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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.
We can ship to virtually any address in the world with free shipping available for most regions.
For our typical US and Canadian customers , our shipping timeframes are as follows:
- Amazon FBA: orders will be delivered within 1-5 business days after placing the order (during certain special periods such as major promotions, Christmas, etc., the delivery time of Amazon FBA may be affected).
- US warehouse shipment: orders will be delivered within 5 days after placing the order.
- China warehouse shipment: orders will be delivered about 12 days after placing the order.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.
As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.
We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.
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