Direct answer: Choose a thrust washer kit that matches your engine’s horsepower, spline count, and gearcase size to ensure proper fit and reliable operation. This guide covers top options for Yamaha, Mercury/Quicksilver, Tohatsu/Nissan, and Bravo 3 setups. The best picks are suited for boaters who want a dependable install kit that includes the washer, spacer, nut, and cotter pin. Each product is evaluated for best use cases, limitations, and why it stands out.
| Product | Engine Type | Includes | Why Buy |
|---|---|---|---|
| Qiclear Upgrade 150-300hp | Yamaha Outboard 150-300hp | Thrust Washer, Spacer, Washer, Nut, Cotter Pin | OEM-style fit for high-hp Yamahas; solid all-in-one kit |
| VIF Jason Marine 60-85hp | Yamaha 60-85hp | Thrust Washer, Spacer, Washer, Nut, Cotter Pin | Good mid-range option with clear engine pairing |
| Bonbo Outboard Upgrade Kit | Yamaha 150-300hp | Thrust Washer, Spacer, Washer, Nut, Cotter Pin | Budget-friendly direct replacement, similar OEM part |
| SouthMarine 73345/92647M Combo | Mercury/Quicksilver 25-70hp | Thrust Washer, Tab Washer, Propeller Nut, 13-Tooth Spline | Strong Mercury/Quicksilver compatibility; robust set |
| SouthMarine Bravo 3 Kit | Mercury/Quicksilver Bravo 3 | Thrust Washer, Propeller Nut, Prop Shaft hardware | Specialized for Bravo 3 prop shafts; clear compatibility notes |
Qiclear Upgrade 150-300hp Propeller Installation Hardware Kit
The Qiclear kit targets Yamaha outboards in the 150-300hp range and 15-spline props. It includes a thrust washer, spacer, washer, nut, and cotter pin, aligning with OEM parts like 6E5-45987-01. Best for boaters with high-hp Yamahas who want an OEM-style setup and straightforward replacement. A potential limitation is the need to verify exact engine type before purchasing to avoid mismatches.
VIF Jason Marine Prop Installation Kit for 60-85hp Yamaha
Designed for Yamaha 60-85hp models, this kit contains thrust washer, spacer, washer, nut, and cotter pin. It emphasizes a strict quality-control process to match original styling and prop fit. Best for mid-range Yamaha applications where a reliable, aftermarket replacement is needed. Choose this if you have a 60-85hp Yamaha and want a balance of cost and compatibility. Limitation: Only listed for 60-85hp; ensure your exact spline count matches 15-spline props.
Bonbo Outboard Upgrade Prop Hardware Kit for Yamaha 150-300HP
Bonbo’s kit is aimed at Yamaha 150-300hp Prop installation. It offers a direct OEM-style replacement, including thrust washer, spacer, washer, nut, and cotter pin. Best for boaters who want a cost-effective backup kit that matches OEM parts in function. Caution: confirm model details to ensure compatibility with your specific Yamaha prop and 15-spline configuration.
SouthMarine 73345/92647M Thrust Washer Set for Mercury/Mercury Bravo
SouthMarine’s kit targets Mercury/Quicksilver engines in the 25-70hp range, including a thrust washer, a tab washer, and a propeller nut with a 13-tooth spline. Best for Mercury-based installations requiring a ready-to-use set with all essential components. Better for older Bravo 3 configurations. Limitation: Verify the exact engine part numbers (73345, 92647M, 18-4233, etc.) to ensure exact fit.
SouthMarine Bravo 3 Thrust Washer & Nut Kit
This kit is designed for Bravo 3 prop shafts and includes essential components such as thrust washer, thrust hub, and propeller nut. Best for Quicksilver/Bravo 3 installations that require a complete set with compatible spline sizing. Caution: Bravo 3 users should verify that the included parts match their exact model year and gearcase configuration.
Buying Guide: Key Considerations for Thrust Washer Kits
- Engine compatibility: Confirm horsepower range, spline count (commonly 13, 15, or other), and gearcase size to avoid misfit.
- OEM vs aftermarket: OEM-style kits provide closer fit to original hardware; aftermarket kits often offer cost savings but verify part numbers.
- Included components: Ensure the kit contains thrust washer, spacer, washer, nut, and cotter pin, and that any extra items (tab washer, propeller nut) meet your needs.
- Propulsion system brand: Match kits to Yamaha, Mercury, Quicksilver, Tohatsu/Nissan, etc., since spline and gearcase standards differ between brands.
- Installation considerations: Some kits are specialized for Bravo 3 or specific Yamaha ranges; pick a kit that simplifies installation for your setup.
- Quality and durability: Look for kits advertised as OEM-style or with strict quality control to minimize wear and ensure reliable clamping force.
- Return and model verification: Many listings urge customers to verify engine type before purchase; use model numbers and exact engine specs to guide selection.
Frequently Asked Questions
- What is a thrust washer kit used for on an outboard propeller?
It provides the necessary spacer and fasteners to correctly mount the propeller onto the shaft, ensuring proper alignment and clamping force.
- How do I know which kit fits my engine?
Check your engine horsepower, the propeller spline count, and the gearcase size. Match these details to the kit’s listed compatibility.
- Are OEM and aftermarket kits interchangeable?
Not always. OEM-style kits resemble factory components and may fit more precisely, while aftermarket kits can save money but require careful verification of part numbers.
- Should I replace the propeller nut and cotter pin with each installation?
Yes, many kits include a new nut and cotter pin to ensure secure mounting and prevent loosening during operation.
- What signs indicate I need a new thrust washer kit?
Loose propeller fit, unusual vibration, or play between the prop and shaft can indicate worn washers or mounting hardware requiring replacement.