Description
Mercury 85647 Impeller for 3.4L Carbureted TwoStroke Outboards
Help maintain proper cooling water flow with the Mercury Precision 85647 impeller. Designed for select Mercury and Mariner 3.4L carbureted TwoStroke outboards, this OEM impeller helps circulate water through the engine’s cooling passages to support reliable outboard temperature control during operation.
Key Features
- Genuine Mercury Precision water pump impeller
- Fits select Mercury and Mariner 3.4L 2-cycle carbureted outboards
- Helps circulate cooling water through the engine’s cooling passages
- Provides improved flexibility across a wide range of temperatures throughout the boating season
- Useful replacement during water pump service, impeller inspection, and cooling system maintenance
- Helps protect against overheating caused by worn, cracked, stiff, or damaged impeller vanes
- Mercury parts are engineered, tested, and manufactured for proper fit, function, and performance
Fitment / Product Details
- Brand: Mercury Precision
- Part Number: 85647
- BU Part ID: 85647
- Product Type: Water Pump Impeller / Cooling System Impeller
- Application: Select Mercury and Mariner 3.4L carbureted TwoStroke outboards
- Engine Types: Mercury and Mariner 3.4L 2-cycle carbureted outboards
- HP Range: Not provided; verify by 3.4L carbureted TwoStroke model, serial number, and water pump diagram
- Serial Ranges: Not provided; verify by outboard serial number and lower unit water pump parts diagram
- Year Range: Not provided; verify by model year, serial number, owner’s manual, or service manual
- UPC: 745061199392
- Country of Origin: US
- Prop 65: Not provided
- Package Dimensions: 4 in. L x 4 in. W x 1.38 in. H
- Package Weight: 0.125 lb
- Package Quantity: 1
- Brand Store Category: Parts
- Brand Store Subcategory: Water Pump Repair Kits & Impellers
- Supersedes / Replaces: Not provided
- Fitment Note: Confirm compatibility by Mercury part number, Mercury/Mariner 3.4L carbureted TwoStroke model, engine serial number, lower unit water pump assembly, owner’s manual, or service manual before ordering.
What’s Included
- One Mercury Precision 85647 water pump impeller
- Gaskets, wear plate, key, housing, seals, and additional water pump components are not included unless specifically stated by the seller
Expanded Fitment
- Select Mercury 3.4L carbureted TwoStroke outboards where impeller 85647 is specified
- Select Mariner 3.4L carbureted TwoStroke outboards where impeller 85647 is specified
- Water pump service applications requiring Mercury part number 85647
- Cooling system maintenance for compatible 3.4L 2-cycle carbureted outboards
- Not universal; verify exact fitment by model, serial number, and water pump parts diagram before ordering
Why You Should Buy
- OEM Mercury Precision impeller for reliable fit when matched to the correct 3.4L application
- Helps maintain cooling water flow through compatible Mercury and Mariner outboards
- Ideal replacement during seasonal maintenance, lower unit service, or impeller inspection
- Helps prevent overheating from worn, hardened, cracked, or damaged impeller vanes
- Compact single impeller replacement for targeted water pump service
Common Applications
- Mercury 3.4L carbureted TwoStroke impeller replacement
- Mariner 3.4L carbureted TwoStroke water pump service
- Outboard cooling system maintenance
- Lower unit water pump inspection
- Replacement of worn, stiff, cracked, or damaged impellers
FAQ
- What is Mercury 85647? It is a Mercury Precision water pump impeller for select Mercury and Mariner 3.4L carbureted TwoStroke outboards.
- What engines does this impeller fit? It fits select Mercury and Mariner 3.4L 2-cycle carbureted outboards where part number 85647 is specified.
- What does the impeller do? The impeller helps circulate cooling water through the engine’s cooling passages to support proper engine temperature control.
- Is this a complete water pump kit? No. This listing is for the impeller only unless the seller specifically states that additional parts are included.
- What is the UPC? The packaged UPC is 745061199392.
- When should the impeller be replaced? Replace it during scheduled maintenance, if water flow is weak, after overheating, or if the impeller vanes are worn, cracked, stiff, deformed, or missing.
- How do I confirm fitment? Confirm using Mercury part number 85647, your outboard model, serial number, lower unit water pump diagram, owner’s manual, or service manual.