Bosch Diesel Exhaust Fluid (DEF) Module – NEW (0 444 021 058)

Restore Emissions Performance for Your Ford Super Duty

Upgrade your truck’s emissions system with the Bosch Diesel Exhaust Fluid (DEF) Module – NEW, part number 0 444 021 058. Specifically engineered for 2011–2022 Ford F-250 and F-350 Super Duty models with the 6.7L Powerstroke engine, this OEM-quality module ensures reliable DEF dosing and optimal SCR (Selective Catalytic Reduction) system performance.

Key Features

• OEM Quality & Fit: Manufactured by Bosch, the original equipment supplier for Ford, guaranteeing precise fitment and seamless integration with your truck’s emissions system.

• Direct Replacement: Designed as a direct-fit, OE-style replacement for the factory DEF dosing module, making installation straightforward for qualified mechanics.

• Durable Construction: Built to withstand harsh operating environments, ensuring years of reliable use even in demanding conditions.

• Maintains Factory Function: Restores proper DEF dosing to protect vital engine components, maintain emissions compliance, and prevent issues such as check engine lights or power loss.

• Wide Compatibility: Fits 2011–2022 Ford F-250 and F-350 Super Duty 6.7L Powerstroke models; also compatible with select Ford Transit models—verify fitment for your vehicle.

OEM Cross Reference Numbers

• 0 444 021 058

• 0444021058

• 904464 / 904-464

• AL3E5J281AC / AL3E-5J281-AC

• AL3Z5J281A / AL3Z-5J281-A

• AL3Z5J281B / AL3Z5J281-B

Product Benefits

• Restores Emissions System Reliability: Proper DEF dosing is critical for SCR performance, reducing harmful NOx emissions and keeping your truck compliant.

• Protects Engine Components: Prevents damage to the catalytic converter and other emissions equipment by ensuring accurate DEF injection.

• Easy Installation: Direct-fit design means no modifications required—simply replace the old module and restore full emissions functionality.

• Trusted Brand: Bosch is a global leader in diesel fuel and emissions systems, trusted by automakers and diesel professionals worldwide