Mercury – Compressor | OptiMax Two-Stroke Series | Marine-Grade Construction | 8M0133589

Overview

There’s a certain peace that settles in when you know your engine is breathing the way it should. You feel it when you push the throttle and the response is instant, clean, and confident. That’s the kind of trust boaters grow into over seasons spent running the same back bays, long channels, and open stretches. The Mercury Marine part 8M0133589 compressor delivers that feeling — the steady assurance that your OptiMax outboard will fire, idle, and climb through the RPMs without hesitation. When the weather turns or the chop builds, it’s the kind of reliability you can’t put a price on.

Key Features

• Designed to supply consistent, pressurized air for OptiMax Two-Stroke systems
• Built with durable, marine-rated materials tested for heat, pressure, and long run cycles
• Includes: compressor, plug, screws, cable clip, nylon screw, connector, and tubing
• Engineered with an oil seal and pressure-tested to Mercury specifications
• Fits Mercury OptiMax 200–225 horsepower outboards (serial numbers 0G760300–0G960499)
• Precision-machined internal components for balanced, smooth operation

Engine & Boat Compatibility

• Mercury OptiMax 200 horsepower
• Mercury OptiMax 225 horsepower
• Serial number range: 0G760300 through 0G960499
• Common on bass boats, inshore center consoles, multi-species rigs, and coastal fishing boats
• Designed for two-stroke direct-injection systems requiring a stable, dependable air supply

Performance & Practical Benefits

A good compressor doesn’t call attention to itself — it just works. When it’s the right one, you’ll notice your motor settling into a smooth idle instead of wandering. You’ll hear a cleaner tone as the engine climbs onto plane. You’ll feel more consistent power when you’re loaded down with gear or pushing against current. This Mercury compressor is tuned to the demands of OptiMax engines, meaning airflow stays tight and consistent, even on long runs or hot summer afternoons.

Durability also matters. Mercury designed this unit to handle the harsh, real-world environment that salt, moisture, vibration, and heat create. From the oil seal to the internal bearings, everything is built with longevity in mind. Installation is straightforward thanks to the included hardware, and once mounted, the fit is snug and secure — no rattling, no drama, no guessing.

Why Buy OEM

When it comes to components as precise as an air compressor, OEM isn’t a luxury — it’s the right call. A genuine Mercury Marine part is engineered specifically for your OptiMax system, not adapted to “fit” a range of engines. The materials are tested in conditions far tougher than anything most boaters will put them through. You’re getting consistency, a proper seal, the correct tolerances, and long-term reliability. Aftermarket parts may save a little upfront, but they can cost power, fuel efficiency, and even engine life. With an OEM part, you know it’s going to match, mount, and perform correctly from day one.

FAQ

Q1: Which Mercury engines does the Compressor 8M0133589 fit?

It’s made for Mercury OptiMax 200 and 225 horsepower outboards within serial numbers 0G760300–0G960499.

Q2: What makes this different from aftermarket compressors?

Mercury machines and tests every unit to exact OptiMax specifications, ensuring proper airflow, sealing, and long-term durability.

Q3: How do I know this is the correct replacement?

Match your engine serial number to the range listed above. If you’re unsure, most owners check the plate on the engine bracket.

Q4: Can it handle both freshwater and saltwater use?

Absolutely — it’s designed for the harshest marine environments and holds up well in either type of water.

Q5: Is installation straightforward?

Most experienced owners find the process simple with basic tools, thanks to the included mounting hardware and factory-fit design.