This Quicksilver in-line fuel filter is designed specifically for small Mercury/Mariner outboards, delivering OEM quality filtration to protect your engine. It fits neatly under the engine cowling, filtering fuel before it reaches your carburetor or injectors. Compatible with a wide range of models from 4 HP up to 20 HP, it covers popular portable engines – including 4–6 HP four-strokes (1999 & newer) and 8–9.9 HP four-strokes (2005 & newer) – as well as some 2-stroke models. This broad compatibility makes it an ideal choice for dinghies, RIBs, fishing boats, and other small craft powered by Mercury/Mariner outboards in this horsepower class.
The filter’s translucent plastic bowl allows for quick inspection of your fuel’s condition at any time – you can easily spot water, sediment, or debris in the fuel and know when it’s time for a replacement. Key advantages include: true OEM fit and easy installation (it simply snaps in-line in place of the old filter), effective removal of contaminants to keep your engine running smoothly, and a durable construction that meets Mercury Marine’s specifications. By using a genuine Quicksilver filter, you ensure proper fuel flow and maintain the performance and warranty of your Mercury engine.
For boaters, this means peace of mind and longer engine life. Replacing the under-cowl fuel filter regularly (Mercury recommends at least once a year or per the service schedule) will prevent clogged fuel passages and costly engine damage. The Quicksilver 8M0157133 filter is the manufacturer’s recommended choice to keep your 4–9.9 HP outboard running at its best, season after season.



