths. The brand’s own site at westinghouse.com sells parts and accessories, and the official Westinghouse Power Equipment parts portal lets you search by product type, model, and part type for original components. Major retailers and marketplaces stock common parts, and Westinghouse customer service can help you find a specific item. For wear items that cross-reference to standard components, generic guns, hoses, and nozzles work fine as long as the fit and ratings are right. If the machine is still under the three-year residential warranty, warranty service covers covered repairs. For the cross-reference approach in another brand, our guide on Snap-on pressure washer parts is a good parallel.

Gas Model Parts: Engine and Pump

• Engine: Westinghouse 4-stroke OHV, often 212cc.
• Carburetor: the common fuel-related replacement.
• Air filter and spark plug: cheap, regular maintenance.
• Pump: three-piston axial cam with an aluminum head.
• Easy-Start valve: aids starting on some models.
• Recoil starter: replaced when the pull start fails.

On gas WPX models, the engine and pump parts mirror any small engine. The carburetor is the most frequent fuel-related replacement, especially after ethanol fuel sits in the machine, and air filters and spark plugs are cheap, regular service items. The pump is a three-piston axial cam unit with an aluminum head and an Easy-Start valve on some models, and the recoil starter is replaced when the pull cord fails. Because these are standard small-engine and pump components, parts are widely available. Understanding the gas side helps you decide whether a repair is worth it. For the pump upkeep, our guide on pump oil is useful.

Electric Model Parts

• GFCI cord: replace if it will not reset or is damaged.
• Power switch: a common failure point on electric units.
• Motor pump assembly: the core of an electric washer.
• Total Stop System: the auto start-stop function.
• Power cord retainer: keeps the cord secure.
• Safety: unplug before any electrical repair.

Electric ePX and WPX models have their own parts profile. The GFCI cord is a safety part and is replaced when it will not reset or shows damage, and the power switch is a frequent failure. The motor and pump assembly is the core, and the Total Stop System controls the automatic start and stop when the trigger is released. Power cord retainers and covers are simple parts that break with handling. Because these are electrical, always unplug the machine and release pressure before touching anything. For the manual and part references, our guide on a pressure washer manual is a good companion.

Guns and Hoses in Detail

• Spray gun: available as a complete replacement unit.
• EndraGrasp gun: the lightweight model on many machines.
• Hose: 25 feet standard, M22 quick connect both ends.
• Hose options: 50-foot replacements for extra reach.
• Quick connect kits: upgrade the whole system.
• O rings and screens: the cheap fix for leaks.

The gun and hose are the most replaced items. Westinghouse sells complete spray guns, including the lightweight EndraGrasp model found on many machines, and standard 25-foot hoses with M22 quick connect ends. Many owners upgrade to a 50-foot hose for reach, and quick connect kits convert the whole system to click-together convenience. New o rings and screens fix most leaks for pennies, and because the fittings are standard M22 and 1/4 inch, generic replacements fit. This is where the value of a widely used design pays off. For the hose upgrade, our guide on hose length is a good match.

Wands and Nozzles

• Lance: the 14-inch wand on many models.
• Extendable wand: the Pro-Style steel wand on others.
• Nozzle kit: 0°, 15°, 25°, 40°, and soap tips.
• Turbo nozzle: rotating jet for faster flat work.
• Foam cannon and soap applicator: for detergent work.
• Gutter wand: extends reach for gutters.

Wands and nozzles are consumables, and replacements restore performance instantly. Westinghouse offers the standard 14-inch lance and a Pro-Style extendable wand depending on model, along with nozzle kits covering the color-coded tips plus soap. A turbo nozzle speeds flat work, and a foam cannon or soap applicator handles detergent jobs. A gutter wand extends reach for roof lines. Because the tips share the universal 1/4 inch fitting, you can also buy generic nozzle sets that fit. Matching the orifice to your machine’s flow keeps the spray right. For the nozzle details, our guide on nozzle replacement is useful, and for the turbo choice, our guide on a turbo nozzle is a good match.

Pump Parts and Rebuilds

• Complete pump: listed in the RPL as a single part.
• Seal and packing kits: for internal wear.
• Check valves: restore consistent pressure.
• Inlet and outlet: the water connection parts.
• Match the pump for any internal kit.
• A pump swap is often cheaper than a new machine.

The pump is the heart of the machine and the most expensive single part. Westinghouse lists a complete pump in the RPL, which is the simplest solution when the pump fails. For internal wear, seal and packing kits and check valves restore performance, though these require matching the exact pump. Inlet and outlet parts handle the water connections. Because a complete pump replacement is far cheaper than a new pressure washer, a pump failure is usually a repair situation rather than a reason to replace the machine. For the parts approach, our guide on a wand repair kit shows the same repair-not-replace logic.

Accessories and Upgrades

• Surface cleaners: 12 to 16.5 inch for flat work.
• Extension wand: reach second-story and rooflines.
• Turbo nozzle: faster driveway cleaning.
• 50-foot hose: more reach without moving the machine.
• Short gun: for close and detail work.
• Quick connect kits: speed up every change.

Westinghouse sells a wide accessory line that turns a basic washer into a versatile tool. Surface cleaners from 12 to 16.5 inches speed flat work, an extension wand reaches high areas, and a turbo nozzle cleans driveways faster. A 50-foot hose extends range, a short gun helps with close detail, and quick connect kits streamline every change. Because the fittings are standard, most Westinghouse accessories also work with other brands, and vice versa. Building an accessory kit around the machine multiplies what it can do. For the surface cleaner option, our guide on a pro surface cleaner is a good companion.

Pump Oil and Maintenance

• Sealed axial pumps: many Westinghouse pumps are maintenance-free.
• Serviceable pumps: use non-detergent SAE 30 oil.
• Oil change: per the manual, often annually.
• Inlet filter: flush or replace when clogged.
• Never let it freeze: drain and store above freezing.
• Check the sight glass for level and color if equipped.

Westinghouse axial cam pumps are often described as maintenance-free, which reflects their sealed or low-maintenance design, but even these benefit from clean, cool water and a clear inlet filter. Where a pump is serviceable, use non-detergent SAE 30 oil and change it per the manual, often annually. Flush or replace the inlet filter when it clogs, since grit is the enemy of any pump. Above all, drain the machine and store it above freezing, because ice cracks pumps and fittings faster than anything else. This care extends the life of the most expensive part. For the oil specifics, our guide on pump oil substitutes is useful.

Rebuild vs Replace

Most Westinghouse repairs are straightforward part swaps. A leaking gun is fixed with o rings or a new gun, a clogged or bent wand with a new lance, and a worn hose with a new hose. A cracked pump is replaced as a unit, which is still cheaper than a new machine unless the whole washer is old and worn. A failing electric switch is a simple replacement. Weighing the part cost against a new unit tells you the path, and for a machine in otherwise good shape, repair almost always wins. For the parts mindset, our guide on Westinghouse parts and maintenance is a good companion.

Common Mistakes

• Ordering by description instead of the part number.
• Missing a supersession and ordering a discontinued number.
• Letting the machine freeze with water inside.
• Running without the inlet filter, feeding grit to the pump.
• Using the wrong oil in a serviceable pump.
• Ignoring a small leak until it damages more parts.
• Buying the wrong fitting size for a replacement gun or hose.

A few mistakes cause most Westinghouse parts headaches. Ordering by description rather than part number invites a wrong item, and missing a supersession leads to a discontinued part. Letting the machine freeze cracks the pump and fittings, and running without the inlet filter feeds grit straight into the pump. Wrong oil damages a serviceable pump, ignoring a small leak lets damage spread, and buying the wrong fitting size for a gun or hose wastes time. Each is easy to avoid with the RPL in hand and a little care. For the fitting detail, our guide on quick connect o rings is useful.

Diagnosing a Failed Part

• Weak or pulsing spray: clogged nozzle, screen, or inlet filter.
• Leak at the gun: worn o rings, or a cracked gun body.
• Leak at a joint: worn o ring or loose connection.
• No pressure at all: pump, inlet, or unloader issue.
• Water in the oil: internal pump seals failing.
• No start (gas): fuel, spark, or a low-oil sensor.
• No power (electric): GFCI, cord, or switch.

Diagnosing before ordering saves money. A weak or pulsing spray is almost always a clogged nozzle, screen, or inlet filter, not a bad pump, so clean those first. A leak at the gun or a joint points to a worn o ring, while a cracked housing needs a new gun. No pressure at all suggests the pump, inlet, or unloader, and water in the pump oil means internal seals are failing. On gas models, a no-start is usually fuel, spark, or the low-oil sensor, and on electric models it is the GFCI, cord, or switch. Matching symptom to cause prevents buying the wrong part. For the seal details, our guide on quick connect o rings is useful.

Using the Warranty and Support

• Residential warranty: three years limited.
• Commercial warranty: one year limited.
• Coverage: typically parts, labor, and service.
• Registered product: keep your proof of purchase.
• Service hotline: help with parts and diagnosis.
• Out-of-warranty: buy parts and repair yourself or via a shop.

Before buying a part, check whether the machine is still under warranty. Westinghouse covers residential machines for three years and commercial use for one, often including parts, labor, and service, so a covered failure should go through the service channel rather than your wallet. Keep your proof of purchase and register the product. If it is out of warranty, buy the part by number and repair it yourself or through a small-engine or pressure washer shop. Knowing the coverage prevents paying for a repair that is free. For the parts-buying approach, our guide on sourcing pressure washer parts is a good parallel.

Cost of Common Parts

The cost of Westinghouse parts is one of the brand’s strengths. Spray guns run in the low tens of dollars, lances around ten, and inlet filters and screens just a few dollars. Nozzle kits and hoses are inexpensive, turbo nozzles cost a bit more, and even a complete pump costs far less than a new pressure washer. That economics is why repairing a Westinghouse makes sense in almost every case short of a machine that is old and worn throughout. Keep a few spares on hand and a small failure never stops a job. For the parts approach in another brand, our guide on Westinghouse parts and maintenance is a good companion.

Preventive Maintenance Schedule

• After every use: flush the inlet screen and check for leaks.
• Weekly: inspect the gun, wand, and nozzle tips.
• Monthly: check pump oil if serviceable.
• Seasonally: replace worn o rings and nozzles.
• Annually: change pump oil if serviceable.
• Before storage: drain fully and store above freezing.

A little routine keeps a Westinghouse in service for years. Flushing the inlet screen and checking for leaks after each use catches problems early, and weekly inspections of the gun, wand, and tips spot wear before it becomes a failure. Checking pump oil monthly where serviceable, replacing o rings and nozzles each season, and changing oil annually keep the machine in top shape. Draining fully and storing above freezing before winter prevents the freeze damage that claims more pumps than anything else. This schedule is quick, free, and far cheaper than repairs. For the oil detail, our guide on pump oil is a good reference.

Frequently Asked Questions

Where can I buy Westinghouse pressure washer replacement parts? From Westinghouse directly, from the official Westinghouse Power Equipment parts site, and from major retailers and online marketplaces.

How do I find my Westinghouse model number? Check the data plate on the machine and the cover of the owners manual. The model number leads to the correct replacement parts list.

What part fails first on a Westinghouse pressure washer? Usually the spray gun, then the lance, hose, and nozzle tips, with the pump lasting longest when maintained.

Can I use generic parts on a Westinghouse washer? Yes for many items. The M22 hose fittings and 1/4 inch nozzle fittings are standard, so generic guns, hoses, and nozzles often fit.

Does Westinghouse sell a nozzle kit? Yes. Westinghouse offers a nozzle kit covering the standard tips, and individual tips are also available.

How long is the Westinghouse warranty? Three years limited for residential use and one year limited for commercial use.

Final Thoughts

Westinghouse pressure washer replacement parts are among the easiest in the category to source, thanks to published parts lists and direct sales. Identify your model, read the RPL, match the index number, and order by part number. Stock the common wear parts, the gun, wand, hose, nozzles, and screens, and keep the pump oiled and the inlet filter clean. Treat the machine as serviceable and it will reward you with years of work.