Mercury – Water Pump Repair Kit | Cooling System Service | Multi-Piece OEM Kit | 89983Q1

Overview

When you rely on a mid-range Mercury or Mariner outboard, you learn quickly that cooling performance isn’t something you gamble with. These engines work hard pushing fishing rigs, river boats, pontoons, and jet-drive setups through skinny water and shifting currents. Over time, silt, sand, and debris grind away at the water pump’s internal parts. Before you know it, the telltale weakens, temperatures creep up, and the motor starts telling you it needs attention. The Quicksilver 89983Q1 Water Pump Repair Kit gives you the peace of mind that comes from restoring the entire cooling section, not just the impeller. It’s the kind of maintenance that keeps an engine running cool, steady, and ready for long days on the water.

Key Features

• Nine-piece OEM water pump repair kit for Mercury and Mariner 30–70 HP outboards and select jet-drive outboards
• Includes gaskets, o-rings, face plate, drive key, impeller, and seat assemblies for a complete rebuild
• Elastomer impeller vanes maintain flexibility across wide temperature swings
• Designed for long-lasting performance and consistent cooling flow
• Engineered to Mercury Marine OEM specifications for proper fit and dependable operation

Engine & Boat Compatibility

Compatible with a large range of Mercury and Mariner models, including:

• 30–70 HP two-cycle outboards
• 30 HP Jet (USA serial 0C159200–0G589999)
• 35 HP two-cycle (USA 6445653+, BEL 9384476+, CAN 7209608+)
• 40 HP two-cycle (2-cylinder through 1983; 4-cylinder 0C159200+)
• 45 HP two-cycle (4-cylinder)
• 50 HP two-cycle (4-cylinder with plastic pump housings)
• 50–60 HP two-cycle (3-cylinder)
• 70 HP two-cycle (3-cylinder across multiple regions)

Common boat types:

• River jet boats
• Aluminum fishing boats
• Utility skiffs
• Bay boats and nearshore setups
• Older family runabouts

Performance & Practical Benefits

There’s something reassuring about knowing your engine is getting the cooling volume it was designed for. Rebuilding the entire pump instead of swapping a single impeller restores the tight, smooth operation of the system. Fresh gaskets seal properly. The new face plate creates a flat, clean surface for the impeller sweep. The drive key grips firmly so the vanes maintain strong rotation without slipping.

Out on the water, the difference shows up fast—stronger telltale, cooler operating temps, steadier idle, and better confidence when you’re pushing upriver or cruising long stretches. Because the elastomers in the impeller handle heat and cold without stiffening or tearing, you get reliable flow whether you're launching at daybreak or running home in afternoon heat.

This kit is especially valuable for engines used in shallow rivers where sand and fine debris wear parts faster. A full pump rebuild eliminates hidden weak points, turning a simple maintenance job into real long-term protection for your outboard.

Why Buy OEM

Genuine Mercury Marine parts are built with marine-specific materials and exact tolerances that aftermarket kits rarely match. The vanes, seats, and gaskets are engineered to work together, restoring the pump to its original performance level—not an approximate version of it. OEM also means easier installation, longer lifespan, and confidence that you’re not risking overheating or premature wear. If you want your Mercury or Mariner engine to stay dependable season after season, OEM is the only choice that truly makes sense.

FAQ

Q1: Which engines does this kit fit?

It fits Mercury and Mariner 30–70 HP outboards and select jet-drive models. Matching serial numbers is the best way to confirm.

Q2: What makes this kit better than aftermarket?

OEM parts maintain proper clearances, materials, and flow rates that protect your engine and restore factory-level cooling.

Q3: How do I know if it’s the correct kit?

Compare the part number to your manual or match your engine horsepower and serial number range.

Q4: Is it suitable for freshwater and saltwater?

Yes. Just flush after saltwater use to extend longevity.

Q5: Is installation straightforward?

Most owners with basic tools and a service manual can complete the job in under an hour.