Title:
INNER ELEMENT (KU-RD15842280)
Description:
The Kubota KU-RD15842280 Inner Air Filter Element is a genuine OEM secondary filtration component designed to work alongside the outer air filter in Kubota’s dual-stage air intake system. Engineered to Kubota’s precise factory specifications, this inner element provides final-stage protection by capturing fine dust particles that may pass through the primary filter.
As a result, it plays a critical role in safeguarding the engine from abrasive contaminants that can cause accelerated wear to cylinders, pistons, turbochargers, and valves. Furthermore, by ensuring only ultra-clean air reaches the combustion chamber, it helps maintain stable engine performance, efficient fuel combustion, and long-term reliability.
In addition, the RD158-42280 inner element is designed for high filtration efficiency with minimal airflow restriction. Consequently, it supports consistent engine breathing under heavy workloads, helping to maintain power output and reduce strain on the intake system.
Built as part of Kubota’s sealed air cleaner assembly system, this OEM inner filter ensures precise fitment and reliable sealing within the housing. Therefore, it prevents unfiltered air bypass and maintains the integrity of the entire air intake system, especially in dusty or high-debris environments.
Routine replacement (alongside the outer element) is essential to maintain maximum engine protection. Whether used in excavators, compact loaders, or utility machines, this genuine Kubota inner filter delivers dependable OEM performance and extended engine life.
Model Fitment:
Commonly fitted to selected Kubota compact construction equipment, including:
Compact Excavators
- KX040-4
- KX040-5
- KX040 series variants
- KX042-4
- KX042-4AKX042-5
- U48-5
Wheel Loaders / Utility Equipment
Air Cleaner Assemblies
- Dual-stage Kubota air intake systems using RD158-series housings
Part Details:
- Part Number: KU-RD15842280 / RD158-42280
- Part Type: Inner Air Filter Element
- Brand: Kubota Genuine OEM
- Function: Secondary engine air filtration
- Application: Kubota excavators and compact machinery
- Filter Type: Inner / Secondary air cleaner element
- Construction: High-efficiency pleated filter media
- Purpose: Removes fine dust and micro-contaminants from intake air
- Installation Type: Direct-fit OEM replacement
- System Role: Final-stage engine air protection in dual-filter system
- Cross References: RD158-42280, RD15842280, AF25556 (common equivalent references)
