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

Product Details

This Water Pump Impeller – Fits Mercury/Force/Chrysler 20-35 HP (Replaces 47-F462065) is engineered for 2-stroke Mercury Marine, Force, and Chrysler outboard engines from 20 to 35 HP, model years 1976–1988. It plays a crucial role in the engine cooling system by circulating water to prevent overheating.

It serves as a direct replacement for multiple OEM and aftermarket part numbers, including Mercury/Force/Chrysler 47-F462065, Sierra 18-8901, Mallory 9-45000, GLM 89615, SEI 96-799-03C, CEF 500335, and SouthMarine 17IC002.

• Installation: Mounts inside the lower unit water pump housing.
• Material: Constructed from durable, high-pressure neoprene for reliable performance.
• Installation Note: Lubricate with silicone grease, glycerine, or dish soap (not included) during installation to prevent damage.

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.

Compatible with a range of Chrysler and Force outboard models from the specified years.

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)

What’s in the Box

• 1 x Water Pump Impeller (Replaces 47-F462065)

Installation Notes

1. Disconnect the battery and remove the propeller before beginning service.
2. Drain the gearcase lubricant from the lower unit.
3. Unbolt and remove the lower unit from the outboard engine.
4. Locate and remove the water pump housing cover.
5. Inspect the old impeller for wear, cracks, or damage, and remove it from the driveshaft.
6. Clean the inside of the pump housing and inspect the wear plate for scoring or damage. Replace if necessary.
7. Apply a liberal amount of silicone grease, glycerine, or dish soap to the inside of the pump housing and to the new impeller.
8. Slide the new impeller onto the driveshaft, rotating the shaft in the direction of engine operation to help seat the blades correctly.
9. Reinstall the water pump housing and torque its bolts to manufacturer specifications.
10. Reattach the lower unit, refill with fresh gear lube, and reinstall the propeller.
11. Reconnect the battery and test the engine's cooling system function.

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.