^AARC — UEC60LS | Zulu Code

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Description

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Did you know

The UEC60LS is part of the long-running UE engine series, which has been developed and manufactured by Japan Engine Corporation (J-ENG) and its predecessors, including Mitsubishi Heavy Industries (MHI), since 1910. The UEC60LSE-Eco-A2, a specific model within the UEC60LS series, has seen updates as recently as June 2026.
The UEC60LS series is a key part of J-ENG's lineup, particularly within their 'LSE' and 'LSH' series, which are known for ultra-low fuel oil consumption. The UEC60LSH is a successor to the UEC60LSE type engine, and J-ENG is also developing an ammonia-fueled version, the UEC60LSJA, and a methanol-fueled UEC50LSJM, indicating a continuous evolution of the LS series towards alternative fuels.
The UEC60LS series, particularly the UEC60LSE-Eco-A2, is highly regarded for its low fuel oil consumption, high reliability, and ability to operate continuously at low loads without needing special component changes. It is also designed to meet IMO NOx Tier III regulations, with the option of J-ENG's Low Pressure EGR System.

Model	Bore [mm]	Stroke [mm]	SFOC at 100% load (Tier 2 mode) [g/kWh]	SFOC with Tier 3 mode (LP-EGR) [g/kWh]
6UEC60LSE-Eco-A2	600	2300	164	165.6
6UEC42LSH-Eco-D3	420	1600	164	165.6
6UEC45LSE-Eco-B2	450	1800	169	170.7

Sources: marinelog.com; moomoo.com; youtube.com; j-eng.co.jp; informa-japan.com; j-eng.co.jp; bunkerindex.com; ship-technology.com; aliyuncs.com; scribd.com; scribd.com

Competitive Models

Similar models from other manufacturers — apple to apple.

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Spares

Positions 1–12 are the same part on every engine and are safe to quote by code. 13 and 14 vary with cylinder count.

1Cylinder Liner — page under construction
2Piston — page under construction
3Fuel Injector Nozzle — page under construction
4Cylinder Head / Cover — page under construction
5Connecting Rod — page under construction
6Main Bearing — page under construction
7Bottom-End (Crankpin / Con-Rod) Bearing — page under construction
8Fuel Injection Pump — page under construction
9Fuel Injector (Complete) — page under construction
10Exhaust Valve — page under construction
11Inlet Valve — page under construction
12Piston Ring Set — page under construction
13Crankshaft — page under construction
14Camshaft — page under construction

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Code map

^A  A  R  C
 │  │  │  └── Model: UEC60LS
 │  │  └───── Make: Japan Engine Corp (J-ENG)
 │  └──────── Equipment: Main Engine
 └─────────── System: ME, Propulsion & Steering