Product Overview

The Bosch 1 457 436 088 DEF Filter Kit is a high-performance filtration component designed to maintain the cleanliness and efficiency of Diesel Exhaust Fluid (DEF) systems in heavy-duty commercial vehicles. Engineered to prevent urea crystal buildup and contamination, this filter plays a critical role in protecting the Selective Catalytic Reduction (SCR) system and ensuring emissions compliance.

Ideal for fleet maintenance, diesel repair professionals, and owner-operators, this kit offers OEM-level reliability and performance.

Key Features

• OEM-Equivalent Quality: Manufactured to meet or exceed original equipment standards

• Replaces OEM Part Number: Volvo/Mack 23381562 – fully interchangeable

• Protects SCR Components: Ensures clean DEF supply, preventing clogging and injector failure

• Heavy-Duty Construction: Built to endure high temperature and pressure conditions

• Quick Installation: Direct-fit design for fast, efficient service without modification

• Cross References:

  • Bosch: 1 457 436 088

  • OEM: 23381562

  • Note: Always confirm with your specific vehicle application

Technical Specifications

• Official Product Name: DEF Filter Kit

• OEM Part Number (Replaces): 23381562

• Bosch Part Number: 1 457 436 088

• System Application: Diesel Exhaust Fluid (SCR/DEF systems)

• Condition: Brand New

• Manufacturer / Brand: Bosch

• Application Scope: Heavy-Duty Trucks

Compatible Vehicle Makes & Models

This filter is commonly used in trucks equipped with Bosch or equivalent DEF systems, including:

• Volvo Trucks

• Mack Trucks

• Freightliner

• Kenworth

• Peterbilt

Always verify compatibility using your OEM part number and system specifications.

Included Accessories

• 1 x Bosch DEF Filter Kit (P/N: 1 457 436 088)

• Product labeling and fitment documentation

Product Function & Applications

The Bosch DEF Filter Kit is essential for maintaining the integrity of SCR systems in modern diesel trucks. By filtering out impurities and crystallized urea, it protects downstream components such as injectors, valves, and dosing modules, ensuring optimal system pressure and proper emissions control.

Applications:

• Long-haul and regional diesel truck fleets

• DEF maintenance and replacement intervals

• SCR system repairs and overhauls

• Preventive maintenance programs for emission systems

Warranty Information

• Warranty Duration: Subject to Bosch and distributor-specific policies

• Coverage: Material and manufacturing defects

Manufacturer

• Brand: Bosch

• Origin: OEM-equivalent production for commercial vehicle DEF systems