QUICKMARINER Water Pump Impeller Kit for Mercury/Mariner Outboards Model 30-300 HP, Neoprene 6-Blade with Nylon Hub

If your outboard's cooling performance has dropped or you’re doing scheduled maintenance, this kit supplies the rubber impeller, gaskets and driveshaft key sized for many Mercury Marine and Mariner lower gearcase models. The parts match common OEM numbers and include a neoprene impeller with hardened nylon core and all necessary sealing pieces to restore water flow through the pump housing.

Which engines and models does this kit fit?

This QUICKMARINER 43026T2 assembly is compatible with a broad range of Mercury/Mariner and Force outboards and some Mercruiser drives. It covers 2- and 4-stroke outboards in the 30–300 HP range and lists many cross-reference part numbers used by OEM and aftermarket suppliers.

• Fits Mercury/Mariner/Force lower gearcase models 30–300 HP (2/4-stroke, Verado compatible).
• Compatible with Alpha One Gen II S/N D494569 & above Mercruiser Vazer stern drives.
• Cross-replaces Mercury parts: 47-43026, 43026, 47-430261, 430261 and related suffix variants.

What components are included and what are the impeller specifications?

The kit contains the core components required for a pump rebuild: a neoprene impeller, several gaskets, and the driveshaft key. The impeller’s dimensions and construction are specified so you can confirm fit before installation.

• Includes rubber impeller 18-3056, gaskets 27-8172771 / 18-2566 / 27-430331 and driveshaft key 28-8M0032833.
• Impeller size: shaft 22.4 mm (0.88 in), outer diameter 88.0 mm (3.46 in), thickness 33.0 mm (1.30 in).
• Six blades made from neoprene with a hardened nylon hub for durability and flexibility.

How does replacing the impeller help boat performance and maintenance?

Replacing a failing impeller helps restore consistent cooling water flow, which is essential for safe engine operation and to avoid overheating. Regular replacement as part of preventive maintenance reduces the risk of in-season breakdowns and keeps aftermarket repair costs lower than major engine repairs.

• Restores reliable raw-water circulation to protect the engine from thermal stress.
• Prevents cavitation and blade tear that occur with hardened or cracked impellers.
• Includes gaskets and key so you can reseal the pump and align the shaft in one service job.

Who this is for: This impeller kit is aimed at boat owners, mechanics and marina technicians who maintain Mercury/Mariner/Force outboards or compatible Mercruiser drives and need a direct-fit replacement for routine water pump service. It’s appropriate for DIYers comfortable with lower gearcase removal and for shops stocking high-coverage repair parts for multiple horsepower classes.