Description
xRevitalize your pressure washer with the SIMPSON AAA 90034 Pump Kit
Engineered to deliver reliable power while reducing engine load, this horizontal triplex pump reaches up to 4400 PSI at 4.0 GPM when paired with compatible gas pressure washers. Designed for machines with a horizontal engine and a 1-inch shaft—such as the Honda GX390—the kit helps you breathe new life into an aging unit without buying a new machine.
The stainless steel integrated unloader includes an easy-start system to help you begin cleaning with less effort, while the pump’s dual oversized ball bearings minimize friction for long-lasting performance in demanding environments.
What’s included
- Replacement pump head with a robust triplex design for steady performance
- Hardware kit and siphon tube for a complete install
- Stainless steel integrated unloader with easy-start capability
- PowerBoost technology that delivers higher pressure at the nozzle
- Hand-turn knob to reduce pressure for lighter tasks
- Sight glass oil level indicator with advanced sealing for easier maintenance
- Garden hose inlet and quick-connect high-pressure outlet compatible with common hoses
Key features at a glance
- SAE standard bolt pattern, designed to fit many gas pressure washers with horizontal engines
- 1-inch shaft compatibility ensures a clean, secure fit on compatible units
- Adjustable power lets you tailor cleaning intensity on the fly
- Durable construction emphasizes reliability in tough cleaning jobs
- Clear oil sighting and robust seals help you monitor lubrication and protect components
Compatibility and installation tips
Before installing, verify engine orientation, PSI and GPM ratings, shaft diameter, and the current inlet/outlet configuration. Confirm compatibility with a SAE bolt pattern and with the hoses you typically use.
- Check engine orientation and shaft size
- Match PSI/GPM and inlet/outlet connections
- Use standard hoses and fittings for quick setup
Performance, maintenance, and what to expect
The PowerBoost feature can help you achieve higher nozzle pressure for tougher spots, while the adjustable knob lets you back off for delicate surfaces. The sight glass shows oil level at a glance, and the integrated oil seals help minimize water intrusion. These elements, along with dual ball bearings and a stainless steel unloader, contribute to a durable, dependable replacement pump.
Why choose this SIMPSON pump kit
Replacing the pump can extend the life of a gas pressure washer and keep it performing reliably for tasks like washing walls, sidewalks, vehicles, and equipment. This kit is designed to be a practical, install-friendly upgrade for compatible machines without promising guaranteed outcomes.
FAQ
Q: What pressure and flow can this pump kit handle?
A: It’s designed to deliver up to 4400 PSI at 4.0 GPM on compatible gas pressure washers.
Q: What should I check before installing?
A: Before installing, verify horizontal engine compatibility, 1-inch shaft, and the inlet/outlet orientation; confirm PSI/GPM and bolt pattern.
Shipping & Return
xReturn Policy
We offer a 30-day return policy, which means you have 30 days after receiving your item to request a return. For Patio, Lawn & Garden items, returns are only accepted for products that arrive damaged, defective, incorrectly shipped, or in a condition that is the fault of the seller.
To be eligible for a return, your item must be in the same condition that you received it — unused, with all original packaging, tags, manuals, parts, and accessories included. Items that show signs of use, installation, outdoor wear, assembly, or damage caused after delivery cannot be returned.
You will also need your receipt or proof of purchase.
To start a return, contact us at gardencanada.ca@gmail.com
All approved returns must be sent to the following address:
Garden Canada – Returns Department
2601 E 28th St, STE 005
Signal Hill, California
United States
If your return is accepted, you will receive a prepaid return shipping label (when applicable) along with detailed instructions on how and where to send your package.
Items sent back without first requesting a return will not be accepted.
You can always reach us at gardencanada.ca@gmail.com for any return-related questions.
Damages and Issues
Please inspect your order upon delivery and contact us immediately if your item is damaged, defective, incorrect, broken, missing parts, or arrives in poor condition. We will evaluate the issue and make it right.
For seller-caused issues (damaged, defective, incorrect), Garden Canada will cover the return shipping cost.
Exceptions / Non-Returnable Items
The following items cannot be returned:
- Used or installed Patio, Lawn & Garden products
- Items showing signs of outdoor use, wear, dirt, or weather exposure
- Plants, seeds, bulbs, fresh flowers, and other perishable goods
- Products returned without original packaging, parts, manuals, or accessories
- Assembled furniture or products damaged during customer assembly
- Customized or personalized items
- Hazardous materials or flammable liquids
- Sale or clearance items
- Gift cards
If you are unsure about your item’s return eligibility, please contact us before sending it back.
Exchanges
Exchanges are only available for unused items that arrived damaged, defective, or incorrect. The fastest way to receive the item you want is to return the original (if eligible) and place a new order once your return is approved.
European Union 14-Day Cooling-Off Period
If your order is shipped into the European Union, you have 14 days to cancel or return the item for any reason. However, Patio, Lawn & Garden items must still be unused, in original condition, and in their original packaging with all included parts and accessories.
Refunds
Once we receive and inspect your return, we will notify you whether the refund was approved. If approved, your refund will be processed to your original payment method within 10 business days.
Please note that your bank or credit card provider may require additional time to process and post the refund.
If more than 15 business days have passed since your refund was approved, please contact us at gardencanada.ca@gmail.com
ORDER PROCESSING TIME
All orders are processed within 2–3 business days after payment confirmation. Orders placed on weekends or holidays will be processed on the next business day.
If there is any delay in preparing your order, we will notify you promptly by email.
SHIPPING TIME
Garden Canada ships exclusively within Canada across all provinces and territories.
Standard delivery: Total delivery time is approximately 5 business days (2–3 business days processing plus delivery time).
Remote or northern regions: 6–10 business days due to distance, weather conditions, and limited carrier routes.
Deliveries to areas such as Yukon, Northwest Territories, Nunavut, and certain rural communities may take longer because of seasonal and logistical factors.
While we always aim for timely deliveries, once a package is handed over to the carrier, Garden Canada is not responsible for carrier delays, service interruptions, or weather-related disruptions.
SHIPPING CONFIRMATION AND TRACKING
Once your order has shipped, you will receive a shipping confirmation email containing your tracking number and a link to track your shipment.
Tracking details typically become active within 24–48 hours after shipment.
SHIPPING RATES
Shipping within Canada is free on all orders.
Expedited or express delivery options may be available at checkout for an additional fee depending on your location.
ADDRESS ACCURACY
Please ensure your shipping address is complete and accurate before placing your order. Garden Canada is not responsible for delays, lost shipments, or delivery issues caused by incorrect or incomplete address information.
DAMAGED OR LOST PACKAGES
If your order arrives damaged, please contact us immediately at gardencanada.ca@gmail.com with clear photos of the package and its contents. We will review the situation and assist you as quickly as possible.
If your package is marked as “delivered” by the carrier but you have not received it, please first:
- Check with neighbors or building management
- Verify the shipping address used during checkout
- Contact your local delivery office
If the issue remains unresolved, please email us and we will help initiate a carrier inquiry or claim when applicable.
INTERNATIONAL SHIPPING
At this time, Garden Canada ships only within Canada. International shipping options may become available in the future.
CONTACT
If you have any questions regarding shipping, please contact us at: gardencanada.ca@gmail.com
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