Mercury – Alternator Belt | Poly V Drive Belt | Durable Ribbed Design | Part Number 897574Q01

Overview

There’s nothing quite like the steady confidence you feel when your outboard hums along with every system running just the way it should. The Quicksilver 897574Q01 Alternator Belt is one of those small-but-crucial parts that keeps your day on the water uninterrupted. When this belt is doing its job, your battery stays charged, your electronics stay alive, and your motor runs with the kind of smooth consistency you count on. Whether you’re cruising a long stretch of shoreline or easing back toward the dock at sunset, it’s good to know your outboard is powered by a belt that won’t quit on you when you need it most.

Key Features

• Designed specifically for Mercury 75–115 horsepower EFI outboards (serial 1B366823–2B094995)
• 4-rib Poly V belt for smooth, efficient power transfer
• Built to withstand heat, vibration, and constant load changes
• Engineered for long-lasting durability in harsh marine environments
• Meets Mercury Marine OEM performance and fitment standards

Engine & Boat Compatibility

• Fits Mercury 75 HP, 90 HP, and 115 HP EFI FourStroke outboards
• Suitable for a wide range of boats including:
  • Center consoles
  • Pontoon boats
  • Aluminum fishing rigs
  • Runabouts and small cruisers
• Works with engines in the serial range 1B366823 through 2B094995
• Always confirm belt routing and part number in your service manual

Performance & Practical Benefits

A healthy alternator belt does more than turn a pulley it powers your entire electrical backbone. When this belt wears down or starts slipping, you often feel it before you see it: dimmer lights, weaker electronics, or a slight change in the way the engine sounds under load. Installing a fresh Quicksilver Poly V belt brings everything back into balance.

The 4-rib design provides a wide, secure contact surface that grips the pulley smoothly without squeal or slippage. It transfers power efficiently, even when the engine is working hard in choppy water or during fast throttle transitions. Because it’s engineered specifically for Mercury EFI outboards, the belt stays aligned and tensioned correctly, reducing wear on both the belt and the pulleys.

Marine life is hard on belts heat builds beneath the cowling, salt clings to surfaces, and vibration never really stops. This Quicksilver belt is built with materials designed to withstand that reality. It resists glazing, cracking, and stretching far better than generic belts, keeping your charging system steady and reliable.

For boaters who enjoy long days on the water, a dependable alternator belt means fewer surprises and more time doing what you came out to do fish, cruise, explore, or simply relax.

Why Buy OEM

Drive belts might look similar on the shelf, but the differences show up quickly once they’re installed. Mercury Marine belts are engineered to match the pulley sizing, tension requirements, and operating temperatures of their outboards. Aftermarket belts may run, but they rarely run right slipping sooner, wearing faster, or stretching under heat. Choosing an OEM Quicksilver belt gives you the durability, fitment, and consistency your engine was designed for. It’s a small investment that protects your charging system and keeps your day worry-free.

FAQ

Q1: Which engines does the 897574Q01 belt fit?

It fits Mercury EFI FourStroke outboards from 75 to 115 HP, within serial numbers 1B366823–2B094995.

Q2: Why choose an OEM belt instead of aftermarket?

OEM belts deliver proper grip, alignment, heat resistance, and long-term reliability.

Q3: How can I confirm it’s correct for my engine?

Check your owner’s manual or verify your engine’s serial number; if it falls in the correct range, this is the right belt.

Q4: Is this belt suitable for saltwater use?

Yes it’s built to withstand heat, moisture, and marine corrosion.

Q5: Is installation straightforward?

Yes. Most owners with basic tools can install it using the engine’s built-in tensioning system.

• Supersessions
  57-897574Q01, 57-897574Q01