Downtime is costly. Coolant leaks in your fleet vehicles translate directly to lost revenue and potential engine damage. Prevent these costly issues with FEL-PRO's 35838 Engine Coolant Thermostat Housing O-Ring. Engineered to exacting standards, this O-ring delivers a precise, reliable seal, preventing coolant leaks and ensuring your vehicles stay on the road. Unlike inferior alternatives, the 35838 is application-specific, guaranteeing a perfect fit and preventing costly mismatches. FEL-PRO's commitment to quality is reflected in rigorous testing and validation processes, ensuring superior durability and longevity under demanding conditions. This translates to reduced maintenance costs and minimized downtime for your fleet. Choose FEL-PRO choose reliability, choose efficiency, choose peace of mind. Invest in your fleet's uptime by investing in FEL-PRO quality. The 35838 O-ring is a small part with a big impact on your bottom line. Don't let a small leak become a major headache. Choose FEL-PRO and keep your fleet running smoothly.