1204E-E44TTA Industrial Open Power Unit

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Our 1200 Series Tier 4 interim engines offer a smart solution for customers operating in EU Stage IIIB/U.S. EPA Tier 4 Interim equivalent territories. Ideally suited to large and medium-sized machines for construction, agriculture and materials handling – and also available as an IOPU – there's a Perkins 1200 Series engine for you. With common hook up points and multiple options, our solutions support your move to the more stringent Stage IV/Tier 4 Final emission standards.


4.4 litre

117-129.4 kW (157-173 hp)

Designed to meet EU Stage IIIB/U.S. EPA Tier 4 Interim equivalent emission standards

Our IOPUs are designed to be productive and to offer the impressive power density that allows our customers to maximise their profitability. The 1204E-E44TTA IOPUs is series turbocharged.

Power Rating

Minimum Power 156.9 HP 117.0 kW Less
Maximum Power 173.5 HP 129.4 kW Less
Rated Speed 2200 rpm 2200 rpm Less

Emission Standards

Emissions EU Stage IIIB/U.S. EPA Tier 4 Interim equivalent EU Stage IIIB/U.S. EPA Tier 4 Interim equivalent Less


Bore 4.13 in 105.0 mm Less
Stroke 5.0 in 127.0 mm Less
Displacement 268.5 in³ 4.4 l Less
Aspiration Series turbocharged aftercooled Series turbocharged aftercooled Less
Rotation from Flywheel End Anti-clockwise Anti-clockwise Less
Combustion System Direct injection Direct injection Less
Compression Ratio 16.5:1 16.5:1 Less
Number of Cylinders 4 inline 4 inline Less
Total Coolant Capacity 2.85 gal (US) 10.8 l Less
Cooling System Liquid Liquid Less
Total Lubricating Capacity 3.6 gal (US) 13.5 l Less

Engine Dimensions

Dry Weight 1543.2 lb 700.0 kg Less

Engine Dimensions*

Height 45.3 in 1150.0 mm Less
Length 56.4 in 1433.0 mm Less
Width 45.3 in 795.0 mm Less

Aftertreatment Dimensions* - DOC/DPF > 82 kW (110 hp)

Diameter 10.6 in 270.3 mm Less
Height 11.8 in 300.5 mm Less
Length 32.6 in 828.0 mm Less
Weight 81.6 lb 37.0 kg Less
Width 14.3 in 365.0 mm Less