Water Pump Drive Shaft Collar & Spacer Set – Fits Yamaha 115–300 HP Outboards (Replaces 61A-45527-00-00, 61A-45538-00-00)

Water Pump Drive Shaft Collar & Spacer Set – Fits Yamaha 115–300 HP Outboards

This water pump drive shaft collar and spacer set is designed for a wide range of Yamaha 2-stroke and 4-stroke outboard models from 115 HP to 300 HP (1991–present). It is also compatible with select Mercury 225 EFI 4-Stroke models (Serial #0T653945 & Up).

The components in this kit serve as direct replacements for Yamaha OEM part numbers 61A-45527-00-00 (Collar) and 61A-45538-00-00 (Spacer), ensuring precise fit and function within the lower unit's water pump assembly.

• Installation Location: Mounts within the outboard lower unit water pump assembly.
• Durable Materials: The collar is made from stainless steel for corrosion resistance, and the spacer is made from durable plastic.
• Included Components: Includes one drive shaft collar and one drive shaft spacer.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers for this component set.

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.

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.

Technical Specifications

Package Contents

• 1 x Drive Shaft Collar (61A-45527-00-00)
• 1 x Drive Shaft Spacer (61A-45538-00-00)

Installation Guide

1. Safety First: Disconnect the battery and ensure the engine is securely mounted before beginning work.
2. Access the Lower Unit: Drain the gearcase oil. Remove the bolts securing the lower unit to the engine's upper casing.
3. Remove the Water Pump Housing: Carefully detach the lower unit. Locate and unbolt the water pump housing to expose the impeller and drive shaft.
4. Inspect and Remove Old Parts: Slide the old impeller, spacer, and collar off the drive shaft. Clean the area thoroughly, removing any old gasket material or debris.
5. Install New Components: Slide the new drive shaft collar onto the shaft first, followed by the new spacer. Ensure they are seated correctly according to your engine's service manual diagram.
6. Reassemble: Install the new impeller and reassemble the water pump housing with a new gasket. Reattach the lower unit to the engine, refilling the gearcase oil to the proper level.

Troubleshooting & FAQ

Q: How do I confirm this set fits my specific engine?
A: The surest way is to check the Compatible Engine Models table on this page. We also recommend using the brand-specific guides linked above to verify your engine's model and serial number against our compatibility data.

Q: What are the signs my collar and spacer need replacement?
A: These parts are typically replaced during a full water pump service. Wear or damage can cause improper impeller seating, leading to poor cooling performance, water pump noise, or vibrations from the lower unit. Visual inspection during maintenance is key.

Q: What is the difference between the collar and spacer?
A: The collar, made of stainless steel, provides a durable seating surface on the driveshaft. The plastic spacer sits on top of it, correctly positioning the water pump impeller for optimal height and function. Both are critical for the water pump's alignment and operation.

Q: OEM vs. Aftermarket?
A: 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.

Q: How fast do you ship and how much does it cost?
A: 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.

Q: What is your warranty and return policy?
A: 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.