Sierra 18-3265 Impeller Repair Kit, Replaces Mercury 47-43026Q06, for 4-Stroke Verado 135-275 HP Outboards

The Sierra 18-3265 Impeller Repair Kit is a water pump service kit built to restore cooling system performance on Mercury 4-Stroke Verado outboards. The kit is engineered to be interchangeable with the original equipment impeller assembly, giving boat owners and marine technicians a direct service solution when a water pump impeller has worn out, cracked, or lost its ability to circulate cooling water efficiently.

Constructed with stainless steel components for durability in a marine environment, the kit is intended for water pump service on Mercury 135, 150, and 175 horsepower 4-Stroke Verado outboards with serial number 1B227000 and up, 200 and 225 horsepower 4-Stroke Verado outboards with serial number OT980000 and up, and 250 and 275 horsepower 4-Stroke Verado outboards with serial number OT801000 and up. It is designed to replace Mercury Marine impeller components 47-43026Q06, 47-43026T11, and 47-8M0100526, making it a straightforward match for technicians performing routine water pump maintenance or troubleshooting overheating issues on these outboard models. Regular impeller replacement helps prevent engine overheating and protects the outboard's cooling system components from premature wear.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-3265
• Product Type: Impeller Repair Kit
• Material: Stainless Steel
• Weight: 0.55 pounds
• Vehicle Service Type: Boat
• Application: Mercury 4-Stroke Verado Outboard Water Pump Service

Fitment

• Mercury 135/150/175 4-Stroke Verado (S/N 1B227000 & Up)
• Mercury 200/225 4-Stroke Verado (S/N OT980000 & Up)
• Mercury 250/275 4-Stroke Verado (S/N OT801000 & Up)

Replaces (OEM)

• 47-43026Q06
• 47-43026T11
• 47-8M0100526

Frequently Asked Questions

What does the Sierra 18-3265 Impeller Repair Kit fit? This kit fits Mercury 135, 150, and 175 horsepower 4-Stroke Verado outboards with serial number 1B227000 and up, 200 and 225 horsepower 4-Stroke Verado outboards with serial number OT980000 and up, and 250 and 275 horsepower 4-Stroke Verado outboards with serial number OT801000 and up.

Which OEM part numbers does the 18-3265 kit replace? The Sierra 18-3265 replaces Mercury Marine impeller part numbers 47-43026Q06, 47-43026T11, and 47-8M0100526.

Is the Sierra 18-3265 a genuine Mercury part or an aftermarket kit? The 18-3265 is a Sierra-branded aftermarket impeller repair kit built to be interchangeable with the listed Mercury Marine OEM part numbers, not an original Mercury-branded part.

What material is the impeller in the 18-3265 kit made from? The Sierra 18-3265 Impeller Repair Kit uses stainless steel components.

How much does the Sierra 18-3265 kit weigh? The Sierra 18-3265 Impeller Repair Kit weighs 0.55 pounds.

Can I use the 18-3265 kit to check my serial number range before ordering? Yes, checking your outboard's serial number is important because the Sierra 18-3265 is designated for specific Verado serial number ranges depending on horsepower: S/N 1B227000 and up for 135/150/175 HP, S/N OT980000 and up for 200/225 HP, and S/N OT801000 and up for 250/275 HP.

Does the 18-3265 kit work on non-Verado Mercury outboards? No, the Sierra 18-3265 Impeller Repair Kit is specified for Mercury 4-Stroke Verado outboards in the listed horsepower and serial number ranges only.

Why would I need to replace the impeller with the 18-3265 kit? A worn or damaged water pump impeller can reduce cooling water flow and lead to engine overheating, so replacing it with the Sierra 18-3265 kit is a routine maintenance step for keeping the cooling system working properly.

Is the Sierra 18-3265 kit specific to one engine horsepower, or does it cover multiple? The 18-3265 kit covers multiple Mercury 4-Stroke Verado horsepower ranges, including 135/150/175 HP, 200/225 HP, and 250/275 HP, each tied to a specific serial number range.

Will the 18-3265 kit cross-reference correctly if I search by my old Mercury part number? Yes, the Sierra 18-3265 is built to match Mercury Marine part numbers 47-43026Q06, 47-43026T11, and 47-8M0100526, so searching by any of those numbers should lead to this kit.