Kohler · RZX Series (Industrial Gaseous)

Kohler 180RZXB

190 kW standby / 170 kW prime · LPG · Liquid-cooled

170 kW LPG industrial standby generator. Open-frame gaseous standby with Doosan engine for commercial and industrial facilities.

Kohler Kohler 180RZXB generator — specifications and details
Standby power
190 kW / 170 kW prime
Voltage options
120/208V, 277/480V
Frequency / Phase
60 Hz · 3-phase
Engine
Doosan D111TIC · 11.05L
Alternator
Kohler Brushless, Permanent-Magnet
CommercialHealthcareGovernmentindustrial-light
Configure & QuoteDownload spec sheet

Overview#

The Kohler 180RZXB is a 170-kilowatt LPG industrial standby generator in an open-frame (skid-mounted) configuration. Rated at 114-170 kW standby depending on voltage, it uses a Doosan engine paired with a brushless permanent-magnet alternator at 1800 RPM. The open-frame design is intended for indoor mechanical rooms or buildings with dedicated generator enclosures.

Gaseous vs diesel at 170 kW#

At this capacity, gaseous generators eliminate on-site fuel storage requirements and SPCC compliance. LPG provides clean combustion with lower emissions than diesel and avoids the fuel degradation issues common with low-runtime standby diesel units. However, propane tank sizing must account for expected outage duration, and delivery logistics become a factor during regional emergencies.

Our service experience#

PowerGen provides installation, maintenance, and emergency service for Kohler gaseous generators throughout Northern California. The Doosan engine platform in the RZX series is a robust industrial powerplant, and we structure PM programs around annual ignition, fuel system, and coolant inspections.

Engineering specifications

Physical

Length
140.7 in
Width
53.1 in
Height
75.1 in
Wet weight
5,245 lb

Fuel system & runtime

NG required pressure
7 in WC

Photos

Kohler 180RZXB — product photo

Documents & downloads

Spec sheets & manuals

Ready to order this model?

Configure your Kohler 180RZXB

Lock the enclosure, fuel system, transfer switch, and add-ons — we'll confirm pricing, availability, and lead time within one business day. Prefer a free-form quote? That option is still here.

Configure & Quote →Just request a quoteDownload datasheet

Service intervals

Manufacturer-recommended intervals for the Kohler 180RZXB under standby duty. Field intervals may differ based on load profile, ambient conditions, and fuel quality.

Oil & filter
Every 250 hours or 12 months
Coolant change
Every 3000 hours
Air filter
Every 500 hours
Spark plugs
Every 500 hours
Major overhaul
≈ 8,000 hours
Load bank test
Every 12 months

Common failure modes

What we've seen fail on this platform. Use as a service-planning reference, not a diagnostic — actual failure modes depend heavily on duty cycle and maintenance history.

ComponentSymptomTypical hoursSeverity
Spark plugs / ignitionMisfire under load, cylinder dropout codes, rough idle500+minor
Turbocharger sealsOil in intake, blue smoke, boost pressure loss10,000+moderate
Fuel pressure regulator / vaporizerHard starting, gas pressure fault, erratic idle8,000+moderate
Battery (starting)Slow crank, failed exercise8,760+minor

Frequently Asked Questions

What is the standby rating of the Kohler 180RZXB?
The 180RZXB is rated 114-170 kW standby (143-212 kVA) depending on voltage configuration, with prime ratings of 125-148 kW, operating on LPG at 60 Hz.
What fuel does the Kohler 180RZXB use?
The 180RZXB operates on LPG (propane). Natural gas and dual-fuel variants are also available in the RZX line.
What is the difference between RZX and REZX models?
RZX designates the open-frame (skid-mounted) configuration, while REZX is the enclosed (sound-attenuated or weather-protective) version. Both use the same engine-alternator package; the difference is the enclosure.

Compatible equipment

Engine

Transfer switches

More in the RZX Series (Industrial Gaseous)

Kohler RZX open-frame LPG gensets from 190 to 400 kW — skid-mounted for indoor mechanical room installation.

View all 6models in this series →

Similar models

Kohler Kohler 200RZXB 200 kW liquid-cooled standby generator

Kohler

Kohler 200RZXB

200 kW industrial gaseous -- Doosan D111TIC with PM alternator. No fuel storage, no SPCC plan, lower emissions than diesel.

200 kW standby · LPG · Liquid-cooled

175 kW LPG industrial standby generator. Open-frame gaseous standby with Doosan engine for commercial and industrial facilities.

3-phasecommercialhealthcare
Kohler Kohler 180REZXB 190 kW liquid-cooled standby generator

Kohler

Kohler 180REZXB

190 kW industrial gaseous -- Doosan D111TIC with PM alternator, sub-3% THD. No on-site fuel storage required.

190 kW standby · LPG · Liquid-cooled

190 kW LPG industrial standby generator. Enclosed gaseous standby with Doosan engine for commercial, healthcare, and institutional applications.

3-phasecommercialhealthcare
Kohler Kohler KG200 200 kW liquid-cooled standby generator

Kohler

Kohler KG200

200 kW industrial gaseous -- Kohler KG10V08T turbo V8 with PM alternator. No fuel storage, lower emissions, sub-3% THD.

200 kW standby · Natural Gas / LPG / Dual Fuel NG/LPG · Liquid-cooled

200 kW gaseous-fueled commercial standby generator. Large-frame industrial gaseous unit for major commercial and institutional backup.

EPA Stationary Spark Ignition3-phaselarge-commercialhospital

Need service or parts for the Kohler 180RZXB?

We service every major OEM and stock genuine parts for the most common models.

Get A QuoteOr call (209) 229-1990