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96148Q8 Water Pump Impeller Kit and 89984 Impeller Compatible with Mercruiser Pre-Alpha Alpha one Stern Drives Mercury Mariner 2-strokes Outboards 46-96148Q8 46-96148A8

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About this item

  • This is a Complete Water Pump Repair Kit for Mercury Mariner 2 Strokes Outboard, MerCruiser Alpha One Sterndrive. The Pump Circulates Coolant Via Centrifugal Force a Belt Attached to Both The Pump and The Crankshaft Keeps The Pump Spinning
  • Compatible with Mercury Mariner 2-strokes Outboards, Mercruiser Stern Drives 1970-1983 Pre-Alpha, 1983-1990 Alpha One, 65hp (Serial # 1542745-3293183) 4 Cyl, 70hp (Serial # 1503959-1566239) 4 Cyl, 75hp (Serial # 6432901 & Up) 4 Cyl, 80hp (Serial # 2559001-6432900), 85hp (Serial # 1566240-4861998), 90hp (Serial # 1766824 & Up), 100hp SS (Serial # 1503332-2836018), 110hp (Serial # 1870204-2314955), 115hp (Serial # 2836019 & Up) 6 Cyl
  • Replaces Mercury Mariner 46-96148A8, 46-96148Q8, 46-96148T8, 46-9614888, 46-96148A5, 46-96148B8, 60367A4, 60367A1, 48747A3, 44292A4, 42579A4, 57234A3, 96148B5, 73804A3, 73802A3, 58618A4, 64141A11, 78400A2, 69222A3, 37433A1, 32437A3, 32437A1
  • The Water Pump Ensures That Enough Coolant Liquid is Flowing Ground The Cooling System and Engine in Order to Remove Sufficient Heat to Prevent The Engine Overheating. The Higher the Load on The Engine, The More The Pump Will Circulate in order to Deal With The Greater Levels of Heat Produced as the Engine Works Harder
  • Package Contains:Water Pump Impeller, Pump upper Housing, Water Pump Gasket, Water Pump Base Gasket, Impeller Plate, O-Ring, Water Tube Guide, Seal Ring Gasket, Drain Screw Gasket, Impeller key and Screw


Product Description

NorthBoat
mercury marine parts lower unit

Water Pump Impeller Kit and 89984 Impeller Compatible with Mercruiser Pre-Alpha Alpha one Stern Drives Mercury Mariner 2-strokes Outboards

Fits the Following Models:

  • For MerCruiser
  • For Mercruiser Pre-Alpha 1970-1983
  • For Mercruiser Alpha One 1983-1990
  • For Mercury 2 - Stroke Outboards
  • For Mercury Outboard 75hp (Serial # 6432901 & Up) 4 Cyl
  • For Mercury Outboard 85hp (Serial # 1566240-4861998)
  • For Mercury Outboard 115hp (Serial # 2836019 & Up) 6 Cyl
  • For Mercury Outboard 125hp (Serial # 2314956-2839368)
  • For Mercury Outboard 65hp (Serial # 1542745-3293183) 4 Cyl

Also Fits the Following Models:

  • For Mercury Outboard 135hp (Serial # 2839369-3293233)
  • For Mercury Outboard 175hp (Serial # 4301235 & Up)
  • For Mercury Outboard 70hp (Serial # 1503959-1566239) 4 Cyl
  • For Mercury Outboard 80hp (Serial # 2559001-6432900)
  • For Mercury Outboard 90hp (Serial # 1766824 & Up)
  • For Mercury Outboard 100hp SS (Serial # 1503332-2836018)
  • For Mercury Outboard 110hp (Serial # 1870204-2314955)

Also Fits the Following Models:

  • For Mercury Outboard 140hp (Serial # 3293234 & Up)
  • For Mercury Outboard 150hp (Serial # 3502806 & Up)
  • For Mercury Outboard 200hp (Serial # 4839034 & Up) not including V-200 DFI 3.0L
  • For Mercury Outboard 220hp (Serial # OB117316 & Up）

How Does a Water Pump Work?

The water pump ensures that enough coolant liquid is flowing around the cooling system and engine in order to remove sufficient heat to prevent the engine overheating. The higher the load on the engine, the more the pump will circulate in order to deal with the greater levels of heat produced as the engine works harder.

Inside the pump is an impeller (which might be made of either metal or plastic) with blades that push the coolant through the pump and out around the engine. The impeller is then mounted on a shaft with a seal assembly supporting it and allowing it to work without being impeded in any way.

The pump circulates coolant via centrifugal force – a belt attached to both the pump and the crankshaft keeps the pump spinning. If the engine overheats, it can break down completely and be extremely expensive to repair, which is why the pump is so important in getting the coolant to the places it needs to get to. Once it has circulated through the engine, the coolant goes to the radiator to be cooled down before returning to the pump to be circulated once more

alpha one gen 1 impeller kit

Can Northboat Fix My Water Pump?

If you want to avoid expensive mechanic bills but don’t have the technical knowledge or experience needed to resolve a leaking water pump in any other way, Northboat is the option for you – it can fix most leaks in the water pump casing and in the seals.


John Mota
Reviewed in the United States on June 2, 2025
Perfect match and ultra-complete impeller kit for Mercury 200 Black Max. All parts seem to be of good quality and individual parts are easily identified and packaged.