Water Pump Impeller – Fits Mercury/Force/Chrysler 20-35 HP (Replaces 47-F462065)

Product Details

This high-pressure neoprene Water Pump Impeller – Fits Mercury/Force/Chrysler 20-35 HP (Replaces 47-F462065) is designed for reliable performance in 2-stroke outboard engines from 1976 to 1988. Engineered for durability, it ensures efficient water circulation to prevent overheating and maintain optimal engine temperature.

It serves as a direct replacement for multiple OEM and aftermarket part numbers, including Mercury/Force/Chrysler 47-F462065, Sierra 18-8901, and GLM 89615.

• Installation: Mounts inside the lower unit water pump housing.
• Material: Constructed from durable, high-pressure neoprene for longevity.
• Design: Features a 10-blade, short vane profile for consistent flow.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Engine & Model Compatibility

Confirm your engine model/year in the table below.

For Chrysler Outboards (1976–1984): This impeller fits a wide range of 20 HP, 25 HP, 30 HP, and 35 HP 2-stroke models. Verify your specific model code for a precise match.

For Force Outboards (1986–1988): Compatibility is limited to specific 35 HP 2-stroke models. Please check your full model number against the list.

Technical Specs

Product Type

Water Pump Impeller

Installation

Lower Unit Water Pump

Material

Neoprene

Design

High Pressure / Short Vane

Blade Count

10

Inside Diameter

16 mm (0.63")

Outside Diameter

57.3 mm (2.26")

Height

14.9 mm (0.59")

Weight

36 g (1.26 oz)

Warranty

1-Year (Typical for aftermarket parts)

What’s in the Box

• 1 x Water Pump Impeller (47-F462065)

Installation Notes

1. Disconnect the battery and shift the outboard into neutral.
2. Remove the lower unit (gearcase) by unbolting it from the engine's midsection.
3. Locate and unbolt the water pump housing on top of the gearcase.
4. Remove the old impeller, noting the direction its vanes are bent.
5. Clean the housing and inspect components for wear or damage. Lightly grease the interior.
6. Install the new impeller, turning the driveshaft clockwise to bend the vanes correctly.
7. Reinstall the water pump housing, gaskets, and seals.
8. Reattach the lower unit to the midsection and test the engine in water to confirm proper flow.

Troubleshooting & FAQ

Safety & Important Info

• Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
• This is an aftermarket replacement, not an OEM component.
• Professional installation is recommended for safety and performance.

About Sea Sierra

• Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
• Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
• Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.