Water Pump Service Kit – Fits Mercury/Mariner 65-220 HP 2-Stroke Outboards & MerCruiser I/R/MR/Alpha Drives (Replaces 96148A8)
Water Pump Service Kit – Fits Mercury/Mariner 65-220 HP 2-Stroke Outboards & MerCruiser I/R/MR/Alpha Drives (Replaces 96148A8) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Water Pump Service Kit – Fits Mercury/Mariner 65-220 HP 2-Stroke Ou...
Water Pump Service Kit – Fits Mercury/Mariner 65-220 HP 2-Stroke Outboards & MerCruiser I/R/MR/Alpha Drives (Replaces 96148A8) is backordered and will ship as soon as it is back in stock.
Product Details
This complete Water Pump Service Kit provides the components needed to service the upper water pump housing on a range of Mercury and Mariner 2-stroke outboards from 65 to 220 HP, as well as MerCruiser I, R, MR, and Alpha sterndrives within the listed serial-number range. It is intended for applications that use a short-vane impeller.
This kit is an aftermarket replacement for the listed Mercury, Quicksilver, and Sierra reference numbers. Confirm the engine model, serial number, impeller style, and original component configuration before ordering.
- Designed as a direct replacement for the applicable water pump service assembly.
- Includes a plastic pump housing assembly and related water-pump service components.
- Provides the principal wear items needed for a comprehensive upper pump assembly service.
Part Number Matrix
Use the following references to compare the applicable OEM and aftermarket numbers.
| Brand | Part Number |
|---|---|
| Mercury | 46-96148A8 |
| Quicksilver | 96148A8 |
| Sierra | 18-3320 |
Engine & Model Compatibility
Compatibility depends on the exact model, year, serial number, and water-pump configuration. Verify these details before installation.
Mercury/Mariner Outboards: Intended for applicable 2-stroke outboards from 65 to 220 HP that use a short-vane impeller.
MerCruiser Sterndrives: Intended for applicable I, R, MR, and Alpha drives within serial numbers 2491586 through 0D469858.
| Brand | Model | Rated HP | Stroke | Reference Part No. | Notes |
|---|---|---|---|---|---|
| Mercury/Mariner | 4-cylinder | 65-75 | 2-Stroke | 96148A8 | Confirm short-vane impeller configuration. |
| Mercury/Mariner | V6 | 75-220 | 2-Stroke | 96148A8 | Applicable models using short-vane impellers. |
| MerCruiser | I Drive | 96148A8 | Serial No. 2491586 through 0D469858. | ||
| MerCruiser | R Drive | 96148A8 | Serial No. 2491586 through 0D469858. | ||
| MerCruiser | MR Drive | 96148A8 | Serial No. 2491586 through 0D469858. | ||
| MerCruiser | Alpha Drive | 96148A8 | Serial No. 2491586 through 0D469858. |
Technical Specs
- Product Type
- Water Pump Service Kit
- Application
- Upper water pump housing service
- Installation
- Direct replacement for applicable assemblies
- Housing Material
- Plastic
- Housing Color
- Black
- Weight
- 0.60 lb (0.27 kg)
What’s in the Box
- 1 x Plastic Pump Housing Assembly
- 1 x Water Impeller
- 1 x Face Plate
- 1 x Gasket Set
- 1 x Drive Key/Pin
- 1 x Water Tube Guide Sleeve
- 1 x O-Ring Set
- 1 x Gear-Lubricant Fill and Vent Screw Seal Set
- 1 x Face Seal
- 1 x Seal Carrier
- 1 x Water Tube Coupling
Installation Notes
- Disconnect the battery and place the engine or drive in neutral.
- Drain the gearcase lubricant completely.
- Remove the lower unit or gearcase from the outboard or sterndrive.
- Unbolt and remove the existing water-pump housing assembly.
- Clean the mounting surfaces and inspect the driveshaft and related components.
- Install the kit components in the reverse order of disassembly, beginning with the impeller and housing.
- Make sure all gaskets, seals, and O-rings are correctly seated.
- Reinstall the lower unit, refill the gearcase with the specified lubricant, and reconnect the battery.
- Run the engine at idle and confirm that water is discharged from the tell-tale outlet.
Troubleshooting & FAQ
How do I confirm whether this kit fits my engine?
Compare the engine model, year, serial number, horsepower, stroke, and water-pump configuration with the compatibility information above. For MerCruiser drives, the serial-number range is particularly important. For Mercury and Mariner outboards, confirm that the application uses a short-vane impeller.
What are common signs of a failing water pump?
Possible symptoms include overheating at idle or low speed, a weak or absent tell-tale stream, and unusual heat or odor from the exhaust area. The impeller is a wear item and should be inspected periodically.
How often should the water-pump impeller be replaced?
Replacement intervals depend on operating conditions, service recommendations, and the impeller’s condition. Inspect it regularly and replace it sooner when operating in sandy or silty water or whenever damage, hardening, cracking, or loss of vane flexibility is found.
What is included in this service kit?
The kit includes the plastic housing assembly, impeller, face plate, gasket set, drive key or pin, water-tube guide sleeve, O-ring set, gear-lubricant screw seals, face seal, seal carrier, and water-tube coupling listed above.
Is this an OEM part?
This listing is for an aftermarket replacement, not a genuine OEM component. Compare the original part and application details before installation.
What are the shipping and warranty terms?
Typical transit is 5–15 days with standard shipping options shown at checkout. Warranty and return eligibility are subject to the applicable store policies; contact support with your order details if assistance is needed.
Safety & Important Information
- Verify the original part, model, year, serial number, and impeller configuration before ordering.
- This is an aftermarket replacement and is not an OEM component.
- Use the manufacturer’s service procedures and specified lubricants. Professional installation is recommended when required.
About Sea Sierra
- Pro-Grade Standards — Marine replacement parts selected for dependable service in real-world conditions.
- Fast Global Fulfillment — Standard delivery options are available to most regions.
- Manufacturer-Direct Value — Competitive pricing focused on practical replacement solutions.
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