The ADBLUE Filter Kit (52215-16516), also known as Donaldson P956170, is a Diesel Exhaust Fluid (DEF) filter cartridge designed for use in various heavy-duty vehicles. Here are the key specifications:

• Inner Diameter: 20.5 mm (0.81 inch)
• Outer Diameter: 48.4 mm (1.91 inch)
• Overall Length: 95.4 mm (3.76 inch)

This filter is essential for maintaining the quality of DEF, which is used to reduce emissions in diesel engines. It helps ensure that the DEF system operates efficiently and effectively.