Moteur Cummins QSK19-G4 pour groupe électrogène — Puissance principale de 574 kW, CCEC (Original)

What It Is

The QSK19-G4 is an 18.9L inline 6-cylinder diesel G-Drive engine manufactured at Chongqing Cummins (CCEC), a joint venture 50% owned by Cummins Inc. USA. Rated at 574kW prime / 634kW standby at 1500RPM, it runs the Cummins MCRS fuel system at 1600 bar injection pressure, CTT HX83 turbocharger, and air-to-air charge cooling. Compression ratio is 15.0:1 (CPL 4270). EPA Tier 2 compliance is achieved through in-cylinder technology — no exhaust after-treatment required.

Where It Is Used

Prime and standby power generation in data centers, mining sites, marine auxiliary, telecom infrastructure, and OEM genset manufacturing — wherever continuous-duty load, long overhaul intervals, and parts traceability are operating requirements.

Buyer Guidance

Replacing an existing uni: Verify your engine carries CPL 4270 before ordering parts. G13/G14 variants run at 15.8:1 compression ratio; parts are not cross-compatible.
Specifying for a new 60Hz build: The G4 produces 559kW at 1800RPM. If your genset is rated above this, the QSK19-G5 (608kW at 1800RPM) is the correct selection. Full series comparison in Module 5.
Sourcing at volume: Lead time 15–30 working days. Standard export documentation included. Wholesale terms in Module 10.

QSK19-G4 Technical Specifications — Full Data Reference

General Specifications

Power Ratings

Dimensions & Weight

Installation Data

Standard Scope of Supply

Air intake manifold · Standard air filter · Air-to-air charge air cooler · Exhaust manifold · CTT HX83 turbocharger · Exhaust elbow · 24V starter motor · Starter relay · Charging alternator · Oil pump · Oil filter · Water pump · Engine fan · Standard radiator · Fuel transfer pump · High-pressure fuel pump · Fuel filter · Engine fuel shut-off solenoid · Flywheel (FW4023) · Standard flywheel housing

QSK19 G-Drive Series — Full Variant Comparison & Selection Guide

QSK19 G-Drive Variant Matrix

Three Selection Decisions the Table Above Answers

① 50Hz at full output → G4 or G11?

Both run at 1500RPM with TAA aspiration and 15.0:1 compression ratio. The G11 delivers 606kW versus the G4's 574kW — a 32kW difference at the same displacement and configuration code (D193103GX03). The G11 carries a higher power calibration (FR-4769 vs FR-4580), meaning the difference is in ECM tuning and fuel delivery mapping, not mechanical build. For genset ratings at or below 574kW prime, the G4 is the correct selection. Above that threshold, specify the G11.

② 60Hz application → G4 or G5?

The G4 produces 559kW at 1800RPM — below its 574kW 50Hz prime rating. The QSK19-G5 is calibrated specifically for 1800RPM operation and delivers 608kW at that speed. If your genset nameplate rating exceeds 559kW at 60Hz, the G4 will not meet it. Specify the G5.

③ Lower output requirement → G12, G13, or G14?

Note the compression ratio shift at G13 and G14: 15.8:1 versus 15.0:1 in G4/G5/G11/G12. This is not a minor calibration difference — it is a mechanical change affecting piston, injector, and combustion chamber specifications. Parts between the 15.0:1 group (G4/G5/G11/G12) and the 15.8:1 group (G13/G14) are not cross-compatible. If you are sourcing a replacement engine or parts for a G13/G14 unit, do not reference G4 part numbers.

Parts Compatibility Boundary — Critical Reference

QSK19-G4 Replacement & Fitment Guide — Before You Order

Step 1 — Confirm CPL Code

The QSK19-G4 carries CPL 4270. This code determines which pistons, injectors, turbocharger, and overhaul kits are correct for your unit. Find it on the engine nameplate. If the nameplate is damaged, provide the engine serial number; we will retrieve the CPL before any order is placed.

Do not order parts by model name alone. Two engines both labeled "QSK19" may carry different CPL codes and require different components.

Step 2 — Verify Compression Ratio Group

Parts between these two groups are not cross-compatible regardless of external appearance.

Step 3 — Confirm Physical Interface

For drop-in engine replacement, confirm the following installation interfaces match your existing genset frame before ordering:

If your genset was originally built around a QSK19-G4 (CPL 4270), all parameters above are identical on a replacement unit — direct swap confirmed.
Not Sure? Send Us Your engine nameplate.
If your CPL code is not 4270, or the original engine model is unclear, send us a nameplate photo before ordering. We confirm compatibility within one business day.

QSK19-G4 Parts & Service — Key Components, Service Intervals, and Sourcing

Parts Identification — Always Reference CPL 4270

All genuine Cummins replacement parts for the QSK19-G4 are indexed to CPL 4270 / Configuration D193103GX03. When contacting any supplier — including us — provide both the CPL code and engine serial number. This eliminates substitution errors, particularly for fuel system and internal components where dimensional differences between variants are not visible externally.

High-Value Component Reference

Service Interval Reference

Intervals above are reference guidelines. Always follow the Cummins Operation and Maintenance Manual for CPL 4270 as the authoritative source.

Quality Tiers — What You Are Buying

We supply Genuine Cummins OEM parts as standard. OEM-equivalent options are available on request for specific line items — confirm with our team before ordering.

Parts We Stock for QSK19-G4 (CPL 4270)

Turbocharger (CTT HX83) · Fuel injectors · Overhaul kits (in-frame & complete) · Cylinder head assembly · Fuel filter set (stage 1 + stage 2) · Oil filter · Water filter · Piston & liner kit · Gasket & seal sets · Starter motor (24V) · Charging alternator (24V)
For items not listed, contact us with CPL 4270 and the Cummins part number. We will confirm availability and lead time within one business day.

QSK19-G4 Procurement & Logistics — Lead Time, Export Documentation

Order Reference Information

The engine dataplate contains all identifiers needed to confirm your order — model, CPL code, configuration, and serial number. Send us a photo of your dataplate and we will verify the specification before issuing a quotation.
If you are ordering a new unit (not a replacement), reference: QSK19-G4 · CPL 4270 · 1500RPM · 574kW prime.

Lead Time

Standard lead time is 15–30 working days from order confirmation and deposit receipt. Lead time covers factory allocation, pre-shipment inspection, and export preparation. For time-sensitive projects, contact us with your required delivery date before placing an order, we will confirm feasibility against current inventory status.

Packaging & Shipping Specifications

Packing Size (L × W × H): 1695 × 985 × 1723 mm
Gross Weight: 1900 kg
Packing Type: Wooden export crate, seaworthy standard
Shipping Mode: FCL sea freight (standard) · LCL available for parts orders
Engine is secured within the crate to prevent movement during transit. Moisture barrier and desiccant included as standard. Pre-shipment photos provided prior to container loading.

Standard Export Documentation Package

Included with every engine shipment as standard:
Commercial invoice · Packing list · Bill of lading · Certificate of origin (CO) · Engine test report · nameplate photo record
Additional documents available on request: Form E (ASEAN preferential tariff) · Pre-shipment inspection certificate (SGS or equivalent) · Insurance certificate

Payment Terms

T/T (Bank Transfer): 30% deposit on order confirmation; 70% balance before shipment
L/C (Letter of Credit): At sight L/C accepted; confirm terms with our team before issuance
Other payment arrangements are considered on a case-by-case basis for established accounts. Contact us to discuss.

QSK19-G4 Warranty & After-Sales Support — Coverage, Claims, and Technical Assistance

Warranty Coverage

All QSK19-G4 engines supplied by us are genuine CCEC Cummins units and carry a 12-month warranty from the date of commissioning, covering manufacturing defects in materials and workmanship under normal operating conditions.

What the Warranty Does Not Cover

• Damage resulting from incorrect installation, improper commissioning, or failure to follow the Cummins Operation and Maintenance Manual for CPL 4270
• Wear items consumed during normal operation: filters, belts, coolant, lubricants
• Damage caused by contaminated fuel, incorrect lubricant specification, or coolant system neglect
• Modifications or repairs carried out by non-authorized personnel during the warranty period
• Transit damage not reported within 3 working days of delivery — inspect all shipments on receipt and document any damage before signing

Warranty Claim Process

① Document the fault — Record engine serial number, CPL code, operating hours, fault symptoms, and photographs of the affected area.
② Notify us within warranty period — Submit documentation via email or WhatsApp. Include engine serial number and CPL 4270 in the subject line.
③ Technical review — Our engineering team reviews the submission within 2 business days and advises on root cause and next steps.
④ Resolution — Depending on fault assessment: replacement parts dispatched, repair support coordinated, or engine exchange arranged. Resolution path confirmed in writing before any action is taken.

After-Sales Support

Technical enquiries: Email / WhatsApp — 1 business day response
Parts identification (CPL 4270): Available on request
O&M Manual & wiring diagrams: Available on request
Remote fault diagnosis: Email or video call

Transit Damage Protocol

Photograph damage before unpacking · Note on delivery receipt before signing · Notify us within 3 working days with photos · Do not commission a damaged unit before completing the damage report.

QSK19-G4 Wholesale & Distribution — Volume Sourcing and Supply Terms

Supply Position

Sourced directly from CCEC Chongqing with no intermediary agents. This keeps pricing at factory-direct levels and lead time (15–30 working days) consistent regardless of order quantity.

Volume Pricing Structure

Pricing is provided on a per-inquiry basis and varies with order quantity, payment terms, and delivery schedule. The following structure applies as a reference framework:

Formal quotation issued within one business day of inquiry. Provide: quantity, required delivery window, destination port, and preferred payment term.

Distributor Arrangements

We work with regional distributors and genset manufacturers on a case-by-case basis. There is no formal published distributor program — arrangements are structured around order volume, market territory, and supply consistency requirements specific to each partner.

If you are evaluating a distribution arrangement for the QSK19-G4 or the broader CCEC Cummins G-Drive range, contact us directly. Initial discussions cover: territory, annual volume estimate, required lead times, and documentation requirements. No minimum commitment is required to begin the conversation.

Parts Wholesale

Volume sourcing for QSK19-G4 parts (CPL 4270) follows the same direct-supply model. Overhaul kits, turbochargers, injector sets, and filter packages are available at volume rates. Provide part numbers or component descriptions with quantity and we will confirm availability and pricing within one business day.

QSK19-G4 Frequently Asked Questions

Q1: What is the difference between the QSK19-G4 and QSK19-G11?

Both run at 1500RPM with TAA aspiration and 15.0:1 compression ratio. The G11 delivers 606kW prime versus the G4's 574kW — the difference is ECM calibration and fuel delivery mapping, not mechanical build. Both share configuration code D193103GX03. Specify G4 for genset ratings at or below 574kW prime; specify G11 above that threshold.

Q2: Can the QSK19-G4 be used in a 60Hz generator set?

Yes, but with a power reduction. The G4 produces 559kW at 1800RPM versus 574kW at 1500RPM. If your 60Hz genset nameplate rating exceeds 559kW, the G4 will not meet it — specify the QSK19-G5, which is calibrated for 1800RPM and delivers 608kW. If your rating is at or below 559kW, the G4 is a valid selection.

Q3: What is CPL 4270 and why does it matter for parts ordering?

CPL (Control Parts List) 4270 is the Cummins engineering identifier that defines the exact specification of your QSK19-G4 — including piston dimensions, injector calibration, turbocharger spec, and overhaul kit composition. Two engines with the same model name but different CPL codes require different parts. Always provide CPL 4270 alongside the engine serial number when ordering any component. The CPL code is stamped on the engine dataplate.

Q4: Are parts from QSK19-G13 or G14 compatible with the QSK19-G4?

No. The G13 and G14 run at 15.8:1 compression ratio versus 15.0:1 in the G4. This is a mechanical difference affecting piston geometry, combustion chamber dimensions, and injector specification. Parts between the 15.0:1 group (G4, G5, G11, G12) and the 15.8:1 group (G13, G14) are not cross-compatible. Do not substitute parts across these groups regardless of external appearance.

Q5: Is the CTT HX83 turbocharger interchangeable with turbos from other Cummins engines?

No. The HX83 is sized specifically for the QSK19's displacement and output range. It is not interchangeable with turbochargers used on other Cummins families — for example, the HX55 used on KTA19 or the HX60W used on KTA50. When sourcing a replacement turbocharger for your QSK19-G4, specify HX83 and confirm against CPL 4270.

Q6: What is the relationship between CCEC and Cummins USA?

Chongqing Cummins Engine Company (CCEC) is a manufacturing joint venture between Cummins Inc. USA and Chongqing Machinery & Electric Co., with Cummins holding 50% equity. Engines produced at CCEC are genuine Cummins products — manufactured under Cummins engineering standards, using Cummins-specified components, and carrying full Cummins part number traceability. They are not domestic copies or licensed reproductions.

Q7: What fuel consumption rate should I expect from the QSK19-G4?

At rated prime power (574kW) and 1500RPM, the QSK19-G4 achieves 38.8 g/kWh. At 1800RPM, the rate improves slightly to 37.8 g/kWh. These figures reflect full-load operation; actual consumption varies with load factor and ambient conditions. For generator set fuel burn calculations, apply these figures against your expected average load factor.

Q8: What documents are included with each engine shipment?

Standard export documentation includes: commercial invoice, packing list, bill of lading, certificate of origin, engine test report, and nameplate photo record. Form E (ASEAN preferential tariff), SGS pre-shipment inspection certificate, and insurance certificate are available on request. Confirm your documentation requirements before order confirmation.

Q9: How do I identify my engine's CPL code if the dataplate is damaged?

The CPL code can be retrieved from the engine serial number through a Cummins dealer or authorized service network. Provide us with the engine serial number and we will assist with CPL identification before any parts order is placed.

Q10: What is the standard warranty period and what does it cover?

All QSK19-G4 engines we supply carry a 12-month warranty from commissioning date, covering manufacturing defects in materials and workmanship. Wear items, damage from improper installation or maintenance, and transit damage not reported within 3 working days of delivery are excluded. Full warranty terms are in Module 9.

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