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Mi-T-M CBA-4004-1MCH Aluminum Belt Drive Pressure Washer – 4000 PSI, 3.7 GPM, Honda

Mi-T-M CBA-4004-1MCH Aluminum Belt Drive Pressure Washer – 4000 PSI, 3.7 GPM, Honda

Brand: Mi-T-M SKU: CBA-4004-1MCH In Stock – Ready to Ship
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Mi-T-M CBA-4004-1MCH — Belt-Drive 4000 PSI at 3.7 GPM with CAT Pump

The CBA-4004-1MCH delivers 4,000 PSI at 3.7 GPM — the highest flow rate in the 4,000 PSI CBA range — using a CAT pump belt-driven by a 389cc Honda GX390 OHV engine. At 14,800 cleaning units, it out-produces the 3.4 GPM AR-pump CBA-4004 variants by 1,200 CU per minute on the same surface area. At 156 lbs., it's 9 lbs. lighter than other CBA-4004 models.

CBA-4004-1MCH CAT Pump, External Bypass, and Performance Edge

  • CAT pump at 4,000 PSI / 3.7 GPM — Californian-manufactured pump brand used across industrial pressure washing; forged brass manifold and external bypass system standard.
  • 389cc Honda GX390 OHV engine — Pressure Relief Start; belt drive runs pump below engine RPM for lower operating temperature.
  • External bypass system standard — actively recirculates water when trigger is released, preventing heat buildup that damages seals.
  • Thermal relief valve and clear-sleeve water filter — secondary heat protection; filter checks in under 30 seconds.
  • Corrosion-resistant aluminum frame at 156 lbs. — 9 lbs. lighter than the AR-pump CBA-4004 models; 13-inch flat-free tires.

High-Flow Industrial Cleaning Applications

At 3.7 GPM, the CBA-4004-1MCH applies more water volume per minute than the 3.4 GPM CBA-4004 variants — a meaningful difference when cleaning large areas like concrete parking decks, industrial equipment bays, and livestock facilities. The external bypass standard on this model makes it better suited to stop-and-start cleaning patterns — such as working around equipment and obstacles — without risking pump damage from heat soak. Painting contractors use the combination of 4,000 PSI and 3.7 GPM for wet media blasting prep and paint stripping on large metal structures where both pressure and flow are required. ETL certified; 49-state — not for California.

Included Accessories and Documentation

Includes quick-connect nozzles 0°, 15°, 25°, and 40°; 50-ft non-marking hose; 48-inch lance; insulated trigger gun.

PSI 4,000
GPM 3.7
Engine 389cc Honda GX390 OHV
Pump CAT
Unloader Adjustable pressure
Lance 48 in.
Net Weight 156 lbs.
Dimensions (L × W × H) 47.00 × 27.50 × 28.50 in.

Documents

Spec Sheet
Manual

Product Warranty Information

"3 Year Honda Engine, 7 Year CAT Pump"
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Frequently Asked Questions

How does the CBA-4004-1MCH differ from other CBA-4004 models?
The CBA-4004-1MCH uses a CAT pump producing 4,000 PSI at 3.7 GPM (14,800 CU), versus the AR-pump 1MAH/1MAK/1MAM variants at 3.4 GPM (13,600 CU). It also includes the external bypass system as standard and weighs 156 lbs. versus 165 lbs. for the AR-pump models.
What is a CAT pump and how does it compare to AR pumps?
CAT pumps are California-manufactured triplex plunger pumps used widely in industrial pressure washing. Both CAT and AR are premium commercial pump brands. CAT pumps are known for ceramic plunger sleeves and robust seal designs; AR pumps are Italian-made with comparable reliability. The CBA-4004-1MCH achieves 3.7 GPM with the CAT pump versus 3.4 GPM with the AR pump — a performance advantage at the same pressure.
Is the external bypass system standard or optional on the CBA-4004-1MCH?
Standard. Unlike the AR-pump CBA-4004 variants where the CX-0082 external bypass is optional and must be ordered in advance, the CBA-4004-1MCH includes the external bypass as a standard component.
What is the cleaning units (CU) rating of the CBA-4004-1MCH?
4,000 PSI × 3.7 GPM = 14,800 cleaning units — the highest output among all the 4,000 PSI CBA aluminum series models listed.
How much does the CBA-4004-1MCH weigh?
156 lbs. net weight — 9 lbs. lighter than the AR-pump CBA-4004 variants at 165 lbs., on the same corrosion-resistant aluminum frame with 13-inch flat-free tires.
Is the CBA-4004-1MCH available for California buyers?
No. The 389cc Honda GX390 in this configuration is a 49-state engine that does not meet CARB emissions standards. Contact Mi-T-M factory for a California-compliant alternative.

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Frequently Asked Questions

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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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