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688-45997 Thrust Washer Propeller Spacer for Yamaha | JLM Marine
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688-45997 Thrust Washer Propeller Spacer for Yamaha Outboards
This thrust washer propeller spacer is designed for Yamaha outboard engines ranging from 50 HP to 300 HP. Engineered to fit a wide range of T-series, C-series, and standard horsepower models, this spacer ensures proper propeller alignment and smooth operation. It features 15 splines for secure fitment and reliable performance.
This aftermarket replacement directly substitutes Yamaha 688-45997, 688-45997-00, and 688-45997-01-00, as well as equivalent parts from Sierra (18-4274) and GLM (22191). Built to OEM specifications, it delivers dependable service across dozens of Yamaha outboard configurations.
- 15-spline design for secure propeller mounting
- Direct fit for Yamaha T-50 through 300 HP models
- Crosses multiple OEM and aftermarket part numbers
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| Yamaha | 688-45997 688-45997-00 688-45997-01 688-45997-01-00 |
| Sierra | 18-4274 |
| GLM | 22191 |
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.
| Brand | Model | Rated HP |
|---|---|---|
| Yamaha | T-50, 60, 60-C/E/P, 70, C-70, 75-C/E/P/S, C-80, C-85, CV-85, 90, 90-B/C | 50–90 HP |
| Yamaha | 115, 115-B/C/F/L/LF/P/S | 115 HP |
| Yamaha | 130, 130-L/S | 130 HP |
| Yamaha | 150, 150-C/D/DX/F/L/LF/LX/LZ/P/PW/PX/S/SX/V/VX/VZ/Z | 150 HP |
| Yamaha | 175, 175-P/S/V/VZ/Z | 175 HP |
| Yamaha | 200, 200-L/LF/LX/LZ/F/P/S/SX/V/VX/VZ/Z | 200 HP |
| Yamaha | 225, 225-F/L/LF/LX/S/SX/V/VX/VZ | 225 HP |
| Yamaha | 250, 250-F/L/LF/LX/LZ/S, 250-SX/VX/VZ/Z | 250 HP |
| Yamaha | 300-LZ/VX/VZ/Z | 300 HP |
Technical Specifications
| Specification | Value |
|---|---|
| Part Type | Thrust Washer / Propeller Spacer |
| Spline Count | 15 Splines |
| OEM Number | 688-45997 |
| Applicable Brand | Yamaha Outboard |
Package Contents
The package contains all the parts shown in the product images:
- 1 × Propeller Spacer (Thrust Washer)
Installation Guide
- Disconnect the battery and ensure the engine is off. Remove the propeller nut and any retaining hardware.
- Slide off the existing propeller, noting the order of washers and spacers. Inspect the propeller shaft for damage or corrosion.
- Remove the old thrust washer or spacer from the shaft. Clean the shaft surface thoroughly to ensure proper seating.
- Slide the new thrust washer onto the propeller shaft, aligning the 15 splines correctly. Ensure it seats flush against the gearcase.
- Reinstall the propeller, ensuring all washers and spacers are in the correct sequence. Hand-tighten the propeller nut initially.
- Torque the propeller nut to the manufacturer's specification (consult your Yamaha service manual). Install the cotter pin or retaining clip securely.
- Reconnect the battery and test the propeller for smooth rotation and proper alignment. Check for any unusual vibration or noise during a test run.
Troubleshooting & FAQ
Q: How do I confirm this thrust washer fits my Yamaha outboard?
A: Check the compatible models table above or verify your original part number against the cross-reference list. If your engine model matches and the spline count is 15, this spacer will fit.
Q: What are the signs that my thrust washer needs replacement?
A: Common symptoms include excessive propeller play, vibration during operation, or visible wear/deformation on the washer. If the propeller feels loose or wobbles, inspect and replace the thrust washer immediately.
Q: Can I reuse the old thrust washer if it looks okay?
A: It's not recommended. Thrust washers compress and wear over time, even if damage isn't visible. Replacing it during propeller service ensures optimal performance and prevents future issues.
Q: How often should I replace the thrust washer?
A: Replace the thrust washer whenever you replace the propeller or if you notice any signs of wear, corrosion, or damage. Regular inspection during routine maintenance is recommended.
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.
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Основанная в 2002 году, компания JLM Marine зарекомендовала себя как специализированный производитель высококачественных морских деталей, базирующийся в Китае. Наша приверженность совершенству в производстве заслужила нам доверие ведущих мировых морских брендов.
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