Mercury – Water Inlet Port Screen | Cooling System Component | Stainless Mesh | 41133

Overview

Keeping your outboard cool starts with steady, clean water flow. The Mercury Marine 41133 Water Inlet Port Screen is built for Mercury 8–25HP carbureted FourStroke engines, protecting your cooling system by filtering out sand, weeds, and debris before they can cause problems. Its stainless mesh screen sits securely in the water intake, keeping your impeller safe and your cooling passages clear. It’s a simple, low-cost part that plays a big role in maintaining smooth, reliable engine performance all season long.

Key Features

• Purpose: Blocks debris from entering the cooling system while maintaining strong water flow.
• Material: Made from marine-grade stainless mesh housed in a durable composite frame.
• Performance: Keeps water moving freely for stable engine temperature and improved cooling efficiency.
• Design: Built to Mercury’s OEM specifications for a perfect fit and long-lasting protection.
• Durability: Designed to handle constant vibration, pressure changes, and exposure to water and heat.
• Compatibility: Fits Mercury 8–25HP carbureted FourStroke outboards.

Engine & Boat Compatibility

• Mercury 8, 9.9, 15, 20, and 25HP carbureted FourStroke outboards.
• Commonly used on small fishing boats, inflatables, aluminum hulls, and portable setups.
• Works in both freshwater and saltwater environments.
• Direct replacement for the factory-installed inlet screen.

Performance & Practical Benefits

The 41133 water inlet screen helps prevent costly cooling issues by keeping debris out of your system. It filters particles before they reach the water pump or thermostat, helping maintain consistent temperatures and reducing the risk of overheating.

The stainless mesh won’t corrode or deform, even after long exposure to salt or sand, and it’s easy to remove and rinse clean. By protecting your impeller and cooling passages, it helps your outboard run cooler, smoother, and more efficiently — a small part that makes a noticeable difference in reliability.

Why Buy OEM

The Mercury 41133 is a genuine Mercury Marine part, designed with the same precision and materials used in new outboards. Aftermarket screens can restrict flow, fit loosely, or corrode prematurely, compromising your engine’s cooling performance.

With Mercury’s OEM part, you know the fit is perfect, the materials are proven, and the protection lasts. It’s an easy, affordable way to keep your outboard’s cooling system running the way Mercury intended — steady and dependable.

FAQ

Q1: Which engines does this screen fit?
It fits Mercury 8–25HP FourStroke carbureted outboards.

Q2: What does it do?
It keeps debris, sand, and weeds from entering the cooling system, ensuring reliable water flow.

Q3: What’s it made from?
A stainless-steel mesh filter framed in durable marine composite material.

Q4: How often should I clean it?
Check and rinse it regularly, especially if boating in weedy or sandy waters.

Q5: Why OEM instead of aftermarket?
Mercury’s OEM screen fits perfectly, resists corrosion, and maintains correct flow for proper cooling performance.