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Home›Engines›Cummins/Onan KTA19

Cummins/Onan KTA19 Engine Engine

The Cummins/Onan KTA19 is a 18.7 L engine. It powers generator sets from Cummins/Onan, including the DFE and KtA19. It holds 45 L (11.9 gal) of oil and 90 L (23.8 gal) of coolant.

Also known as: Cummins KTA19

Part of the Cummins/Onan KTA19 engine family — 5 variants share parts & fitment.

18.7 L
Displacement
45.0 L
Oil capacity

Engine specifications

Oil capacity45.0 L
Coolant capacity90.0 L
Displacement18.7 L

Generator sets powered by this engine

2
Cummins/Onan DFECummins/Onan KtA19

Common problems

15
  • Over Current 1471
  • Low AC Voltage 2331
  • High AC Voltage 2358
  • Weak Battery 1442
  • Warning, Shutdown, and Non-Automatic lamps are not lit. Digital display shows main menu or selected menu.
    Cause: Indicates all engine systems are normal. No corrective action required
  • Warning lamp lights.
    Cause: LOW COOLANT TEMP 210 – WARNING
    Fix: Set is in standby mode but is not operating. Warning occurs when engine coolant temperature is 70° F (21° C) or lower. NOTE: In applications where the ambient temperature falls below 40°F (4°C), Low Engine Temp may be indicated even though the coolant heaters are operating.
  • Under Frequency 1448
  • Too Long in Idle 2342
  • The light will display the fault codes (active or inactive) in succession, starting with the most recent. Up to 32 (unacknowledged) fault codes can be stored in control panel memory. 213
  • Speed/Hz Match 1469
  • Speed Signal Lost 121
  • Shutdown lamp lights. 212
    Cause: Indicates engine has overheated (coolant temperature has risen above the shutdown trip point: 223° F – standby / 215° F – primary) or the coolant level is low. Allow engine to cool down completely before proceeding with the following checks:
    Fix: A. Check coolant level and replenish if low. Look for coolant leakage and repair if necessary. b. Check for obstructions to cooling airflow and correct as necessary. c. Check fan belt and repair or tighten if necessary. d. Reset control and restart after locating and correcting problem. Contact an authorized service center if none of the above.
  • Shutdown After Battle Short 1123
  • Short Circuit 1445
  • Remote Emergency Stop 1434

Compiled from service & troubleshooting documentation across every generator set that uses the Cummins/Onan KTA19.

Maintenance schedule

ItemSpecCapacityPart #Interval
Air filterEvery 500 hours or as needed—500 hr find
Fuel filter— find
Oil filterEvery 100 hours or as needed—100 hr find
Belt— find
CoolantStandard radiator cooling system capacity90.0 L—
Coolant filter— find
Oil45.0 L—

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Repair guides

32

Step-by-step procedures compiled from the Cummins/Onan service manual for this engine.

Parts cataloged across the Cummins/Onan KTA19 family

35
Part #DescriptionCategory
FP-IFKKTA19KTA19 In-Frame Kit w/upper gasket set & oil pan gasketgasket
M-4352578Upper Gasket Setgasket
3096680Piston STC 13.8:1 Ratioother_service
3096681Piston KT Series 15.5:1 Ratioother_service
3096682Piston KTA Series 14.5:1 Ratioother_service
3096683Piston 13.5:1 Ratioother_service
3096684Piston KTA 15.7:1 Ratioother_service
3096685Piston STC 13.9:1 Ratioother_service
3628731Piston STC Kitother_service
3630913Piston KTA-50-G7other_service
3631241Piston Kit STC 13.9:1 Ratioother_service
3631242Piston Kit 13.5:1 Ratioother_service
3631243Piston Kit KTA 15.7:1 Ratioother_service
3631244Piston Kit KTA Series 14.5:1 Ratioother_service
3631245Piston Kit KT Series 15.5:1 Ratioother_service
3631246Piston Kit STC 13.8:1 Ratioother_service
3803530Piston Assembly STCother_service
3804747Piston Kit KTA-50-G7other_service
3804885Piston KTA-50-G8/G9other_service
4089847Piston Kit GTA38/19other_service
4090013Piston Kit KTA-38-M2other_service
4090029Piston Kit QSK19CEother_service
4090181Piston GTA38/19other_service
4097889Piston KTA-38-M2other_service
4910463Piston QSK19R/Mother_service
4910465Piston QSK Seriesother_service
4916177Piston GTA/GQSK19other_service
4918058Piston QSK19CEother_service
4922319Piston QSK19Cother_service
4955233Piston Kit QSK19R/Mother_service
4955235Piston Kit QSK Seriesother_service
4955236Piston Kit QSK19Cother_service
4955238Piston Kit GTA/GQSK19other_service
KTA19Engine Modelother_service
DM-3006737Crankshaft Rear Seal - KTA19, NTA370, NTA420seal

Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.

Common questions

What is the oil capacity of the Cummins/Onan KTA19?

The Cummins/Onan KTA19 engine has an oil capacity of 45.0 liters.

What is the displacement of the Cummins/Onan KTA19?

The Cummins/Onan KTA19 has a displacement of 18.7 liters.

Which generators use the Cummins/Onan KTA19 engine?

The Cummins/Onan KTA19 powers 2 generator set(s), including Cummins/Onan DFE, Cummins/Onan KtA19.

What is a common problem with the Cummins/Onan KTA19 engine?

A commonly reported issue on generators using the Cummins/Onan KTA19 is: Over Current.