SKU: 22877255503

Water Pump Repair Kit – Fits Mercury/Mariner Outboards 75-225HP & MerCruiser Alpha One Stern Drives (Replaces 96148Q8, 46-96148A8)

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Description

Water Pump Repair Kit – Fits Mercury/Mariner Outboards 75-225HP & MerCruiser Alpha One Stern Drives (Replaces 96148Q8, 46-96148A8)Water Pump Repair Kit Fits Mercury Mariner Outboards 75 225HP & MerCruiser Alpha One Stern Drives This water pump repair kit provides the essential components needed to restore the cooling system on a wide range of Mercury Mariner outboards and MerCruiser stern drives. It is designed for 75 225HP 2 Stroke outboards (4 cylinder and V6 models) and MerCruiser Pre Alpha, R, MR, and Alpha One stern drives (1970 1990) within the serial number range 2495186

Water Pump Repair Kit – Fits Mercury/Mariner Outboards 75-225HP & MerCruiser Alpha One Stern Drives

This water pump repair kit provides the essential components needed to restore the cooling system on a wide range of Mercury/Mariner outboards and MerCruiser stern drives. It is designed for 75-225HP 2-Stroke outboards (4-cylinder and V6 models) and MerCruiser Pre-Alpha, R, MR, and Alpha One stern drives (1970-1990) within the serial number range 2495186 to 0D469858.

Engineered as a direct replacement for multiple OEM part numbers, this kit ensures a precise fit and restores cooling performance. It is cross-compatible with Mercury parts 46-96148A8, 96148Q8, 96148T8, 96148B8, 96148A5, and Sierra parts 18-3217, 18-3316, 18-3517.

  • Complete Kit: Includes a neoprene rubber impeller, housing, gaskets, seals, and other necessary hardware for a full replacement.
  • Durable Materials: Features a marine-grade key plate, nylon PA66 plastic housing, and neoprene seals for longevity in marine environments.
  • Direct Installation: Designed to fit the original water pump housing without modifications; follow your factory service manual for installation.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number
Mercury 46-96148A8 / 96148Q8 / 96148T8 / 96148B8 / 96148A5
Quicksilver 96148Q8
Sierra 18-3217 / 18-3316 / 18-3517
Marinepro 96148Q8

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Mercury/Mariner Outboards

Brand Model Rated HP Stroke Years OEM Part No. Notes
Mercury/Mariner 4-Cylinder 65 2-Stroke Serial #1542745-3293183 46-96148A8
Mercury/Mariner 4-Cylinder 70 2-Stroke Serial #1503959-1566239 46-96148A8
Mercury/Mariner 4-Cylinder 75 2-Stroke Serial #6432901 & Up 46-96148A8
Mercury/Mariner 4-Cylinder 80 2-Stroke Serial #2559001-6432900 46-96148A8
Mercury/Mariner 4-Cylinder 85 2-Stroke Serial #1566240-4861998 46-96148A8
Mercury/Mariner 4-Cylinder 90 2-Stroke Serial #1766824 & Up 46-96148A8
Mercury/Mariner 6-Cylinder 100SS 2-Stroke Serial #1503332-2836018 46-96148A8
Mercury/Mariner 6-Cylinder 110 2-Stroke Serial #1870204-2314955 46-96148A8
Mercury/Mariner 6-Cylinder 115 2-Stroke Serial #2836019 & Up 46-96148A8
Mercury/Mariner 6-Cylinder 125 2-Stroke Serial #2314956-2839368 46-96148A8
Mercury/Mariner 6-Cylinder 135 2-Stroke Serial #2839369-3293233 46-96148A8
Mercury/Mariner 6-Cylinder 140 2-Stroke Serial #3293234 & Up 46-96148A8
Mercury/Mariner 6-Cylinder 150 2-Stroke Serial #3502806 & Up 46-96148A8
Mercury/Mariner 6-Cylinder 175 2-Stroke Serial #4301235 & Up 46-96148A8
Mercury/Mariner 6-Cylinder 200 2-Stroke Serial #4839034 & Up 46-96148A8 Not including V-200 DFI 3.0L
Mercury/Mariner 6-Cylinder 220 2-Stroke Serial #OB117316 & Up 46-96148A8
Mercury/Mariner V6 V150, V175, V200, V225 2-Stroke All 46-96148A8
Mercury/Mariner XR4/Magnum II All 2-Stroke All 46-96148A8

MerCruiser Stern Drives

Brand Model Years OEM Part No. Notes
MerCruiser Pre-Alpha 1970-1983 46-96148A8
MerCruiser R Up to 1983 46-96148A8
MerCruiser MR 1984-1985 46-96148A8
MerCruiser Alpha One 1983-1990 46-96148A8 Serial #2495186-0D469858

Technical Specifications

Specification Value
Product Type Water Pump Repair Kit
Installation Direct replacement; follow factory service manual
Connection Direct installation to water pump housing
Housing Material Marine grade key plate and cup, nylon PA66 plastic housing
Housing Color Black/Natural
Dimensions Package: 152mm × 101mm × 80mm (5.98" × 3.98" × 3.15")
Weight 0.30kg (10.72 oz)
Fitting Type Direct fit
Other Technical Attributes Neoprene rubber water pump impeller, CR neoprene rubber impeller seals

Package Contents

  • 1 x Water Pump Impeller (Replaces 46-96148A8)
  • 1 x Impeller Housing
  • 1 x Impeller Key
  • 1 x Face Plate
  • 2 x Gaskets
  • 1 x Seal
  • 1 x Water Tube Guide Sleeve
  • 1 x O-ring
  • 2 x Drain Plug Washers

Installation Guide

  1. Disconnect Power: Disconnect the battery before starting work.
  2. Drain Gear Lube: Drain the gear lube from the lower unit.
  3. Remove Lower Unit: Unbolt and carefully detach the lower unit (gearcase) from the outboard leg.
  4. Access Pump: Locate and unbolt the water pump housing.
  5. Remove Old Components: Remove the old housing, impeller, wear plate, gaskets, and seals. Note their orientation.
  6. Clean Surfaces: Thoroughly clean all mating surfaces, ensuring they are free of old gasket material and corrosion.
  7. Install New Components: Install the new gaskets, wear plate, and impeller key.
  8. Install Impeller: Slide the new impeller onto the driveshaft. Rotate the shaft clockwise while pushing down to seat the vanes correctly inside the housing.
  9. Secure Housing: Install the new housing and torque the bolts to the manufacturer's specified values.
  10. Reinstall Lower Unit: Reattach the lower unit to the engine leg and tighten all bolts securely.
  11. Refill and Test: Refill the lower unit with fresh gear lube. Reconnect the battery and test the engine's cooling system operation in water, checking for a strong tell-tale stream.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my Mercury engine?

A: Check the serial number of your engine. This kit fits specific serial ranges for 75-225HP 2-stroke outboards and MerCruiser Alpha One stern drives from 1970-1990 (serial #2495186-0D469858). Always refer to the detailed compatibility tables on this page to verify your specific model and serial number before ordering.

Q: What are the signs my water pump is failing?

A: Common signs of a failing water pump include the engine overheating (especially at idle or low speeds), a weak or non-existent water stream from the "telltale" outlet, or finding a brittle, cracked, or deformed impeller during a routine inspection.

Q: How often should I replace the water pump impeller?

A: For preventative maintenance, it is highly recommended to replace the water pump impeller every 1 to 2 years, or every 100-200 hours of operation. The interval may vary based on usage (e.g., saltwater vs. freshwater) and operating conditions.

Q: OEM vs. Aftermarket?

A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?

A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?

A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

  • Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
  • This product is an aftermarket replacement part and is not an OEM component.
  • Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

  • Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
  • Fast Global Shipping: Free delivery worldwide in 5–15 days.
  • Direct from Manufacturer: Competitive pricing without compromising quality.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 22877255503

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