Impeller with Key for Yamaha DT40 DT55 DT60 DT65 | JLM Marine

Replacement Rubber Impeller with Key – Fits Yamaha 2-Stroke DT40, DT55, DT60, DT65 (1983–1997)

This aftermarket rubber impeller is precision-engineered to fit Yamaha 2-stroke outboard engines in the DT series, including DT40, DT55, DT60, and DT65 models manufactured between 1983 and 1997. Designed to meet OEM specifications, this impeller ensures reliable water pump performance and optimal engine cooling.

A critical component of your outboard's cooling system, this impeller replaces worn or damaged units to restore proper water flow and prevent overheating. Each kit includes the impeller and drive key/pin for a complete, straightforward replacement.

• Includes rubber impeller with drive key/pin for immediate installation
• Restores proper water circulation and cooling system performance
• Built to OEM specifications for reliable fit and function

Compatible Engine Models

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

Package Contents

• 1 × Outboard Rubber Impeller
• 1 × Drive Key / Pin

Installation Guide

1. Disconnect the fuel line and remove the lower unit or water pump housing according to your engine's service manual.
2. Remove the old impeller carefully, noting the direction of the vanes.
3. Clean the impeller housing thoroughly, removing all debris, old gasket material, and corrosion.
4. Lubricate the new impeller and housing with a water-resistant marine grease or glycerin.
5. Insert the drive key/pin into the impeller shaft slot, ensuring it is fully seated.
6. Install the new impeller with vanes oriented in the correct rotation direction (typically clockwise when viewed from above).
7. Gently rotate the impeller by hand to confirm smooth movement and proper seating.
8. Replace all gaskets and O-rings with new components to ensure a watertight seal.
9. Reassemble the water pump housing or lower unit, torquing all fasteners to manufacturer specifications.
10. Reconnect the fuel line and perform a water flow test before launching.

Troubleshooting & FAQ

How do I know if my impeller needs replacing?
Signs of a failing impeller include reduced water flow from the tell-tale (indicator stream), engine overheating, steam from the exhaust, or visible damage to impeller vanes during inspection. Yamaha recommends replacing the impeller annually or every 100 hours of operation, whichever comes first.

How do I confirm this impeller fits my engine?
Check the compatibility table above for your engine model and year. You can also verify the part number using Yamaha's exploded diagrams or compare the physical dimensions and vane count of your old impeller to the product images.

What happens if I install the impeller in the wrong direction?
Installing the impeller backwards will result in little to no water circulation, causing your engine to overheat quickly. Always install vanes in the direction of shaft rotation and refer to your service manual for confirmation.

Should I replace other water pump components at the same time?
Yes, it's highly recommended to replace gaskets, O-rings, and seals whenever you change the impeller. Many technicians also inspect the wear plate and housing for scoring or damage to ensure maximum pump efficiency.

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.