4354281 Genuine Cummins SCR DEF Injection Doser
Unit Auto Parts LLC provides a complimentary 2-Year Warranty on all automotive parts. Shop with confidence knowing your purchase is protected. Learn More
Unit Auto Parts LLC provides a complimentary 2-Year Warranty on all automotive parts. Shop with confidence knowing your purchase is protected. Learn More
The 4354281 is a Cummins Genuine SCR DEF injection doser designed for Cummins aftertreatment systems. It meters diesel exhaust fluid into the exhaust stream in controlled quantities to support proper NOx conversion within the SCR catalyst.
| Condition | New |
| Part Number | 4354281 |
| Brand | Cummins |
| Part Type | SCR DEF Injection Doser |
| Weight | 4.2 lb |
The 4354281 SCR DEF injection doser is built to match factory performance and installation requirements:
• Designed for Cummins SCR aftertreatment system integration
• Provides accurate DEF delivery based on ECM control strategy
• Interfaces directly with OEM exhaust emissions management
• Manufactured to Cummins emissions and durability specifications
• Ensures proper DEF spray pattern within the exhaust flow
• Supports efficient SCR catalyst function during varying load conditions
The 4354281 is intended for Cummins engines equipped with the corresponding OEM SCR aftertreatment configuration. Installation should include inspection of DEF lines, mounting points, and electrical connections to ensure proper system performance.
Always verify part number and engine serial number before installation.