Cummins L9 370H
Built: 2017-2018 · Series: L9
More machines from model year 2017
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
Cummins L9 – the 8.9-litre successor to the ISL9 since 2017: 260 to 450 hp for refuse trucks, fire apparatus, buses and distribution trucks
The L9 is the EPA 2017 generation of Cummins' 8.9-litre in-line six – the direct successor to the ISL9, with which it shares block, bore and stroke, but with new injection, turbocharger and a more compact aftertreatment that combines particulate filter and SCR in one module. Like its predecessor it is the standard engine for refuse trucks, fire and rescue apparatus, coaches and city buses, concrete mixers and distribution trucks in North America; Paccar lists it as the PX-9, and a natural-gas version exists as the L9N. Since 2024 it has belonged to the 'HELM' platform, which uses the same base engine for diesel, natural gas and hydrogen.
Read on 3 more paragraphs
The number in the name is the output in hp; suffixes such as EV, H or HS denote torque curves and calibrations. The register lists 23 versions with 260 to 450 hp at 1,900 to 2,200 rpm and 860 to 1,250 lb-ft (1,166 to 1,695 Nm) of torque between 1,200 and 1,400 rpm; all with 8,900 cm³, direct injection and turbocharging, certified for model years 2017 to 2026, predominantly for bodied trucks ('Vocational').
Compared with the ISL9, torque at the top end rose to 1,250 lb-ft and the torque speed fell to 1,200 rpm – Cummins' response to automated transmissions and the demand for low revs in city traffic.
On used engines in refuse and city-bus duty, the regeneration cycles of the particulate filter and the condition of the SCR dosing are the checkpoints; the variable-geometry turbocharger and the EGR cooler are the typical wear parts of this engine class.
Sources: SpecCodex register, model data: Cummins L9 (EPA-Zertifizierungsdaten), Cummins L9 (manufacturer), EPA-Zertifizierungsdaten Motoren
Technical data
Engine
| Engine code | 4758; FR95185correct |
|---|---|
| Engine family | JCEXH0540LAXcorrect |
| Engine families | JCEXH0540LAX; HCEXH0540LAXcorrect |
| Fuel | 7-15 ppm ultra low sulfur dieselcorrect |
| Rated output | 275.9 kW (= 370 hp)correct |
| Rated speed | 1,900 rpmcorrect |
| Maximum torque | 1,250 ft·lbfcorrect |
| Speed at max. torque | 1,400 rpmcorrect |
| Displacement | 8,900 cm³correct |
| Displacement | 8.9 lcorrect |
| Operating cycle | dieselcorrect |
| Injection | direct injectioncorrect |
| Aspiration | turbochargedcorrect |
Origin and approval
| Version | 4758; FR95185correct |
|---|---|
| Built from | 2017correct |
| Built to | 2018correct |
| Model year from | 2017correct |
| Model year to | 2018correct |
| Sales region | USA certificationcorrect |
Other data
| Application | Vocationalcorrect |
|---|
Frequently asked questions
How much power does the Cummins L9 370H have?
The Cummins L9 370H delivers 276 kW.
What engine does the Cummins L9 370H have?
8,900 cm³ displacement, 7-15 ppm ultra low sulfur diesel.
When was the Cummins L9 370H built?
Production years: 2017-2018.
What to check before buying
- Match the data plate against the order: frame size, mounting and rating have to agree.
- For used units, ask about winding condition and bearing play.
- Ask about parts availability for this series — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
Request a quote →
We ask the suppliers and come back with price and lead time.
Request spare parts →
This page carries 23 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
Missing a figure you were looking for? Report it →
Know this machine better? Have a photo, a manual, or know that a figure is wrong? Add it to the register →
Other models in this series
Sources: US EPA — engine certification data (retrieved August 2026) · How we check the data
Diesel engine in 3D section
Turn the model, look inside and click an assembly — each one is explained.
Parts for this engine (68)
Manufacturer part numbers from the official EPA documentation. No prices or availability — those come from the supplier.
| Part number | Description | Manufacturer |
|---|---|---|
| 4384561 | Aftertreatment Temperature Sensor | Cummins |
| 4384562 | Aftertreatment Temperature Sensor | Cummins |
| 4384563 | Aftertreatment Temperature Sensor | Cummins |
| 4384564 | Aftertreatment Temperature Sensor | Cummins |
| 4384565 | Aftertreatment Temperature Sensor | Cummins |
| 4384566 | Aftertreatment Temperature Sensor | Cummins |
| 4384567 | Aftertreatment Temperature Sensor | Cummins |
| 4384568 | Aftertreatment Temperature Sensor | Cummins |
| 4384569 | Aftertreatment Temperature Sensor | Cummins |
| 4384570 | Aftertreatment Temperature Sensor | Cummins |
| 4384571 | Aftertreatment Temperature Sensor | Cummins |
| 4384572 | Aftertreatment Temperature Sensor | Cummins |
| 4384573 | Aftertreatment Temperature Sensor | Cummins |
| 4384574 | Aftertreatment Temperature Sensor | Cummins |
| 4384575 | Aftertreatment Temperature Sensor | Cummins |
| 4384576 | Aftertreatment Temperature Sensor | Cummins |
| 4384577 | Aftertreatment Temperature Sensor | Cummins |
| 4384578 | Aftertreatment Temperature Sensor | Cummins |
| 4384579 | Aftertreatment Temperature Sensor | Cummins |
| 4384580 | Aftertreatment Temperature Sensor | Cummins |
| 4354162 | Ammonia Slip Catalyst | Cummins |
| 5698454 | Compressor Inlet Combo Sensor;Compressor Inlet Temp/Pres Sensor (TBAP) | Cummins |
| 2897332 | Compressor Inlet Temperature | Cummins |
| 2897334 | Compressor Outlet Pressure Sensor;Comp out pressure sensor | Cummins |
| 5698456 | Compressor Outlet Pressure Sensor;BarometricPressureSensor;Comp out pressure sensor | Cummins |
| 4954905 | Coolant Temperature Sensor;Coolant Temp Sensor;Coolant Temperature Sensor;Engine Out NOx Sensor 2;Coolant Temperature Sensor;Oil Temperature Sensor;Oil Temperature Sensor;Coolant Temperature Sensor;Coolant temp sensor | Cummins |
| 4354153 | Diesel Oxidation Catalyst | Cummins |
| 4388221 | Diesel Particulate Filter | Cummins |
| 2871960 | Diesel Particulate Filter Pressure | Cummins |
| 5297551 | EGR Cooler | Cummins |
| 5529388 | EGR Cooler | Cummins |
| 4928594 | Exhaust Manifold Pressure;EGR Orifice Pressure Sensor;EGR pressure sensor | Cummins |
| 5271583 | EGR Valve | Cummins |
| 5483010 | EGR Valve | Cummins |
| 2872277 | Camshaft Position Sensor;Engine Crankshaft;Camshaft Position Sensor;Crankshaft Position Sensor;Engine Camshaft;Engine Camshaft Position Sensor;Engine Camshaft | Cummins |
| 4384413 | Engine Control Module | Cummins |
| 2872279 | Crankshaft Position Sensor;Camshaft Position Sensor;Crankshaft Position Sensor;Crankshaft Position Sensor;Camshaft Position Sensor;Camshaft Position Sensor;Engine Camshaft;Engine Crankshaft;Engine Crankshaft;Engine Crankshaft Position Sensor;Engine Crankshaft Position Sensor;Engine Crankshaft | Cummins |
| 4326873 | Engine Out NOx Sensor 1;Engine Out NOx Sensor | Cummins |
| 2872858 | EGR Out Temperature Sensor;Intake Manifold Temp Sensor;EGR Out Temperature Sensor;EGR Out Temperature Sensor;Intake Manifold Temp Sensor;EGR temp sensor | Cummins |
| 4307166 | Exhaust Gas Recirculation Pressure | Cummins |
| 6419882 | Exhaust Gas Recirculation Pressure | Cummins |
| 4307021 | Fuel Injection Pump | Cummins |
| 4384224 | Fuel Injection Pump | Cummins |
| 5491997 | Fuel Injection Pump | Cummins |
| 5594422 | Fuel Injection Pump | Cummins |
| 2872331 | Fuel Injector | Cummins |
| 2897581 | Fuel Pressure | Cummins |
| 4326861 | Tailpipe NOx Sensor | Cummins |
| 4326864 | Tailpipe NOx Sensor | Cummins |
| 4326867 | Engine Out NOx Sensor | Cummins |
| 4326868 | Tailpipe NOx Sensor | Cummins |
| 4326869 | Tailpipe NOx Sensor | Cummins |
| 4326872¿ | NOx Sensor Selective Catalytic Reduction | Cummins |
| 4326874 | Tailpipe NOx Sensor | Cummins |
| 5491693 | Oil Pressure Sensor;Oil pressure sensor | Cummins |
| 3796002 | Turbocharger | Cummins |
| 5327341 | Turbocharger | Cummins |
| 5328076 | Turbocharger | Cummins |
| 5350996 | Turbocharger | Cummins |
| 5501323 | Turbocharger | Cummins |
| 5501325 | Turbocharger | Cummins |
| 5501328 | Turbocharger | Cummins |
| 5604718 | Turbocharger | Cummins |
| 5640477 | Turbocharger | Cummins |
| 5640479 | Turbocharger | Cummins |
| 5640482 | Turbocharger | Cummins |
| 5640709 | Turbocharger | Cummins |
| 6324386 | Turbocharger | Cummins |
Source: EPA HD Engines 2015–Present
Enquire about these parts