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Water Pump Impeller Kit for Mercury Mariner 4 4.5 7.5 9.8 HP 46-70941A3 18-3446
$54.99
Sale price
$54.99
Regular price
Available to Order
This Water Pump Impeller Kit is a replacement impeller kit for Mercury Mariner outboard motors rated at 4, 4.5, 7.5, and 9.8 HP, and matches OEM Part# 46-70941A3 and 18-3446.
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Product Overview
This water pump impeller kit provides a direct replacement for the cooling system impeller in Mercury Mariner outboards from 4 to 9.8 HP. It ensures proper water circulation to prevent overheating and maintain engine performance. The kit includes the impeller and necessary gaskets for a complete rebuild.
Key Features & Performance
- Premium rubber impeller for reliable water pump operation
- Includes impeller, housing gasket, and key components
- Direct replacement for Mercury Mariner 4/4.5/7.5/9.8 HP outboards
- OEM cross-reference: 46-70941A3, 18-3446
- Restores proper cooling system performance
Fitment & Compatibility
- Mercury Mariner 4 HP outboard
- Mercury Mariner 4.5 HP outboard
- Mercury Mariner 7.5 HP outboard
- Mercury Mariner 9.8 HP outboard
Common Uses
- Replace worn water pump impeller during routine maintenance
- Prevent engine overheating in saltwater or freshwater operation
- Rebuild cooling system after impeller damage or age
- Restore water flow in small outboard motors
Technical Specifications
- Part Number(s): 46-70941A3, 18-3446
- Material: Rubber impeller with stainless steel inserts
- Application: Mercury Mariner 4-9.8 HP outboards
Frequently Asked Questions
Q: Will this impeller kit fit my Mercury Mariner 8 HP outboard? A: This kit is designed for 4, 4.5, 7.5, and 9.8 HP models only; please verify your exact HP rating.
Q: Does the kit include the housing or just the impeller? A: The kit includes the impeller, gasket, and key components but not the pump housing.
Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.