Engine Cross Reference

Generator Engine Model Cross Reference 8–4,000 kVA

Search, filter, and compare engine models across Cummins, Perkins, Weichai, and Yuchai matched to 8–4,000 kVA gensets. Identify the engine in your generator, compare options, and download the complete cross reference chart as Excel, CSV, or PDF.

Cummins · Perkins · Weichai · Yuchai

Engine model lookup

Parts & filter matching

Search & Filter Database

Download the complete cross reference chart as Excel, CSV, or PDF.

Shandong Huali

Factory‑Direct Genset Manufacturer

Diesel gensets from 8 to 4,000 kVA on Cummins, Perkins, Weichai, and Yuchai engines. ISO9001, CE, CCC certified.

25+Years experience

8–4,000kVA range

4Engine brands

Identify Confirm What You Have

Find out exactly which engine is in a set you already own. Match the genset model or the engine stamp to the cross reference table.

Compare Options at Every kVA

See which engine options deliver the same kVA in a new build. Compare Cummins, Perkins, Weichai, and Yuchai side by side.

Service Parts & Maintenance

Match filters, injectors, and service kits to the correct engine family. The cross reference connects to the parts table.

Why This Mapping Is Hard to Find

Engine manufacturers like Cummins and Perkins publish detailed catalogs of their own engines, but no single source maps generator set models to engines across multiple brands. A fleet with mixed brands, or a buyer comparing a Cummins option against a Weichai option, has to open four separate catalogs and align them by kVA. That is the gap this page closes — and the reason we publish a downloadable cross reference chart rather than a static article.

Built for Engineers & Maintenance Teams

One Database, Four Engine Brands

Full 8–4,000 kVA Range

Every kVA band from small home backup to large data center and industrial prime power.

Four Major Brands

Cummins, Perkins, Weichai, and Yuchai — the engines Huali fits across the full range.

Searchable & Filterable

Filter by brand, by kVA band, or search for a genset model or engine model. Instant results.

Downloadable Chart

Export the full cross reference as Excel, CSV, or PDF. Keep it with your equipment documents.

Brand kVA Band

Showing 44 matches

8–30 kVA — Small Backup & Residential

Brand	Engine Model	Displacement	Cyl.	Aspiration	Governor	Standby kVA	Prime kVA
Cummins	4B3.9 / 4BT3.9	3.9 L	4	Turbocharged	Mechanical	8–15	6–12
Perkins	403D-11 / 404D-22	1.1–2.2 L	3–4	Naturally Aspirated	Mechanical	8–15	6–12
Weichai	WP2.1 / WP3.2	2.1–3.2 L	4	Turbocharged	Electronic	8–15	6–12
Yuchai	YC4A / YC4D	4.2–4.8 L	4	Turbocharged	Mechanical	8–15	6–12
Cummins	4BT3.9-G1	3.9 L	4	Turbocharged	Mechanical	20–30	16–24
Perkins	1103A-33G	3.3 L	4	Turbocharged	Mechanical	20–30	16–24
Weichai	WP4.1	4.1 L	4	Turbocharged	Electronic	20–30	16–24
Yuchai	YC4D	4.2 L	4	Turbocharged	Mechanical	20–30	16–24

40–120 kVA — Small Commercial & Light Industrial

Brand	Engine Model	Displacement	Cyl.	Aspiration	Governor	Standby kVA	Prime kVA
Cummins	4BTA3.9-G2 / 6BT5.9	3.9–5.9 L	4–6	Turbocharged	Mechanical	40–60	32–48
Perkins	1104A-44TG1	4.4 L	4	Turbocharged	Mechanical	40–60	32–48
Weichai	WP6	6.2 L	6	Turbocharged	Electronic	40–60	32–48
Yuchai	YC6B	6.5 L	6	Turbocharged	Mechanical	40–60	32–48
Cummins	6BT5.9-G1 / 6CT8.3	5.9–8.3 L	6	Turbocharged	Mechanical	80–120	64–96
Perkins	1104A / 1106A	4.4–6.6 L	4–6	Turbocharged	Mech / Elec	80–120	64–96
Weichai	WP6 / WP7	6.2–7.2 L	6	Turbocharged	Electronic	80–120	64–96
Yuchai	YC6J	6.5 L	6	Turbocharged	Mechanical	80–120	64–96

150–330 kVA — Commercial & Industrial Prime

Brand	Engine Model	Displacement	Cyl.	Aspiration	Governor	Standby kVA	Prime kVA
Cummins	6CTAA8.3-G2	8.3 L	6	Turbocharged	Mechanical	150–200	120–160
Perkins	1106A-70TAG2	6.6 L	6	Turbocharged	Electronic	150–200	120–160
Weichai	WP10 / WP12	10–12 L	6	Turbocharged	Electronic	150–200	120–160
Yuchai	YC6G / YC6K	7.8–10.3 L	6	Turbocharged	Mech / Elec	150–200	120–160
Cummins	6LTAA8.9 / NT855	8.9–14 L	6	Turbocharged	Mechanical	250–330	200–264
Perkins	1306C-E87TAG4	8.7 L	6	Turbocharged	Electronic	250–330	200–264
Weichai	WP13	13 L	6	Turbocharged	Electronic	250–330	200–264
Yuchai	YC6K	10.3 L	6	Turbocharged	Electronic	250–330	200–264

400–800 kVA — Heavy Industrial & Infrastructure

Brand	Engine Model	Displacement	Cyl.	Aspiration	Governor	Standby kVA	Prime kVA
Cummins	NTA855-G7	14 L	6	Turbocharged	Mechanical	400–500	320–400
Perkins	2206C-E13TAG2	12.9 L	6	Turbocharged	Electronic	400–500	320–400
Weichai	WD series / 12M33	12–33 L	6–12	Turbocharged	Electronic	400–500	320–400
Yuchai	YC6T / YC6C	9.7–15 L	6	Turbocharged	Mech / Elec	400–500	320–400
Cummins	KTA19-G3	19 L	6	Turbocharged	Mechanical	600–800	480–640
Perkins	2506C	15.2 L	6	Turbocharged	Electronic	600–800	480–640
Weichai	6160A	16 L	6	Turbocharged	Electronic	600–800	480–640
Yuchai	YC6C	15 L	6	Turbocharged	Electronic	600–800	480–640

1,000–2,000 kVA — Data Center & Large Plant

Brand	Engine Model	Displacement	Cyl.	Aspiration	Governor	Standby kVA	Prime kVA
Cummins	KTA38-GA	38 L	12	Turbocharged	Electronic	1000–1250	800–1000
Perkins	2806C	18.1 L	6	Turbocharged	Electronic	1000–1250	800–1000
Weichai	16M33	33 L	16	Turbocharged	Electronic	1000–1250	800–1000
Yuchai	YC12V / YC16V	20–27 L	12–16	Turbocharged	Electronic	1000–1250	800–1000
Cummins	KTA50 / QSX60	50–60 L	16–18	Turbocharged	Electronic	1500–2000	1200–1600
Perkins	4006-23TAG2A	23 L	6	Turbocharged	Electronic	1500–2000	1200–1600
Weichai	12M33	33 L	12	Turbocharged	Electronic	1500–2000	1200–1600
Yuchai	YC16VC	27 L	16	Turbocharged	Electronic	1500–2000	1200–1600

2,500–4,000 kVA — Ultra‑Large & Utility Scale

Brand	Engine Model	Displacement	Cyl.	Aspiration	Governor	Standby kVA	Prime kVA
Cummins	QSK60 / QSK95	60–95 L	18–16	Turbocharged	Electronic	2500–4000	2000–3200
Perkins	4012 / 4016	23–32 L	12–16	Turbocharged	Electronic	2500–4000	2000–3200
Weichai	16M33	33 L	16	Turbocharged	Electronic	2500–4000	2000–3200
Yuchai	YC16V / YC16VC	27–32 L	16	Turbocharged	Electronic	2500–4000	2000–3200

Footnote: This is a representative generator engine cross reference, not a guarantee that every engine listed is fitted to every build in the band. Engine fitment depends on the alternator interface, the PTO, the radiator package, the governor, and the emission tier. For the exact configuration of a specific generator, refer to the full diesel generator specifications database or ask our engineers.

kVA Band	Cummins	Perkins	Weichai	Yuchai
8–15	4B3.9 / 4BT3.9	403D-11 / 404D-22	WP2.1 / WP3.2	YC4A / YC4D
20–30	4BT3.9-G1	1103A-33G	WP4.1	YC4D
40–60	4BTA3.9-G2 / 6BT5.9	1104A-44TG1	WP6	YC6B
80–120	6BT5.9-G1 / 6CT8.3	1104A / 1106A	WP6 / WP7	YC6J
150–200	6CTAA8.3-G2	1106A-70TAG2	WP10 / WP12	YC6G / YC6K
250–330	6LTAA8.9 / NT855	1306C-E87TAG4	WP13	YC6K
400–500	NTA855-G7	2206C-E13TAG2	WD series / 12M33	YC6T / YC6C
600–800	KTA19-G3	2506C	6160A	YC6C
1,000–1,250	KTA38-GA	2806C	16M33	YC12V / YC16V
1,500–2,000	KTA50 / QSX60	4006-23TAG2A	12M33	YC16VC
2,500–4,000	QSK60 / QSK95	4012 / 4016	16M33	YC16V / YC16VC

Find the Engine Model

Start with the genset data tag on the frame or control cabinet. It lists the generator set model and the rated output. Note the genset model, because it identifies the set family and the kVA rating.

Next, find the engine model number stamped directly on the engine block. Common locations are the valve cover, the side of the block near the oil filter, or the blower housing on enclosed units.

Avoid the Emissions Number

Ignore the emissions family numbers on the engine label. They identify the emission family, not the engine model. The engine model you need follows the brand's naming convention, such as Cummins 6CTAA8.3-G2 or Perkins 1106A-70TAG2.

Example: A 250 kVA standby genset with an engine stamp reading NT855 — the cross reference confirms this is the Cummins option for the 250–330 kVA band.

Model Numbers to Engines

Generator model numbers usually encode the output rating, and the engine is a build option within that rating. In most genset naming, the digits identify the standby kVA, and the engine brand is a configuration choice, not part of the set identity.

A 200 kVA build for a European buyer might carry a Perkins 1106A, while the same frame for an African market might carry a Weichai WP12. The genset model stays the same — the cross reference tells you which power plant each build carries.

Parts Require the Engine Model

When ordering replacement parts, you must quote the engine model, not only the genset model. Filters, injectors, and service kits are engineered for the engine. A parts desk that only has the genset model cannot tell you the correct filter.

For Huali sets: The serial number on the data tag carries build information that identifies the engine fitted at the factory. Provide the serial number and our after-sales team can confirm the exact configuration.

Interchangeability & Swaps

Cross reference does not mean free swap. Within a kVA band, the engine options are alternative power plants for the same genset frame, but they are not bolt-in replacements for each other without re-engineering.

What must match: the duty rating, flywheel housing and SAE interface, PTO and governor, radiator and fan package, and emission tier. In practice, changing the engine inside an existing genset is rarely economical.

Because Huali fits all four brands, we can build the same output with the engine you prefer and the parts ecosystem you already stock.

Quick Reference

From Engine Stamp to Correct Parts

A site operator with a 250 kVA standby genset reads the engine stamp and finds NT855. The cross reference confirms this is the Cummins option for the 250–330 kVA band, and the parts section matches the NT855 family to its service kit reference.

If the stamp is unreadable, cross reference by genset model and kVA rating instead, then confirm the fitment with the supplier.

Final engine identification should be confirmed against the engine data plate and the generator specification sheet before ordering parts or replacement units. When in doubt, provide the set serial number to our after-sales team for a factory build record lookup.

Let's talk

Download the Complete Engine Cross Reference Chart

Get the full generator engine model cross reference in Excel, CSV, or PDF — every engine option from 8 to 4,000 kVA across Cummins, Perkins, Weichai, and Yuchai. Also receive a free factory-direct quote for the genset or replacement engine that fits your project.

Frequently Ask Questions

Q: What engine does a Cummins generator use?

A: Cummins generator sets use Cummins engines across the range. A small 8 to 15 kVA set carries a 4B3.9 or 4BT3.9, a mid-range 150 kVA set carries a 6CTAA8.3, and a 1,000 kVA set carries a KTA38. The exact model depends on the kVA band and the duty rating, and the cross reference table above shows the mapping for each band.

Q: What engine is in a Perkins genset?

A: Perkins gensets use Perkins engines, from the 403D-11 in small sets to the 4016 in the largest installations. The 1104A and 1106A families cover the most common mid-range sets, and the 4000 series handles 1,000 kVA and above. The generator engine model cross reference lists the Perkins option for every kVA band.

Q: How do I find the engine model in my generator?

A: Read the genset data tag for the set model, then find the engine model stamped on the engine block, usually on the valve cover or near the oil filter. Ignore the emissions family number. If the stamp is unreadable, cross reference by genset model and kVA rating, or send the set serial number to our after-sales team.

Q: Can I replace a generator engine with a different brand?

A: Technically possible, rarely economical. A different brand is an alternative power plant for the same genset frame, not a bolt-in replacement. The flywheel housing, PTO, governor, radiator, and alternator interface all need to match. In most cases it is cheaper to specify the right engine at build time or replace the set.

Q: Are Weichai and Yuchai generator engines interchangeable?

A: At the genset level, yes. We can build the same kVA output on either a Weichai or a Yuchai engine, and both are popular in Asian and African markets for cost and parts availability. At the engine level they are not interchangeable, so always quote the engine model for parts.

Q: What size engine does a 500 kVA generator need?

A: A 500 kVA standby generator typically uses an engine in the 400 to 500 kVA band, such as a Cummins NTA855, a Perkins 2206C, or the Weichai and Yuchai equivalents listed in the table above. The exact model depends on the prime and standby ratings, the frequency, and the altitude derating at the installation site.

Q: Where is the engine serial number stamped?

A: On most diesel engines the serial number is stamped on a flat machined surface on the block, often near the fuel pump or the cylinder head. The model number is usually more visible, on the valve cover or a label. Both numbers are needed for a complete parts lookup.

Q: How do I cross reference filters to my engine?

A: Use the diesel generator parts cross reference table in this guide. Match your engine model to the OEM filter number, then choose the Baldwin, Donaldson, or Fleetguard equivalent. If your engine is not listed, quote the OEM number to our parts team and we will confirm the equivalent.