Description

Mercury MerCruiser Quicksilver 47-43026T2 is a genuine-style water pump impeller used to supply cooling water through select Mercury outboard and MerCruiser stern drive water pump systems. Mercury’s current product reference lists 43026T2 for Mercury OptiMax 75–115 HP 2-stroke outboards, Mercury 30–350 HP 4-stroke outboards, and MerCruiser Alpha One Gen II and Vazer sterndrives. The impeller is designed for durability, cooling-water flow, and reliable flexibility across normal boating-season temperature ranges.

Key Features

• Water pump impeller for select Mercury outboards and MerCruiser stern drives
• Helps provide cooling-water flow to protect the engine from overheating
• Flexible impeller elastomer supports reliable operation across a broad temperature range
• Center insert is designed to resist tearing during operation
• OEM Mercury / Quicksilver reference: 47-43026T2 / 43026T2
• Common catalog specs show approximately 6 blades, 7/8 in. shaft insert diameter, 1-15/64 in. height, and 3-15/32 in. outside diameter.

Engine Compatibility

This impeller is listed by Mercury for Mercury OptiMax 75–115 HP 2-stroke outboards, Mercury 30–350 HP 4-stroke outboards, and MerCruiser Alpha One Gen II and Vazer sterndrives. Aftermarket interchange references also commonly associate this impeller family with Alpha I Gen II serial number D494569 and above, Vazer, 30/40/45/50/60 HP 4-stroke BigFoot applications, 75–125 HP 3- and 4-cylinder applications from serial range A996142 and up, 75/90/115 HP 4-stroke, 150 EFI 4-stroke, V-200 3.0L DFI, and V-225/V-250 3.0L applications.

Serial Number Fitment Notice

Water pump impeller fitment depends on the exact engine, drive model, gear housing, water pump housing, and serial number range. Always confirm compatibility using the Mercury or MerCruiser serial number before ordering, especially when comparing 47-43026T2 against related references such as 43026Q02 or aftermarket interchange numbers.

When This Part Needs Replacement

Replace the impeller during scheduled water pump service, after overheating, after running in sandy or silty water, after dry running, or whenever the impeller vanes are cracked, stiff, deformed, missing, or no longer spring back properly. A worn impeller can reduce cooling-water flow and may lead to overheating.

Installation Notes

Inspect the water pump housing, wear plate, gaskets, key, and seals during installation. Replace any worn or damaged water pump components at the same time to avoid reopening the lower unit. Lubricate the impeller as specified in the service manual and rotate it in the correct direction during installation so the vanes set properly inside the pump housing.

Alternate / Superseded Part Numbers

• 47-43026T2
• 43026T2
• 47-430261
• 47-430262
• 47-430264
• 47-43026B2
• 8M0025709
• Quicksilver 43026Q02 / 47-43026Q02 — related reference; confirm by serial number before substituting
• Sierra 18-3056
• GLM 89630
• Mallory 9-45307
• Honda 19210-ZW1-303 — aftermarket interchange reference only

Parts Desk Insight

This impeller covers a wide range of Mercury and MerCruiser applications, but the safest match is still by serial number and water pump assembly. If the pump housing or wear plate shows scoring, replacing only the impeller may not fully restore cooling performance.

Shipping: Ships same or next day for fast Canada wide shipping.