Title:
ELEMENT ASSEMBLY (KU-RD45151940)
Description:
The Kubota KU-RD45151940 Fuel / Water Separator Element Assembly is a genuine OEM filtration component designed to provide efficient water separation and fuel cleaning for Kubota diesel engines. Engineered to Kubota’s factory specifications, this assembly removes water, dirt, rust, and fine contaminants from diesel fuel before it reaches the injection system.
As a result, it helps protect injectors, fuel pumps, and fuel lines from corrosion, clogging, and premature wear. Furthermore, cleaner fuel improves combustion efficiency, supports smoother engine operation, enhances cold-start reliability, and helps maintain consistent engine performance under load.
In addition, this element assembly is designed as part of Kubota’s fuel filtration system, often used in conjunction with a housing unit. Consequently, it provides reliable water separation performance while maintaining stable fuel flow, even in harsh agricultural and construction environments where fuel contamination risk is higher.
The RD451-51940 also features high-efficiency separation media that effectively captures fine particles while separating water from diesel fuel. Therefore, it helps reduce injector damage risk, minimise downtime, and extend the service life of critical fuel system components.
Built for OEM durability, this separator element assembly is designed to withstand vibration, temperature changes, and long operating hours. Routine replacement ensures continued protection of the fuel system and maintains optimal engine reliability.
Whether used in excavators, tractors, or industrial engines, this genuine Kubota assembly delivers dependable filtration performance and long-term fuel system protection.
Model Fitment:
The RD451-51940 is widely used across Kubota tractors and excavators, particularly in fuel separator systems.
Kubota M Series Tractors
- M6040, M7040
- M6060, M7060
- M8540, M8560
- M9540, M9960
- M100, M108, M110, M126, M135 series
Kubota Excavators
- KX040-4
- KX057-4
- KX080-4 / KX080-4S
- U48, U55, U55-4
Used in water separator / fuel filter assemblies across 40+ models
Part Details
- Part Number: KU-RD45151940 / RD451-51940
- Part Type: Fuel / Water Separator Element Assembly
- Brand: Kubota Genuine OEM
- Function: Diesel fuel filtration and water separation
- Application: Kubota tractors, excavators, and industrial engines
- Construction: High-efficiency separator element (used within housing assembly)
- Purpose: Removes water, dirt, rust, and fine contaminants from diesel fuel
- Installation Type: Direct-fit OEM replacement element assembly
- System Role: Protects injectors, pumps, and fuel system components
- Cross References: RD451-51940
