Caterpillar · Cat D-Series GC (Diesel)

Cat D175 GC

175 kW standby / 160 kW prime · Diesel · Liquid-cooled

175 kW diesel standby generator from Cat's GC value-engineered line. C7.1 turbocharged inline-6 with simplified controls for commercial standby.

Standby power
175 kW / 160 kW prime
Voltage options
120/208V, 277/480V, 346/600V
Frequency / Phase
60 Hz · 3-phase
Engine
Caterpillar C7.1 · 7.1L
EPA / Emissions
Tier 4 Final
standbyCommercialofficeGovernmentlight-industrialassisted-living
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Overview#

The Cat D175 GC is a 175-kilowatt diesel standby generator representing the upper range of the C7.1 inline-6 in Cat's GC value-engineered line. It delivers near-maximum output from the proven C7.1 platform for commercial buildings and institutional facilities.

Top of the C7.1 range#

At 175 kW, the D175 GC extracts near-maximum performance from the 7.1-liter inline-6. This rating suits facilities that need more than 150 kW but don't require the step up to a larger engine platform — keeping the footprint compact and maintenance costs lower.

Our service perspective#

The D175 GC runs the C7.1 at a higher output than the D125 and D150 GC models, so attention to cooling system maintenance and air filtration is important. The engine is well within its design limits at this rating, and the GC package's simplified controls keep the service experience straightforward.

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Estimate runtime for the Cat D175 GC

Adjust load percent and tank size to estimate runtime. Pre-filled with this model's spec where available.

Estimate runtime on this tank

Estimated runtime

21.2 hours(0.9 days)

Fuel consumption ≈ 9.45 GPH at 75% load. Estimate based on industry-typical 1800 RPM standby curves (≈0.07 GPH/kW at full load). Actual consumption varies by engine, ambient temperature, fuel quality, and tuning.

Frequently Asked Questions

What is the Cat D175 GC?
The D175 GC is Cat's 175 kW value-engineered diesel generator — the top rating on the C7.1 inline-6 in the GC line. It delivers the maximum power available from this engine platform in a streamlined standby package.
Should I choose the D175 GC or step up to the D200 GC?
The D200 GC also uses the C7.1 engine at a higher rating. If your load calculation is close to 175 kW, the D200 GC provides more headroom. If you're well under 150 kW actual load, the D175 GC is the better value.

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