Kubota DOC : OEM 1J774-18155

Emissions System Precision for Kubota Diesel Equipment

What Is It?

The Diesel Oxidation Catalyst (DOC) OEM 1J774-18155 is a factory-grade exhaust aftertreatment component designed for Kubota diesel engines. Positioned upstream of the Diesel Particulate Filter (DPF), the DOC is responsible for oxidizing carbon monoxide (CO) and hydrocarbons (HC), making it a vital part of the emissions system in Tier 4-compliant Kubota equipment.

Why Choose OEM 1J774-18155?

Engineered by Kubota to meet strict OEM specifications, this DOC ensures precise fitment and reliable working conditions in compact diesel machinery. Its construction promotes clean combustion, supports DPF functionality, and minimizes emissions-related faults.

Key Benefits

✅ OEM-Certified Fit: Designed to integrate seamlessly with Kubota Tier 4 emissions systems
✅ Effective Emissions Reduction: Oxidizes CO and HC into less harmful gases
✅ Supports DPF Regeneration: Helps maintain proper exhaust temperature for downstream performance
✅ Built for Durability: Withstands vibration, thermal cycling, and field operation stress
✅ Sensor-Compatible Design: Includes provisions for OEM sensor mounting and integration

Applications

This DOC is used in various Kubota diesel-powered machines such as compact tractors, skid steers, loaders, and utility vehicles. It supports Tier 4 emissions compliance in equipment running in agricultural, construction, municipal, and industrial environments.

Installation Notes

Installation should be performed by a qualified technician. Inspect the gasket surfaces, sensor ports, and mounting hardware. Once installed, clear any fault codes and reset the emissions system using Kubota-compatible diagnostic tools. A manual regeneration may be required after replacement.

Final Thoughts

The OEM 1J774-18155 DOC is a key component for maintaining emissions control and system reliability in Kubota diesel machinery. Its rugged design and precise fit make it a trusted solution for operators focused on uptime, compliance, and long-term engine health.