Mercury – Quicksilver 8189941 Engine Oil Check Valve | Mercury & Mariner 30–200HP Outboards | 8189941

Overview

Reliable oil flow keeps your engine running smooth, and the Quicksilver 8189941 Engine Oil Check Valve makes sure it stays that way. Designed for Mercury and Mariner 30–200HP outboards, this OEM inline valve helps maintain consistent oil pressure and prevents backflow — protecting your engine from oil starvation or contamination.

It’s a small but critical part of your oil delivery system, built to Mercury’s exact specifications for fit and reliability. Easy to install with basic tools, it’s one of those quick maintenance fixes that keeps your motor healthy for the long haul.

Key Features

• Purpose: Maintains steady oil pressure and prevents oil backflow in the engine’s lubrication system.
• Fitment: For Mercury and Mariner 30–200HP outboards.
• Design: Inline-style check valve for smooth oil delivery and reliable sealing.
• Ease of Install: Simple drop-in replacement — installs easily with common tools.
• OEM Quality: Meets Mercury Marine factory standards for fit, performance, and durability.

Engine & Boat Compatibility

• Mercury and Mariner 30–200HP outboards
• Found on runabouts, fishing boats, pontoons, and center consoles

Performance & Practical Benefits

The 8189941 check valve ensures your oil system works the way it should — keeping oil flowing in the right direction and maintaining pressure where your engine needs it. Without a functioning valve, oil can drain back or air can enter the line, leading to dry starts and added wear.

This OEM replacement installs quickly and restores the reliability of your outboard’s oiling system. It’s one of those small components that quietly keeps your engine’s heart beating strong.

Why Buy OEM

Mercury’s OEM oil system components are built for precision and endurance in marine conditions. Aftermarket valves might look similar but often use weaker springs or seals that can fail under pressure or heat.

A genuine Quicksilver check valve ensures the right fit, smooth flow, and lasting reliability — engineered by the same people who designed your outboard.

FAQ

Q1: What engines use the Quicksilver 8189941 check valve?
A: It’s made for Mercury and Mariner 30–200HP outboards. Check your owner’s manual for confirmation.

Q2: What does the valve do?
A: It maintains oil pressure and stops backflow in the engine’s oil delivery system.

Q3: Can I install it myself?
A: Yes. It installs inline using standard tools — quick and straightforward.

Q4: How often should it be replaced?
A: Replace it if you notice inconsistent oil pressure, leaks, or during routine oil system maintenance.

Q5: Why OEM instead of aftermarket?
A: OEM valves are pressure-tested and use corrosion-resistant seals for long-term reliability in marine environments.