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Caterpillar C7.1 ACERT Generator Set

The Caterpillar C7.1 ACERT is a 125 kW (156 kVA) diesel standby generator set powered by a Caterpillar C15 ACERT engine. It operates at 60 Hz. It holds about 115 L (30.4 gal) of oil and 20.8 L (5.5 gal) of coolant.

125 kW
Standby
15.2 L
Displacement
115.0 L
Oil capacity
3
Document types

How to read your Caterpillar serial & model number →

Typical fuel consumption for 125–130 kW Diesel generators →

Compare with other 125–130 kW Diesel generators →

Service parts for the C7.1 ACERT

Grouped by system, with how many of each the parts manual calls for.

Fuel system

1 required
588-2631Fuel filter (primary)see priceAmazon

Oil system

1 required
588-1049Oil filtersee priceAmazon

Prices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.

Specifications

Fueldiesel
Frequency60.0 Hz
Standby power125 kW
Standby kVA156
Prime power114 kW
EmissionsEPA ESE
Oil capacity115.0 L

Engine

Caterpillar C15 ACERT
Oil capacity115.0 L
Coolant capacity20.8 L
Displacement15.2 L
AspirationTurbocharged Air-to-Air Aftercooled
Rated speed1800 rpm

Filters for the Caterpillar C15 ACERT

8

Engine-mounted filters the filter manufacturers list for this engine family. These come from the engine, not from this generator set’s own parts list, so confirm against your serial number before ordering.

SystemFilterDescriptionCross-references
Oil filterP554005Lube Filter, Spin-On Full FlowCATERPILLAR 1R0716, CATERPILLAR 1W2660, NAPA 1792, BALDWIN BF46150-O FridayParts $41.73
Oil filterP551808Lube Filter, Spin-On Full FlowCATERPILLAR 1R1808, CATERPILLAR 1R808, NAPA 7792, BALDWIN B7299 KuduParts $80.00
Fuel filterP550625Fuel Filter, Spin-On SecondaryCATERPILLAR 1165436, CATERPILLAR 1R0762, NAPA 3640, BALDWIN BF7753 buy
Fuel filterP551311Fuel Filter, Spin-On SecondaryCATERPILLAR 1R0749, CATERPILLAR 3089679, BALDWIN BF7587, TAMROCK 019854051 KuduParts $147.00 FridayParts $151.84
Fuel / water separatorP552020Fuel Filter, Water Separator CartridgeCATERPILLAR 1110716, CATERPILLAR 3I1252, BALDWIN PF7890-10, IMPERIAL 04FS1206 buy
Fuel / water separatorP551858Fuel Filter, Water Separator Spin-OnCATERPILLAR 1335673, CATERPILLAR 1700061, NAPA 3780, BALDWIN BF1265 FridayParts $39.00 KuduParts $48.00
Coolant filterP554685Coolant Filter, Spin-On Non-ChemicalCATERPILLAR 3I1300, CATERPILLAR 4059558, NAPA 4070, MTU 0002040791 buy
Coolant filterP554073Coolant Filter, Spin-OnCATERPILLAR 0C2000, CATERPILLAR 0C2017, NAPA 4073, VERSATILE 00104040 KuduParts $40.00

Maintenance & consumables

for the Caterpillar C15 ACERT
ItemSpecCapacityPart #Interval
Air filterAir cleaner, cyclonic/paper with dust cup and service indicator—
Fuel filterWater Separator and Fuel Filter588-2631 Amazon eBay
Fuel filterengine-mounted—500 hr
Oil filterEngine Oil Filter588-1049 Amazon eBay
BatteryTwo 950 CCA maintenance-free 12V batteries with padlockable single-pole battery isolator—
BeltPoly-V accessory drive belt with autotensioner—500 hr
CoolantCoolant heater, fuse protected, thermostatically controlled, automatically disconnected on start-up; Coolant drain line with internal brass ball control valve piped to base-frame; Low coolant level shutdown; 50% coolant antifreeze with corrosion inhibitor—
Oil500-hour oil change intervals (1000-hour oil change interval option)—500 hr
Spark plug—

Compatible filters for the Caterpillar C15 ACERT — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

  • Air filter: Caterpillar 1063973 Caterpillar 612506 Caterpillar 30009151 Caterpillar 2310167 Caterpillar 3I1456

Service specifications

12
TypeItemValueUnitCondition
OtherGross Input Torque (TH55-E70)12 667N•m (9350 lb-ft)
OtherGross Input Torque (TH55-E90)12 677N•m (9350 lb-ft)
OtherRating condition (diesel 7 L and higher)99 kPa (29.31 in Hg) dry barometer, 25°C (77°F)SAE J1995 inlet air standard
OtherRating condition (diesel up to 6.6 L)100 kPa (29.5 in Hg) total barometric pressure, 1 kPa (.295 in Hg) vapor pressure, 25°C (77°F)ISO/TR14396 inlet air standard
OtherRating condition (gas)100 kPa (29.61 in Hg) and 25°C (77°F)SAE J1349 standard
OtherStall Torque Ratio (TH55-E70)2.23
OtherStall Torque Ratio (TH55-E90)2.23
PressureWS255 pump plunger load238,000lb (107,960 kg)
PressureWS273XD pump plunger load275,000lb (124 738 kg)
PressureWS305XD pump plunger load250,000lb (113 398 kg)
SpeedMaximum Input Speed (TH55-E70/TH55-E90 transmissions)1970rpm
SpeedRated Input Speed (TH55-E70/TH55-E90 transmissions)1900rpm

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Recommended fluids

FluidGradeStandardAmbientCapacityNotes
Engine oilEPA 2D 89.330-96 (fuel reference, Diesel <6.6 L, density 0,845-0,850 kg/L a 15 °C)Reference condition only, not a lubricant recommendation
Engine oillow sulfated ash oilRequired for U.S. EPA Tier 4 Final, EU Stage IV engines.
FuelUltra Low Sulfur Diesel (ULSD)Contains less than or equal to 15 parts per million sulfur (mg/kg); required for U.S. EPA Tier 4 Final, EU Stage IV engines. B20 biodiesel capability available.
Fuel35° API gravity, LHV 42 780 kJ/kg (18,390 btu/lb)SAE J1995Diesel engines 7 liter and higher; used at 29°C (84.2°F) with density 838.9 g/L
FuelEPA 2D 89.330-96EPA 2D 89.330-96Diesel engines up to 6.6 liter; density 0.845-0.850 kg/L @ 15°C (59°F); fuel inlet temperature 40°C (104°F)
Fueldry natural gas, LHV 35.54 MJ/Nm3 (905 btu/ft3)Gas ratings based on SAE J1349 standard conditions of 100 kPa (29.61 in Hg) and 25°C (77°F)

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Common questions

What size generator is the Caterpillar C7.1 ACERT?

The Caterpillar C7.1 ACERT is rated 125 kW standby (156.0 kVA).

Which engine powers the Caterpillar C7.1 ACERT?

The Caterpillar C7.1 ACERT is powered by the Caterpillar C15 ACERT engine.

Is the Caterpillar C7.1 ACERT diesel or gas?

The Caterpillar C7.1 ACERT runs on diesel.

What's the oil capacity on a Caterpillar C7.1 ACERT?

The Caterpillar C15 ACERT engine in the Caterpillar C7.1 ACERT has an oil capacity of 115.0 liters.

What is the cooling system capacity of the Caterpillar C7.1 ACERT?

The Caterpillar C7.1 ACERT cooling system holds 20.8 liters (5.5 US gallons) for the engine, per the manufacturer specification sheet.

What is the continuous rating of the Caterpillar C7.1 ACERT?

The Caterpillar C7.1 ACERT is rated 114 kW prime (142 kVA), against 125 kW standby.

What oil filter does the Caterpillar C7.1 ACERT use?

The Caterpillar C7.1 ACERT uses oil filter part number 588-1049.

Which fuel filter part number does the Caterpillar C7.1 ACERT take?

The Caterpillar C7.1 ACERT uses fuel filter part number 588-2631.

What air filter does the Caterpillar C7.1 ACERT use?

The Caterpillar C7.1 ACERT uses air filter part numbers CATERPILLAR 1063973, CATERPILLAR 612506.

Parts

21
Part #DescriptionQtySystem
10R-9925Oil Filter1Oil filter Amazon eBay
356-1428Fuel Filter1Fuel filter Amazon eBay
588-1049Engine Oil Filter1Oil filter Amazon eBay
588-2631Water Separator and Fuel Filter1Fuel filter Amazon eBay
95-ampAlternator, 95-ampAlternator Amazon eBay $237.95 FridayParts $166.73
AN500T0143STARTER MOTORStarter Amazon eBay
AN500T0144STARTER MOTOR - w/DriveStarter Amazon eBay
BXS00001-UpOil Filter1Oil filter Amazon eBay
MXS00001-UpFuel Filter1Fuel filter Amazon eBay
10R-9923Exhaust Manifold Stud1Service part / kit Amazon eBay
173-6532Radio 12V AM/FM Deluxe1Service part / kit Amazon eBay
175-6530Radio 12V AM/FMService part / kit Amazon eBay
214-7318Tool Kit and Box1Service part / kit Amazon eBay
588-0941Quick Disconnect Fittings2Service part / kit Amazon eBay
588-3621Variable Fan Hub1Service part / kit Amazon eBay
884949driftService part / kit Amazon eBay
AEHQ5645-02Parts book, CD rom1Service part / kit Amazon eBay
AEHQ5648-03735 Articulated TruckService part / kit Amazon eBay
AEHQ5679-02Parts book, paper1Service part / kit Amazon eBay
LEBE0009-00Cat NOx Reduction System and Clean Emissions Module (DOC+DPF+CRS)Service part / kit Amazon eBay
MCB3067460Piston1Service part / kit Amazon eBay

Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Available documents

Engine spec — LEGH0001-02 (Caterpillar)Engine spec — LEGH0001-03 (Caterpillar)Engine spec — YEGT3002 (Caterpillar)Reference — Caterpillar-Oil-and-Gas-Ratings-Guide-2021-03 (Caterpillar)Reference — Final+Ratings+Guide LECW2462-15 9.8.11 (Caterpillar)Reference — LECW2462-25 1 oil gas (Caterpillar)Reference — LEGH0002 (Caterpillar)Reference — Ratings Guide Port LPCW2462-15 final LR (Caterpillar)Parts manual — Cat-Tier-4-Interim-Technology (Caterpillar)

This page was generated from the 9 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.