Used Caterpillar Diesel Generators for Sale

Used Caterpillar diesel generators sell for roughly $4,500 for small Olympian units up to $269,000 for low-hour 1000 kW gensets like the C32. Electrical Trader lists CAT XQ towables, 3500-series industrial sets, and Olympian standby units on consignment from U.S. sellers, many with documented hours and load-bank history.

Updated automatically from live inventory · Sold on consignment · Freight quotes available

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4 units · pulled live from inventory
Caterpillar Olympian D100P2 100kW / 125 kVA portable diesel generator, multi-voltage, used (2002) — Electrical Trader
100kW / 125kVA CAT Olympian Portable Diesel Generator – Multi-Voltage (2002)
$32,000
Caterpillar Olympian D100P1 100kW diesel generator, 480V 3-phase, used (2001) — Electrical Trader
100kW CAT Olympian Diesel Generator – 480V 3 Phase (2002, Low Hours)
$18,000
2016 Caterpillar C32 1000kW diesel generator set, 480V 3-phase, used — Electrical Trader
2016 Caterpillar C32 1000kW Diesel Generator Set – 480V 3-Phase – 42.6 Hours
$269,000
Caterpillar 3516B 24MW diesel power plant package, 13.8kV complete generation station, used (2001) — Electrical Trader
24MW CAT 3516B Diesel Power Plant Package 13.8kV Complete Generation Station
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Need a different spec?

Tell us the kW rating, voltage, and fuel type you need. We'll match you with consignment inventory before it's listed publicly — or source it through our seller network.

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What to Know Before Buying a Used Caterpillar Generator

Verify the engine family

XQ rentals (3406, C7-C18), 3500-series industrial, and Olympian/Perkins-powered units have very different parts costs and rebuild economics. The model number tells you the engine.

Hours in context

CAT engines are built for overhaul: a 3508 with 10,000 hours and records can outlast a neglected 2,000-hour unit. Ask for maintenance history, not just the hour meter.

Rental-fleet provenance

XQ units from dealer rental fleets (e.g. Warren CAT) are usually fleet-maintained with records - often the best value in the used market.

Emissions tier & DEF

Tier 4 Final units need DEF; some Tier 4i units don't. Older Tier II gear may be limited to standby permitting. Match the tier to your application.

EMCP controller generation

EMCP 2 parts are getting scarce; EMCP 3/4 units integrate with modern monitoring. Factor controller age into price.

Genuine vs. rebadged

Olympian and Roughneck units are CAT-family brands with different alternators and warranties than industrial CAT gensets. Know which you're buying.

Frequently Asked Questions

How much does a used CAT generator cost?
Small Olympian/standby units start around $4,500; towable XQ200/XQ350 rentals run $35,000-$150,000; industrial 1000 kW+ sets (3508, C32) range $99,900-$269,000 depending on hours.
Are CAT rental-fleet generators a good buy?
Usually yes - dealer-maintained XQ units come with service records and have been load-tested regularly. They're priced above private-party units for that reason.
Can I get parts and service for older CAT gensets?
CAT's dealer network supports most legacy engines (3406, 3500-series) with parts availability measured in decades. Controller electronics are the main aging risk.
Do you have the model I need in stock?
Inventory turns over constantly - if the grid above doesn't show your spec, submit the model and kW through the Power Quote form and it will be matched against available consignment listings across our seller network.