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Mi-T-M WP-4200-0MHB Gasoline Pressure Washer – 4200 PSI, 3.4 GPM, Honda GX390
$1,780.00
Ships from US manufacturer with factory warranty
Authorized RetailerFactory-authorized dealer with genuine products
Manufacturer's WarrantyFull manufacturer warranty included
30-Day ReturnsHassle-free returns within 30 days
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Order before 5:00 PM EST for same-day dispatch. Estimated delivery:
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+1 (978) 295-7538WP-4200-0MHB Gas Pressure Washer — Work Pro 4200 PSI with Honda GX390
The Mi-T-M Work Pro WP-4200-0MHB is the highest-output model in the Work Pro direct-drive line, producing 4,200 PSI at 3.4 GPM — 14,280 cleaning units — driven by a 389cc Honda GX390 OHV engine and a Mi-T-M crankshaft pump. The GX390 is Honda's heavy-duty commercial single-cylinder, common in concrete saws, construction compactors, and high-flow pumps — it carries the output headroom needed to sustain 14,000+ CU output through surface cleaners and extended cleaning runs. Cold water only.
WP-4200-0MHB High-Output Cleaning Configuration
At 14,280 cleaning units, this unit is 87% more productive than the 7,680 CU WP-3200 — the difference registers immediately on large concrete areas, fleet vehicles, and heavy equipment where throughput is the productivity constraint.
- 4,200 PSI at 3.4 GPM (14,280 CU) — sufficient for concrete stripping, rust removal, fleet washing, and structural steel cleaning at commercial throughput rates
- 389cc Honda GX390 OHV engine — Honda's commercial heavy-duty single-cylinder with 11.7 ft-lbs torque; wide service network and GX-series parts availability
- Mi-T-M crankshaft pump with brass manifold — commercial-duty triplex design; thermal relief valve, in-line water strainer, and Pressure Relief Start standard
- Adjustable pressure unloader — scale pressure down for vehicle washing without nozzle changes
- 50-foot × 3/8-inch wire-braided hose — reaches across standard truck wash bays and equipment storage areas without repositioning
- 10-inch flat-free tires, 40-inch powder-coated steel frame — stable on job site surfaces; resists corrosion for outdoor storage
WP-4200-0MHB Applications and Environments
Fleet maintenance shops washing Class 8 semi-trucks and tanker trailers find the 14,280 CU output reduces wash time versus lower-output machines. Concrete contractors use it for cured form release removal and slab preparation where 3,600 PSI works too slowly on mineral-bond residue. Agricultural operations cleaning grain combines, planters, and applicator booms need the GPM to move heavy soil load. Property restoration contractors running post-storm mud and debris removal from parking structures and building exteriors get meaningful coverage at 3.4 GPM. The 142 lb weight requires two-person handling for trailer loading.
WP-4200-0MHB GPM, PSI, and Nozzle Configuration
Rated at 3.4 GPM at 4,200 PSI (14,280 cleaning units) at rated flow. Includes 15°, 25°, and detergent quick-connect nozzles; 50-foot × 3/8-inch wire-braided hose; 36-inch two-piece lance with trigger gun. Cold water only. 49-state Honda GX390 — not for sale in California.
Specifications
| PSI | 4,200 PSI at rated flow |
| GPM | 3.4 GPM |
| Cleaning Units | 14,280 CU (PSI × GPM) |
| Engine | 389cc Honda GX390 OHV |
| Pump Type | Mi-T-M Crankshaft |
| Unloader | Adjustable Pressure |
| Hose | 50 ft × 3/8 in wire-braided |
| Nozzles Included | 15°, 25°, detergent |
| Net Weight | 142 lbs |
| Dimensions (L × W × H) | 40 × 22.5 × 24.5 in |
| Hot/Cold | Cold water only |
| California Sale | Not for sale in CA (49-state engine) |
Documents
| Type | Cart |
|---|---|
| Pressure | 4200 PSI |
| Flow Rate | 3.4 GPM |
| Water Temp | Cold |
| Power | Gasoline |
| Engine | Honda |
Product Warranty Information
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. Refunds are issued for the order total minus the non-refundable payment processing fee (2.9% + $0.30), so a cancellation is not always a 100% refund. No fee is deducted if we cancel the order or the item arrives damaged or defective.
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.
$1,780.00
Complete your setup
Commonly paired with the Mi-T-M WP-4200-0MHB Gasoline Pressure Washer – 4200 PSI, 3.4 GPM, Honda GX390
Added to your order — shipped together.
Frequently Asked Questions
Parts & Accessories That Fit the Mi-T-M WP-4200-0MHB Gasoline Pressure Washer
Confirmed-fit wear parts and accessories for this machine. Not sure which you need? Call 9782957538.
How the Mi-T-M WP-4200-0MHB Gasoline Pressure Washer Compares to Other Mi-T-M pressure washers
The closest 5 models from the 61 Mi-T-M pressure washers we carry, by capacity. Not sure which size fits the job? Call +1 (978) 295-7538.
| Model | Pressure | Flow | Water |
|---|---|---|---|
| Mi-T-M CBA-4004-1MGH Belt Drive Pressure Washer | 4,000 PSI | 4 GPM | Cold |
| Mi-T-M CBA-4004-1MGM Belt Drive Pressure Washer | 4,000 PSI | 4 GPM | Cold |
| Mi-T-M WP-4200-0MHB Gasoline Pressure Washer— this model | 4,200 PSI | 3.4 GPM | Cold |
| Mi-T-M WP-4200-0MKB Gasoline Pressure Washer | 4,200 PSI | 3.4 GPM | Cold |
| Mi-T-M CWC-5004-4MAH Belt Drive Pressure Washer | 5,000 PSI | 4 GPM | Cold |
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