CA-3504-1MAM Gas Pressure Washer — CA Aluminum Series 3500 PSI with Mi-T-M OHV Engine
The CA-3504-1MAM produces 3500 PSI at 3.5 GPM — 12,250 cleaning units — from a 420cc Mi-T-M OHV engine paired with an AR crankshaft pump on Mi-T-M's 125-lb aluminum frame. Of the three engine options on the CA-3504 frame — Honda GX390 (1MAH), Kohler CH440 (1MAK), Mi-T-M OHV (1MAM) — this variant consolidates engine and pump support under Mi-T-M's authorized dealer network. Buyers who already operate Mi-T-M washers at lower output levels can extend the same engine parts inventory to this higher-output unit, simplifying procurement and technician training across a mixed-output fleet.
CA-3504-1MAM Engine and Single-Brand Service Advantage
The 420cc Mi-T-M OHV engine matches the Kohler CH440 in the 420cc displacement class and provides the torque needed to sustain 3500 PSI / 3.5 GPM at the AR pump under continuous operation. With both engine and pump supported by Mi-T-M dealers, warranty claims, parts orders, and scheduled service flow through one contact — a logistical advantage for fleets managing multiple pressure washers across geographically distributed sites.
3500 PSI at 3.5 GPM (12,250 CU) — 36% more cleaning power than the CA-3003; handles heavy equipment fouling, industrial surfaces, and fleet washing in fewer passes
420cc Mi-T-M OHV engine — engine and pump both under Mi-T-M warranty; parts and service through one dealer contact for entire unit
AR crankshaft pump, forged brass manifold, thermal relief valve — AR rated for sustained 3500 PSI; brass handles mineral water; thermal valve protects seals during idle
125-lb corrosion-resistant aluminum frame, 13-in flat-free tires — lighter than steel-frame alternatives; large tires handle rough job-site terrain
CX-0098 External Bypass System available — must be ordered with unit; protects AR pump from heat build-up during trigger-closed periods
CA-3504-1MAM Applications and Environments
Mi-T-M fleet operators use the CA-3504-1MAM to standardize engine parts across their full pressure washer inventory: one oil specification, one air filter, one service technician, one parts supplier for all units from 2400 PSI to 3500 PSI. Construction companies that already have Mi-T-M dealer accounts use the 12,250 CU output for equipment prep between sites, concrete form cleaning, and building exterior washing. Industrial facilities apply it to production equipment washdown between manufacturing runs. Agricultural producers use it for post-harvest machinery cleaning where sustained high-pressure output clears caked residues that lighter units cannot handle in reasonable time.
CA-3504-1MAM GPM, PSI, and Nozzle Configuration
Rated at 3.5 GPM at 3500 PSI (12,250 cleaning units) at rated flow. Includes quick-connect nozzles in 0°, 15°, and 25° patterns; 50-ft × 3/8-in non-marking high-pressure hose; 48-in lance with insulated trigger gun. Cold water only. 49-state engine — not for sale in California.
"1 Year Unloader, 3 Year Honda Engine, 7 Year Pump"
B2B & Tax-Exempt Purchases
We supply contractors, restoration companies, property managers, schools, government agencies, and other tax-exempt organizations.
How to place a tax-exempt order:
Write to us through our Contact Us page or email info@uscleaningtools.com and attach your valid tax exemption certificate (state resale or exemption certificate).
We verify your certificate and mark your account tax-exempt — usually within one business day.
Place your order and sales tax will not be charged.
For volume pricing or purchase orders, call +1 (978) 295-7538.
Shipping & Returns
Free shipping on most brands for orders over $300, delivered to the lower 48 states. Any brand-specific freight rate is shown at checkout before you pay.
Processing & delivery: in-stock orders are processed within 1–2 business days and typically deliver in 5–7 business days. Tracking is emailed within 24 hours of shipment. Built-to-order and backordered equipment shows its lead time on this page.
Freight deliveries: inspect your equipment on arrival and note any damage on the delivery receipt. Items damaged in transit or defective on arrival are fully covered at no cost to you.
Cancellations: cancel any time before your order ships for a full 100% refund.
30-day returns: return unused equipment in its original packaging within 30 days of delivery. Change-of-mind returns are subject to a restocking fee. To start a return, email info@uscleaningtools.com or call +1 (978) 295-7538.
ETL listing is not listed in the product specifications for the CA-3504-1MAM (Mi-T-M OHV variant), unlike the Honda (1MAH) and Kohler (1MAK) variants which carry ETL listing. Buyers requiring ETL certification for facility procurement should select the 1MAH or 1MAK variant.
What is the single-brand service advantage of the CA-3504-1MAM?
The CA-3504-1MAM uses a 420cc Mi-T-M OHV engine. With both engine and AR pump supported by Mi-T-M's authorized dealer network, warranty claims, parts orders, and service scheduling flow through one contact. Buyers managing fleets of Mi-T-M washers at multiple PSI levels benefit from a single parts supplier for all units.
How does the 420cc Mi-T-M OHV compare to the 389cc Honda GX390 on this frame?
The Mi-T-M OHV at 420cc is 8% larger displacement than the Honda GX390 at 389cc. Both engines maintain rated 3500 PSI / 3.5 GPM (12,250 CU) under normal conditions. The additional displacement provides a modest torque reserve under high ambient temperature or sustained heavy load conditions.
Can the CA-3504-1MAM be sold or operated in California?
No. The 420cc Mi-T-M OHV is a 49-state engine that does not comply with California CARB small engine emissions standards. The CA-3504-1MAM cannot be sold or registered in California.
What CU output does the CA-3504-1MAM produce versus the CA-3003-1MAM?
The CA-3504-1MAM produces 3500 × 3.5 = 12,250 CU. The CA-3003-1MAM produces 3000 × 3.0 = 9,000 CU. The CA-3504 delivers 36% more cleaning power, weighs 125 lbs versus 105 lbs, and uses the same Mi-T-M OHV engine platform — differing only in displacement (420cc vs 300cc) to support the higher output.
What bypass accessory is compatible with the CA-3504-1MAM?
The CX-0098 External Bypass System is the compatible bypass accessory for the CA-3504 series. It must be ordered with the unit. It allows additional water to flow through the AR pump when the trigger is held closed, preventing heat accumulation that could damage pump valves and seals at sustained 3500 PSI operation.
Frequently Asked Questions
1. What payment methods can I use?
We accept Visa, MasterCard, American Express, Diners Club, Discover, major debit cards, and digital wallets like PayPal, Google Pay, Meta Pay, and Apple Pay.
2. When will my payment be processed?
Your credit/debit card or PayPal account will be charged when you place your order. Secure payment processing protects your information.
3. Will I receive an order confirmation?
Yes, a confirmation email will be sent to the provided email address once the order is placed.
4. How long does it take to process an order?
Orders are processed within 1-2 business days and then prepared for shipment.
5. How long does it take for my order to arrive?
Estimated arrival time (ETA) is 5-7 business days for all orders.
6. Do you offer warranty?
All our products come with a manufacturer warranty of at least 1 year, depending on the brand.
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