Cummins WF2126 Water Filter – DCA4+ Coolant Additive

The Cummins WF2126 Water Filter is a heavy-duty coolant filtration and conditioning filter designed for Cummins diesel engines and cooling systems. It combines coolant filtration with DCA4+ (Diesel Coolant Additive 4 Plus) technology to help maintain proper coolant chemistry and protect critical engine cooling-system components.

Product Specifications

Product Overview

The WF2126 is a genuine-style Cummins coolant/water filter designed to help keep the engine cooling system clean while maintaining the appropriate level of coolant additives.

Its integrated DCA4+ tablet gradually releases coolant additive into the cooling system. This helps provide protection against common cooling-system problems such as corrosion, scale formation, and liner pitting/cavitation, helping support long-term engine reliability.

The filter is engineered for heavy-duty diesel applications where consistent coolant conditioning is important for maintaining efficient heat transfer and protecting cooling-system components.

Key Features

• Cummins WF2126 water/coolant filter

• Integrated DCA4+ coolant additive tablet

• Helps filter contaminants from engine coolant

• Helps maintain proper coolant additive concentration

• Supports protection against corrosion and scale

• Helps reduce the risk of cylinder-liner cavitation/pitting

• Durable construction for heavy-duty diesel applications

• M36 × 2-6G internal thread

• Compact design with 146.3 mm (5.76 in) overall height

• 93.73 mm (3.69 in) maximum outside diameter

Typical Applications

The WF2126 is intended for use with Cummins heavy-duty diesel engines and compatible cooling systems. It is suitable for demanding applications such as:

• Heavy-duty trucks

• Construction and earthmoving equipment

• Mining machinery

• Industrial diesel engines

• Agricultural equipment

• Marine diesel applications

• Standby and prime-power generator sets

Benefits of Coolant Filtration

Regular coolant filtration and conditioning can help maintain cooling-system performance by removing suspended contaminants while replenishing essential coolant additives. Proper coolant maintenance can help protect components such as radiators, water pumps, cylinder liners, and other cooling-system passages.

Important: Always verify the filter part number, thread specification, and required DCA/coolant additive level against the specific engine model and Cummins service documentation before installation.

Technical Summary

Cummins WF2126 | Water/Coolant Filter | DCA4+ Tablet | 93.73 mm OD | 146.3 mm Height | M36 × 2-6G Internal Thread