CAT 259B3 Rear Idler | OEM 304-1894 | Replacement Part
Contact us with your machine make, model and OEM part number before ordering and our team will confirm compatibility before you buy.
CAT 259B3 Rear Idler | OEM 304-1894 | Replacement Part
This rear idler assembly is designed for CAT 259B3 compact track loader applications. The rear idler is an important part of the CTL undercarriage system, helping to guide the rubber track and maintain correct track alignment during operation.
This replacement compact track loader rear idler is listed against OEM reference 304-1894 . Always compare the OEM reference, machine model and existing idler assembly before ordering.
Product Specification
- Product Type: Rear Idler Assembly
- Machine Make: CAT
- Machine Model: 259B3
- OEM Reference: 304-1894
Fitment Advice
Before ordering, confirm the machine model and OEM reference where applicable. Rear idler fitment can vary depending on machine configuration, serial range and undercarriage setup. Matching the correct rear idler assembly helps maintain proper track alignment, reduce undercarriage wear and support reliable compact track loader performance.
Single Flange Rear Idler Wheel for Caterpillar® 259B3
This replacement single flange rear idler wheel is designed for compatible Caterpillar® 259B3 compact track loader undercarriage systems. Mounted beneath the drive sprocket within the rear section of the undercarriage assembly, the idler helps support rubber track alignment and maintain smoother machine operation across demanding site conditions.
OEM reference 304-1894 is commonly associated with this style of Caterpillar® rear idler assembly. Compatibility should always be confirmed using machine model information, serial range and existing OEM references before ordering replacement undercarriage components.
Replacement Rear Undercarriage Idler
This version is the single flange rear idler configuration used on selected Caterpillar® compact track loader systems. Designed for installation below the sprocket assembly, the idler helps maintain proper rubber track positioning during machine operation in abrasive and high-load environments.
- Replacement single flange rear idler wheel
- Suitable for Caterpillar® 259B3 compact track loaders
- Designed for rear undercarriage fitment below the sprocket
- Direct replacement undercarriage component
- Manufactured for demanding machine applications
Heavy-Duty Compact Track Loader Component
Rear idlers are an important part of compact track loader undercarriage systems and help maintain stable rubber track movement while supporting smoother machine travel across uneven and abrasive operating conditions.
Produced using durable undercarriage-grade materials and sealing systems, this rear idler assembly is designed for dependable operation across construction, demolition, landscaping, agricultural and groundwork applications.
Additional Product Information
- OEM reference: 304-1894
- Single flange rear idler wheel assembly
- Replacement compact track loader undercarriage component
- Manufactured for Caterpillar® 259B3 applications
- Commercial USA shipping available on qualifying orders
CAT 259B3 Rear Idler | OEM 304-1894 | Replacement Part
This Rear Idler is designed for CAT 259B3 compact track loader applications.
Product Specification
- Product Type: Rear Idler
- Machine Make: CAT
- Machine Model: 259B3
- OEM Reference: 304-1894
Related Collections
Also Fits These Models
This rear idler is also compatible with the following machine models.
CAT 259B3 Rear Idler | OEM 304-1894 | Replacement Part FAQs
Will this rear idler fit my machine?
This product is listed for compatible CAT 259B3 applications. Always confirm compatibility before ordering.
What is the OEM reference?
OEM references: 304-1894
What does a rear idler do?
A rear idler supports and guides the rubber track within the undercarriage system and helps maintain correct track alignment.