JP-3504-3MMB Gas Pressure Washer — JP Series 3500 PSI with Mi-T-M OHV Engine
The JP-3504-3MMB 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. The JP-3504 is the entry to Mi-T-M's high-output JP Series; at this output level it handles fleet washing, agriculture equipment, and property maintenance work that stalls lighter 3000 PSI units. Buyers choosing between the 3MMB (Mi-T-M OHV), 3MHB (Honda GX390), and 3MKB (Kohler CH440) variants get identical frame, pump, and accessories — the only difference is the engine and its authorized service network.
JP-3504-3MMB Cleaning Output and Engine Comparison
At 12,250 CU the 3504 frame outpaces the JP-3003 (9,000 CU) by 36 percent, enough to meaningfully reduce rinse passes on large surfaces. The Mi-T-M OHV engine suits buyers whose preferred repair shop stocks Mi-T-M parts or who want uniform engine inventory across a multi-unit fleet.
3500 PSI at 3.5 GPM (12,250 CU) — removes heavy mud, road film, and oxidized paint from equipment without multiple passes
420cc Mi-T-M OHV engine — direct factory parts support; matches fleets already running Mi-T-M power equipment
AR crankshaft pump, forged brass manifold — crankshaft geometry handles sustained daily operation better than axial designs
Thermal relief valve and in-line water strainer — protects pump from heat build-up when trigger is held closed and from particulates in supply water
50-ft × 3/8-in non-marking hose, 48-in lance — longer lance reduces back strain; 50-ft reach covers most trailer and box truck lengths
Powder-coated steel frame, 10-in flat-free tires — withstands job-site impact; tires never need inflation mid-shift
JP-3504-3MMB Applications and Environments
Fleet maintenance operations use the JP-3504-3MMB to wash trucks, trailers, and construction equipment where 3000 PSI units leave road film on heavily soiled undercarriages. Agricultural producers wash combines, sprayers, and grain trailers at season end. Property maintenance contractors clean parking decks, loading docks, and building facades. Municipalities apply it to street sweeper washdown and vehicle yard cleaning. Construction firms use it for concrete form cleaning and equipment prep before painting.
JP-3504-3MMB 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"
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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.
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Mi-T-M JP-3504-3MMB Gas Pressure Washer – 3500 PSI, 3.5 G...
What does 12,250 cleaning units mean for the JP-3504-3MMB?
Cleaning units (CU) = PSI × GPM. The JP-3504-3MMB produces 3500 × 3.5 = 12,250 CU. By comparison, a 3000 PSI / 3.0 GPM unit produces 9,000 CU — 36% less cleaning power per pass. Higher CU means fewer rinse passes on heavily soiled surfaces like muddy equipment or road-filmed trucks.
How does the JP-3504-3MMB differ from the JP-3504-3MHB and JP-3504-3MKB?
All three share the same 3500 PSI / 3.5 GPM rating, AR crankshaft pump, steel frame, 50-ft hose, and 48-in lance. The only difference is the engine: 3MMB uses a 420cc Mi-T-M OHV, 3MHB uses a 389cc Honda GX390, and 3MKB uses a Kohler CH440. Choose based on your preferred engine service network.
Is the JP-3504-3MMB AR pump an axial or crankshaft design?
The AR pump on the JP-3504-3MMB is a crankshaft design. Crankshaft pumps use a separate bearing assembly that keeps the pump oil isolated from engine heat, allowing sustained operation in daily commercial use. Axial pumps share a shaft with the engine and are better suited for lighter-duty intermittent use.
Can the JP-3504-3MMB be sold or operated in California?
No. The 420cc Mi-T-M OHV engine is a 49-state engine that does not meet California Air Resources Board (CARB) small engine emissions standards. It cannot be sold or registered for use in California.
What accessories are included with the JP-3504-3MMB?
The JP-3504-3MMB includes three quick-connect nozzles (0°, 15°, 25°), a 50-ft × 3/8-in non-marking high-pressure hose, a 48-in lance, and an insulated trigger gun. The Mi-T-M adjustable pressure unloader is installed on the pump.
What is the thermal relief valve on the JP-3504-3MMB?
The thermal relief valve automatically releases a small amount of hot water when the trigger is closed for extended periods, preventing heat build-up in the pump head. This protects the pump seals and pistons from damage during idle periods on job sites.
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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