D1803-CR-E4B
- EPA Tier 4
- CARB Tier 4
- EU Stage IIIA
D1803-CR-E4B
- EPA Tier 4
- CARB Tier 4
- EU Stage IIIA
Rated Power
28.0 kW @ 2700 rpm
Performance Curves

Features and Benefits
Proven Reliability and Technology
The latest technology and strong performance-two things customers expect from Kubota engines. We continue to provide both of these through the pursuit of excellence in three key areas: emissions compliance, progress towards fully electronic-controlled engines, and flexibility in the products and services we provide to customers worldwide.
Clean and Quiet Power
A common rail system has made it possible to optimize combustion and create a more durable and quieter engine with higher fuel efficiency. By meticulously screening and controlling the exhaust gas aftertreatment components (Diesel Oxidation Catalyst [DOC] and Diesel Particulate Filter [DPF]), we are able to offer a clean and high-performance engine.
Emissions Compliance
Meeting rigid emissions regulations can be a challenge for any company. D1803-CR-E4B engine have been designed to comply with stringent regulations: EPA / CARB Tier 4 + EU Stage IIIA. In addition, innovative emissions solutions, such as the use of aftertreatment units, have also been integrated into the 03 Series engines.
Flexibility
Flexibility is a must when working with customers in different
countries who have different engine needs. Since Kubota 03
Series engines have evolved along every step in meeting the
requirements of each EPA Tier, we are able to provide our
customers worldwide with engines certified for the appropriate
emissions regulations. In addition, we have designed aftertreatment
units with minimum impact for easy installation.
The Kubota 03 Series is the ideal solution for your company’s
global marketing strategy. We continuously strive to meet your
needs with the experience and expertise that is your due.
Trust
Engine Specifications
Engine model | D1803-CR-E4B |
---|---|
Emission regulation | EPA/CARB Tier 4 + EU Stage IIIA |
Type | Vertical, water cooled 4-cycle diesel engine |
Cylinders | 3 |
Bore and Stroke mm (in) |
87.0 x 102.4 (3.43 x 4.031) |
Displacement L (cu.in) |
1.826 (111.4) |
Aspiration | Naturally aspirated |
Aftertreatment | DOC + DPF |
Rated output / speed*1 kW (HP) / rpm |
28.0 (37.5) / 2700 |
Maximum torque / speed*1 Nm (lb-ft) / rpm |
115.8 (85.4) / 1600 |
Combustion system | Direct injection |
Fuel system | Common rail system |
Length x Width x Height*2 (without aftertreatment unit) mm (in) |
551 x 536 x 711 (21.7 x 21.1 x 28.0) |
Length x Width x Height*3 (with aftertreatment unit) mm (in) |
746 x 536 x 721 (29.4 x 21.1 x 28.4) |
Dry weight kg (lb) |
185 (407) |
Specifications are subject to change without notice.
DOC: Diesel Oxidation Catalyst
DPF: Diesel Particulate Filter
Dimensions and dry weight are according to Kubota's standard specification.
Dimensions and weight depend on completed specifications.
- 1: SAE J1995 gross intermittent
- *2: Exclude cooling fan and exclude aftertreatment unit
- *3: Exclude cooling fan and include aftertreatment unit on engine
Dimensions

