Product Details: The Baldwin 7-5/32" Spin-On Coolant Filter is designed to protect your engine and enhance its performance. This filter is designed to help maintain your diesel engine cooling system and add chemicals to the coolant itself to replenish important protectants that may be lost over time. It features a balanced treatment additive plus, which is a phosphate/molybdate/nitrite-based inhibitor used to protect against rust, corrosion, and scale. This filter is designed for use in plain water or in up to 60 percent antifreeze solutions. It is easy to install and provides reliable performance. FleetPride is your First Click in Heavy Duty®.