Mercury – Remote Oil Tank | Oil Delivery System | Durable Marine Composite | 8742A22

Overview

If you’ve ever run a long stretch upriver or pushed across choppy water with a two-stroke that’s working hard, you know how much confidence comes from an oil system you never have to second-guess. The Mercury 3-Gallon Remote Oil Tank 8742A22 is the kind of part that quietly earns your trust. It sits tucked away doing its job without drama — keeping your engine fed, protected, and ready for whatever the day brings. Whether you’re cruising to your favorite fishing grounds or hauling gear across a busy bay, having reliable oil delivery isn’t just convenient. It’s peace of mind you can feel in the helm.

Key Features

• Three-gallon remote oil tank for extended run time and steady oil supply.
• Durable composite construction designed for harsh marine environments.
• Includes tank, lines, mounting bracket, and all required hardware.
• Designed to match OEM flow rates and internal baffling requirements.
• Built to Mercury Marine specifications for long-term reliability.

Engine & Boat Compatibility

• Fits a wide range of Mercury and Mariner two-stroke engines, including:
  • 200–250 horsepower Jet Drive and M2 Jet Drive systems.
  • 200–225 horsepower DTS six-cylinder Outboards.
  • 2.5L and 3.0L six-cylinder models.
  • 250XB EFI and performance two-stroke setups.
• Compatible with bass boats, flats boats, jet boats, and multi-species hulls.
• Replaces many remote tanks used from the mid-1990s onward.

Performance & Practical Benefits

A remote oil tank might not look exciting, but the difference a dependable one makes out on the water is huge. With a full three gallons onboard, you’ll get long, uninterrupted run time — perfect for boaters who cover a lot of water or spend full days chasing tide cycles. The tank’s internal design keeps the oil feed steady, even when your boat is bouncing through wakes or turning hard.

You’ll also appreciate the clean routing and consistent pressure this tank provides. There’s no sputter, no hiccup, no last-minute worry about whether your engine is getting the lubrication it needs. Everything feels smooth and predictable, especially at higher RPM. Maintenance stays simple too — clear lines, straightforward mounting, and hardware designed for easy service down the road.

Why Buy OEM

Oil delivery is not an area where “close enough” is good enough. Mercury’s OEM tank uses the correct materials, fittings, line sizing, and internal baffling that your engine was engineered around. Aftermarket tanks often cut corners with cheaper plastics, irregular fittings, or different capacities that affect system performance.

Choosing OEM means your oil system stays exactly as Mercury intended: dependable, predictable, and trouble-free. When you’re miles from the dock, that kind of reliability really matters.

FAQ

Q1: Which engines does this tank fit?

It fits many Mercury and Mariner six-cylinder two-stroke engines, including Jet Drive models, EFI models, and multiple DTS engines.

Q2: What sets this tank apart from aftermarket versions?

OEM materials, correct baffling, proper line fittings, and long-term durability.

Q3: How can I confirm fitment for my motor?

Match the part number to your existing tank or check your engine’s parts diagram.

Q4: Is it suitable for saltwater?

Absolutely — it’s designed for both salt and freshwater use.

Q5: Is installation difficult?

Not at all. Most boaters can install it using basic tools and the included hardware.