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Diesel Hydraulic Power Units

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Diesel Hydraulic Power Units D-23S12-J4-W

12 GPM Diesel Hydraulic Power Unit — 23 HP, Fixed Flow

23 HP · Diesel · Wheeled frame · For boring, breakers & hydraulic tooling

$14,780

Price excl. tax. Free Freight, US Lower 48

In stock · Ships in 1–2 business days Only 2 left
Flow rate 12 GPM (fixed)
Working pressure 2,000 PSI
Horsepower 23 HP
Fuel / power Diesel Hydraulic Power Units · Rehlko
Frame Wheeled
Dry weight 503 lb
$14,780
Secure checkout
1-year warranty
US service network
US-based support
Free freight — US lower 48

Overview

The HydraTough D-23S12-J4-W is a 12 GPM diesel hydraulic power unit built for hydraulic breakers, underground boring, hydraulic excavation and similar field work. It delivers 2,000 PSI working pressure from a 23 HP Rehlko engine, with a fixed 12 GPM flow rate. Single-circuit, wheeled for easy movement around a site. In stock — ships from US warehousing in 1–2 business days.

Model decoder

HydraTough model numbers identify the unit's configuration — fuel, horsepower, pump setup, flow and frame.

D-23S12-J4-W

D
Diesel engine
23
23 HP
S
Single circuit
12
12 GPM
J4
Fixed flow
W
Wheel frame

Technical specifications

Model number D-23S12-J4-W
Fuel type Diesel Hydraulic Power Units
Working pressure 2,000 PSI
Horsepower 23 HP
Engine Rehlko
Circuit type Single circuit
Frame Wheeled
Dry weight 503 lb
Flow rate 12 GPM (fixed)
Relief valve setting 1,950 PSI
Engine / motor model KDW1003
Flow configuration Fixed
Dimensions (L×W×H) 43" x 30" x 37"
Hydraulic fluid capacity 5.5 gal
Fuel tank capacity 4.2 gal
Max RPM 3,600
Coupling type 3/8" HTMA, ISO 16028
Warranty period 1 year

Product information

This portable diesel hydraulic power unit runs hydraulic tools across various job-site conditions. The wheeled frame moves easily over rough ground, and the 12 GPM (fixed) output matches a range of tools. Compare flow rate, horsepower, and circuit type against your tools to confirm fit.

Applications

Hydraulic breakers
Underground boring
Hydraulic excavation
Marine & underwater
Oilfield

Built for salt water

The D-23S12-J4-W is a proven choice for marine contractors, dock crews, and coastal operations. Diesel power suits the long run times and remote environments that marine work demands, and the wheeled frame means it loads onto a vessel or positions on a dock without a crane. 23 HP and a fixed 12 GPM output — reliable power for the tools your crew runs on the water.

Designed to be serviced

Every HydraTough unit is built for straightforward field servicing. Parts are stocked in the US. Manuals are free — no account or registration required.

Warranty & service

How we stack up

HydraTough vs typical competitors.

Feature / benefit
HydraTough
Typical competitors
Flow performance
HydraTough Tested to hit rated GPM at rated PSI
Typical competitors Often rated on paper, not verified under load
Component access / maintenance
HydraTough Open access to hydraulic components for easy maintenance
Typical competitors Components frequently enclosed, harder to service
Fuel tank
HydraTough Large EPA-compliant 5-gallon tank (Prowler frame)
Typical competitors Smaller tanks, more frequent refueling
Lead time
HydraTough Ships in 1–2 business days on standard models
Typical competitors Often multi-week lead times
Customization
HydraTough Custom units built to spec available upon request
Typical competitors Standard configurations only

Reviews

What crews say after the job.

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FAQs

Frequently asked questions

Still not sure if this is the right unit? Our US-based team can help you match it to your tools.

Talk to us

Built for hydraulic breakers, underground boring, hydraulic excavation, marine & underwater, oilfield.

D = diesel engine, 23 = 23 hp, S = single circuit, 12 = 12 GPM, J4 = fixed flow, W = wheel frame.

Yes — it's wheeled and weighs 503 lb, built to move around a site.

In-stock units ship from US warehousing in 1–2 business days.

Standard units are direct purchase. For custom specifications, visit our custom units page (/products/custom).

Yes, quick connect couplers can be removed or replaced with customer specified couplers.

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