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

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

This water pump impeller is designed for Mercury/Force/Chrysler 20-35 HP, 2-Stroke outboard engines from 1976–1988. It serves as a direct-fit replacement, ensuring reliable performance for your engine's cooling system.

This component is a direct replacement for the following OEM and aftermarket part numbers: Mercury/Force/Chrysler 47-F462065, Sierra 18-8901, Mallory 9-45000, GLM 89615, SEI 96-799-03C, CEF 500335, and SouthMarine 17IC002.

• Core Material: High-pressure neoprene for durability and performance.
• Installation Location: Mounts inside the lower unit water pump housing.
• Design: Features a 10-blade, short-vane design for efficient water flow.

Part Number Cross-Reference

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

Compatible Engine Models

Confirm your engine model/year in the table below.

Chrysler Models

Force Models

Technical Specifications

Package Contents

• 1 x Water Pump Impeller (47-F462065)

Installation Guide

1. Safety First: Disconnect the engine's battery and ensure the work area is secure.
2. Shift to Neutral: Place the outboard motor in the neutral gear position.
3. Detach Lower Unit: Loosen and remove the bolts securing the lower unit (gearcase) to the engine. Carefully separate it.
4. Access Pump Housing: Locate the water pump assembly on top of the lower unit and remove its mounting bolts.
5. Remove Old Impeller: Lift the pump housing and slide the old impeller off the driveshaft. Take note of the direction the vanes are bent.
6. Clean and Inspect: Thoroughly clean the inside of the pump housing and wear plate. Check for scoring, warping, or damage.
7. Install New Impeller: Lightly lubricate the new impeller and housing. Slide the new impeller onto the driveshaft while turning the shaft clockwise to correctly bend the vanes.
8. Reassemble Housing: Reinstall the water pump housing, ensuring gaskets are aligned, and tighten the bolts to the manufacturer's specified torque.
9. Reattach Lower Unit: Guide the lower unit back into place, aligning the driveshaft and water tube. Secure it with the mounting bolts.
10. Test Operation: Reconnect the battery. With the outboard in water or connected to a flush device, start the engine and check for a strong, steady stream from the cooling system's tell-tale outlet.

Troubleshooting & FAQ

How do I confirm this impeller fits my engine?
First, check your engine's model, year, and horsepower against the "Compatible Engine Models" table. Second, verify your existing part number matches one of the numbers in the "Part Number Cross-Reference" list. This ensures an accurate fit.

What are the signs of a failing water pump impeller?
Common symptoms include the engine overheating at idle or low speeds, a weak or intermittent water stream from the "tell-tale" outlet, and visible cracking or brittleness on the old impeller's blades upon inspection.

How often should I replace the impeller?
For preventative maintenance, it is recommended to replace the impeller every 1-2 years or every 100-200 hours of use. Replacement intervals should be shorter in saltwater or silty/sandy conditions.

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.