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Mi-T-M WP-4200-0MKB Gasoline Pressure Washer – 4200 PSI, 3.4 GPM, Kohler CH440
$1,990.00
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-4200-0MKB Gas Pressure Washer — Work Pro 4200 PSI with Kohler CH440
The Mi-T-M Work Pro WP-4200-0MKB pairs the Work Pro 4,200 PSI output with a 429cc Kohler CH440 OHV engine instead of the Honda GX390. Output is identical to the 0MHB variant: 4,200 PSI at 3.4 GPM, 14,280 cleaning units, through the same Mi-T-M crankshaft pump. The Kohler CH440 is a commercial-grade heavy-duty OHV with cast-iron cylinder sleeve, specified by buyers who run Kohler-powered fleets or prefer Kohler's commercial warranty structure.
WP-4200-0MKB Kohler CH440 Engine and Pump System
The CH440 at 429cc is the largest Kohler CH-series single-cylinder, used in heavy-load applications including commercial mowers, generators, and high-output pumps — the torque headroom ensures the pump stays at 4,200 PSI under continuous load.
- 4,200 PSI at 3.4 GPM (14,280 CU) — same output as the Honda variant; choose engine on service preference, not output difference
- 429cc Kohler CH440 OHV engine — Kohler's largest CH-series commercial single-cylinder; cast-iron sleeve, full-pressure lubrication, extended drain intervals
- Mi-T-M crankshaft pump — brass manifold, thermal relief valve, Pressure Relief Start, in-line water strainer; rated for sustained heavy commercial use
- Adjustable pressure unloader — variable pressure for different surfaces and applications without a nozzle change
- 50-foot × 3/8-inch wire-braided hose — adequate for fleet wash bays, building exteriors, and structural steel cleaning from a single position
- 10-inch flat-free tires, powder-coated steel frame — outdoor-rated construction for job site exposure
WP-4200-0MKB Applications and Environments
Municipal equipment yards, county road departments, and agricultural cooperatives that standardize on Kohler-powered equipment find the WP-4200-0MKB integrates cleanly into their existing service and parts program. The CH440's full-pressure lubrication system is better suited for sustained high-load operation than splash-lube designs — important when the machine runs 4–6 hours per day on fleet washing routes. Construction and demolition cleanup contractors use the 14,280 CU output for post-demo concrete and masonry cleanup. At 142 lbs, two-person handling is required for trailer loading; the machine is otherwise maneuverable on flat surfaces via the 10-inch tires.
WP-4200-0MKB 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 Kohler CH440 — 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 | 429cc Kohler CH440 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 | Kohler |
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.
$1,990.00
Complete your setup
Commonly paired with the Mi-T-M WP-4200-0MKB Gasoline Pressure Washer – 4200 PSI, 3.4 GPM, Kohler CH440
Added to your order — shipped together.
Frequently Asked Questions
Parts & Accessories That Fit the Mi-T-M WP-4200-0MKB 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-4200-0MKB 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-4004-1MGM Belt Drive Pressure Washer | 4,000 PSI | 4 GPM | Cold |
| Mi-T-M WP-4200-0MHB Gasoline Pressure Washer | 4,200 PSI | 3.4 GPM | Cold |
| Mi-T-M WP-4200-0MKB Gasoline Pressure Washer— this model | 4,200 PSI | 3.4 GPM | Cold |
| Mi-T-M CWC-5004-4MAH Belt Drive Pressure Washer | 5,000 PSI | 4 GPM | Cold |
| Mi-T-M CWC-5004-4MAM Belt Drive Pressure Washer | 5,000 PSI | 4 GPM | Cold |
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