The Fleetguard FS1212 Fuel/Water Separator Spin-On Filter is expertly designed to protect diesel engines by efficiently separating water and contaminants from fuel. Replacing equivalent models like the Donaldson P558000 and Baldwin BF1212, this filter delivers an impressive 90% emulsified and free water separation, ensuring cleaner fuel for optimal engine performance. With a robust design featuring a 20-micron rating for effective filtration, the FS1212 boasts a durable build with a height of 201.17 mm and a 1-14 UNS-2B thread size. Ideal for industrial and heavy-duty diesel applications, this Fleetguard filter extends engine life and improves fuel efficiency with reliable, high-efficiency filtration.