Water Pump Impeller Kit – Fits Mercury/Mercruiser 65–225 HP (Replaces 47-89984T5)

Vendor: JLM Marine
Availability: In Stock
Product Type: Water Pump Impeller Kit
$38.50
$38.50
Subtotal: $38.50

Free Shipping

Free standard shipping on all orders under 1 KG

Worry-Free Returns

Learn More.
Water Pump Impeller Kit – Fits Mercury/Mercruiser 65–225 HP (Replaces 47 - 89984T5) - JLM Marine Boat Parts Limited

Water Pump Impeller Kit – Fits Mercury/Mercruiser 65–225 HP (Replaces 47-89984T5)

$38.50

Water Pump Impeller Kit – Fits Mercury/Mercruiser 65–225 HP (Replaces 47-89984T5)

$38.50

Water Pump Impeller Kit – Fits Mercury/Mercruiser 65–225 HP (Replaces 47-89984T5)

This water pump impeller kit is designed for a wide range of Mercury/Mercruiser and Force/Chrysler outboard engines. It fits most 65–225 HP 2-stroke Mercury/Mercruiser models from the 1960s to the 1990s, as well as Alpha One, MR, and pre-Alpha sterndrive units (serial numbers 2495186–0D469858). It is also compatible with 65–225 HP Force/Chrysler outboards that use short-vane impellers.

This kit serves as a direct replacement for multiple OEM and aftermarket part numbers, including Mercury 47-89984T5, 47-89984T4, 47-89984T6, and 47-89984Q5, as well as Sierra 18-3517, GLM 12120, Mallory 9-48307, and Sierra 18-3017.

  • Installation: Direct OEM replacement designed for a precise fit.
  • Core Component: Features a durable 6-blade neoprene rubber impeller with a brass hub.
  • Complete Kit: Includes the impeller, face plate, gaskets, drive key, seals, and O-rings for a comprehensive service.

Part Number Cross-Reference

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

Brand Part Number
Mercury 47-89984T5 / 47-89984T4 / 47-89984T6 / 47-89984Q5
Sierra 18-3517 / 18-3017
GLM 12120
Mallory 9-48307

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/Mercruiser Outboard Models

Model Rated HP Stroke Years OEM Part No. Notes
65 HP (4 cylinder) 65 2-Stroke 1963-1976 47-89984T5 Serial 2803562-2874263, 2997439-3293183
70 HP 70 2-Stroke 1961-1967 47-89984T5 Serial 1413611-1436114, 1482212-1503458
700 E-2 (6 cyl) 70 2-Stroke 47-89984T5
75 HP (4 cyl) 75 2-Stroke 1984-1988 47-89984T5 Serial 6432901 & UP
80 HP 80 2-Stroke 1969-1983 47-89984T5 Serial 1355468-3493912
80 HP (6 cyl) 80 2-Stroke 47-89984T5 Serial 1335465-1398629
80 HP (4 cyl) 80 2-Stroke 47-89984T5 Serial 4831999-6432900
85 HP (4 cyl) 85 2-Stroke 1973-1977 47-89984T5 850XS models
850 E & EL (6 cyl) 85 2-Stroke 47-89984T5 Models E-1, EL-1
850 XS (4 cyl) 85 2-Stroke 47-89984T5 Serial 3493913-4831998
90 HP (6 cyl) 90 2-Stroke 1978-1986 47-89984T5 Serial 4845301 & UP
95 HP (6 cyl) 95 2-Stroke 1966-1967 47-89984T5
100 HP (1000SS) 100 2-Stroke 1962-1969 47-89984T5
105 HP JET 105 2-Stroke 1994-1995 47-89984T5
110/115/125/135/140/150 HP (6 cyl) 110-150 2-Stroke 1966-1988 47-89984T5 Models 1100/1150/1250/1350/1400/1500
V135 CARB 135 2-Stroke 1986-1988 47-89984T5
V135 EFI 135 2-Stroke 1998 47-89984T5
140 JET 140 2-Stroke 1994-1995 47-89984T5
V150 CARB 150 2-Stroke 1978-1985 47-89984T5
V150 CARB/EFI/DFI 150 2-Stroke 1986-1988 47-89984T5
V150 XR2/4/6, Mag II 150 2-Stroke 1978-1988 47-89984T5
V175 (V1750) 175 2-Stroke 1976-1988 47-89984T5
V175/V200 CARB/EFI/DFI 175-200 2-Stroke 1985-1988 47-89984T5
V200 200 2-Stroke 1978-1981 47-89984T5
V220 LASER 220 2-Stroke 47-89984T5
V225 2.4L 225 2-Stroke 47-89984T5

Mercruiser Sterndrive Models

Model Years OEM Part No. Notes
MerCruiser I (MC1) 47-89984T5 S/N 2495186 & Later
MerCruiser R 47-89984T5
MerCruiser MR 47-89984T5
Alpha One Up to 1990 47-89984T5 S/N range 6854393-0D469858

Technical Specifications

Product Type Water Pump Impeller Kit
Installation Direct OEM replacement
Connection Direct drive shaft mount
Dimensions Impeller diameter: 59.6 mm (2.35 in)
Impeller height: 33.6-33.8 mm (1.32-1.33 in)
Hub shaft diameter: 22.2 mm (0.87 in)
Weight 99.3 g (3.5 oz)
Fitting Type Direct shaft mount
Other Technical Attributes 6 blade impeller design made of neoprene rubber with brass hub

Package Contents

  • 1 x Water Pump Impeller (Replaces 47-89984, 47-30221, 47-65960, 47-85460)
  • 1 x Face Plate with Gaskets
  • 1 x Drive Key or Pin (Replaces 28-56654)
  • 1 x Water Tube Guide Sleeve
  • Multiple "O" Rings (exact quantity may vary by kit)
  • 2 x Gearlube Fill & Vent Screw Seals

Installation Guide

  1. Disconnect the negative battery cable to prevent accidental starting.
  2. Place a drain pan under the lower unit and remove the gearlube drain/vent screws to empty the gear oil.
  3. Remove the bolts that attach the lower unit (gearcase) to the engine's upper housing.
  4. Carefully separate the lower unit from the engine. You may need to disconnect the speedometer tube if equipped.
  5. Locate the water pump assembly on top of the gearcase and remove the bolts securing its housing.
  6. Lift the pump housing and slide the old impeller off the drive shaft. Take note of the rotational direction of the vanes.
  7. Wipe the housing interior and face plate clean. Inspect for scoring, warping, or corrosion and replace if damaged.
  8. Install the new drive key, gaskets, and seals from the kit onto the drive shaft and base plate.
  9. Slide the new impeller onto the drive shaft, turning the shaft clockwise to bend the vanes into the correct orientation.
  10. Reinstall the water pump housing and tighten the bolts to the manufacturer's specified torque.
  11. Reattach the lower unit to the engine and refill the gearcase with fresh marine gear lubricant.
  12. Reconnect the battery, start the engine in a water supply, and confirm a strong, steady stream from the tell-tale outlet.

Troubleshooting & FAQ

How do I confirm this impeller kit fits my Mercury engine?

This kit fits a wide range of Mercury/Mercruiser outboards (65–225 HP, '60s–'90s) and Alpha One/MR sterndrives (serial # 2495186–0D469858). The best method is to check your model, HP, and serial number against the detailed compatibility tables on this page. You can also cross-reference your existing part number with those listed, such as Mercury 47-89984T5.

What are the signs that my water pump impeller needs to be replaced?

Common signs of a failing impeller include a weak or non-existent water stream from the "tell-tale" outlet, the engine overheating at idle or low speeds, or a high-temperature alarm sounding. Visually, a worn impeller will have cracked, brittle, or permanently bent vanes.

How often should I replace the water pump impeller?

As a preventative maintenance item, it is generally recommended to inspect the impeller annually and replace it every 1-2 years or every 100-200 hours of use, depending on operating conditions. More frequent replacement may be needed if you operate in sandy, silty, or saltwater environments.

OEM vs. Aftermarket?

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.

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

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.

What is your warranty and return policy?

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.

We can ship to virtually any address in the world with free shipping available for most regions.

For our typical US and Canadian customers , our shipping timeframes are as follows:

  • Amazon FBA: orders will be delivered within 1-5 business days after placing the order (during certain special periods such as major promotions, Christmas, etc., the delivery time of Amazon FBA may be affected).
  • US warehouse shipment: orders will be delivered within 5 days after placing the order.
  • China warehouse shipment: orders will be delivered about 12 days after placing the order.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.

As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.

We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.

Exclusive for new customers

10% OFF

Enter the discount code “WELCOMEJLM” on the checkout page to receive your exclusive new customer discount!

Recently Viewed Products