Choosing a Turning Point propeller is only part of matching a new prop to your boat. Most Turning Point propellers use a separate hub kit that connects the propeller to the engine's propeller shaft. That hub kit must match both the propeller's hub series and the specific engine application.
A kit selected by horsepower alone may not fit. Engines with similar horsepower ratings can have different propeller-shaft splines, gearcase sizes, model-year breaks, and installation restrictions. This guide explains how Turning Point's hub system works and which information you need to identify the correct kit.
What Does a Turning Point Hub Kit Do?
A Turning Point hub kit provides the connection between a compatible Turning Point propeller and the engine's propeller shaft. The propeller and hub kit are selected separately, allowing one compatible propeller design to serve multiple engine applications when paired with the correct hub.
This two-part system makes it important to verify both sides of the combination:
- Propeller compatibility: The hub kit must belong to the hub series required by the propeller.
- Engine fitment: The kit must match the engine manufacturer, model, year, spline count, and gearcase size.
A hub kit that fits the propeller but not the engine will not complete the installation. The same is true of a kit that matches the engine but is not compatible with the selected propeller's hub series.
How to Find the Correct Turning Point Hub Kit
Before ordering, gather the following information from the engine identification plate, owner's manual, existing propeller setup, or manufacturer documentation.
1. Engine Manufacturer
Start with the engine or drive manufacturer, such as Mercury or Mariner, Evinrude or Johnson, Yamaha, Suzuki, Honda, Nissan or Tohatsu, Force, Volvo Penta, or OMC. A Turning Point hub kit number can cover applications from more than one manufacturer, but that does not make it universal.
2. Exact Engine Model and Horsepower
Horsepower helps narrow the application, but the complete model matters. High-thrust, commercial, E-TEC, BigFoot, Pro XS, and other model variations may use different gearcases or carry specific restrictions. Match the wording in the application chart as closely as possible.
3. Engine Year
Manufacturers sometimes change propeller shafts or gearcases within the same engine family. A kit may fit an engine before or after a certain model year without fitting every version. If the application chart lists a year range, treat it as part of the fitment—not as optional information.
4. Propeller-Shaft Spline Count
The splines are the ridges on the propeller shaft that engage the hub. Common Turning Point applications include several different spline counts. Do not assume two engines use the same shaft because their horsepower or gearcase diameter is similar.
If the existing propeller has been removed and the shaft can be inspected safely, count the splines carefully. Some applications also have shaft or retaining-hardware details noted in the chart.
5. Gearcase Size
Gearcase size is another essential part of the match. Turning Point applications span small 2.5-inch and 3-inch gearcases through larger 3.5-inch, 4.25-inch, and 4.75-inch gearcases. Two engines with the same spline count may still require different propellers or hubs because their gearcase sizes differ.
Turning Point Hub Kit Application Chart
| Manufacturer | Engine Model | Stroke | Years | Spline | Hub Kit | Gearcase | Prop Series |
|---|---|---|---|---|---|---|---|
| Johnson/Evinrude | 9.9HP, 15HP | 2 | 1974-1995 | 13 | 202 | 2.5 | Star One |
| 8HP | 4 | 1996 & Newer | |||||
| 9.9HP | 1995 - 2001 | ||||||
| 15HP | 1995 & Newer | ||||||
| 9.9HP, 15HP | 4 | 2002 & Newer | 10 | 206 | |||
| Honda | 8HP | 2001 & Newer | 8 | 205 | |||
| 9.9HP,15HP,20HP (Not 8 Classic, Pin drive) | |||||||
| Mercury & Mariner | 6HP, 8HP, 9.9HP, 15HP/Sea Pro/Marathon 10HP, 15HP | 2 | 8 (lock nut) | 201 | |||
| 8HP, 9.9HP | 4 | 1995-2004 | |||||
| 15Hp | 1989-2006 | ||||||
| Bigfoot 8Hp, 9.9Hp | 4 | 2005 & Newer | 14(Nissan, Cotter pin) | 207 | |||
| 15HP, 20HP | 2007 & Newer | ||||||
| Nissan & Tohatsu | 9.9HP | 2 | 1984-2005 | 14 | 207 | ||
| 12HP | 1985-1988 | ||||||
| 15 & 18HP | 1985-2005 | ||||||
| 9.9HP, 15HP, 18HP, 20HP | 4 | ||||||
| Parsun | 9.9HP, 15Hp | 8 | 205 | ||||
| Suzuki | 9.9HP | 2 (DT) | 1983-1987 | 10(Type M) | 206 | ||
| 15HP, 15C | |||||||
| 8A, 9.9A, 9.9, 15 | 4(DF) | 2012 & Newer | |||||
| 15A, 20A | |||||||
| Yamaha | 9.9, 15 | 2 | 8 | 205 | |||
| 9.9, 15, 15C, 20HP | 4 | ||||||
| Nissan & Tohatsu | 8HP, 9.8HP | 2 & 4 | 12 | 208 | 2.5" | Star Two | |
| Mercury & Mariner | 8HP, 9.9HP | 4 | 2005 & Newer | 12(cotter pin) | |||
| Johnson/Evinrude | 20, 25 | 2 | 1984 & Newer | 14 | 22 | 3" | Triangle 1 |
| 25 Commercial | 1993-2005 | ||||||
| 30 | 1984 & Newer | ||||||
| 25HP, 30HP | 2(E-Tec) | 1976-2005 | |||||
| 15HP | 2(H.O) | ||||||
| Force | 25HP, 30HP | 1995-1998 | 10 | 21 | |||
| Mercury & Marine | 18HP | 2 | 1980-1985 | 10 | 21 | ||
| 20HP | 1986 & Newer | ||||||
| 25HP | 1985 & Newer | ||||||
| 9.9HP, 15HP (Bigfoot) | 4 | ||||||
| Honda | BF25, BF30 | 10 | 28 | 3" | Triangle 2 | ||
| Mercury & | 25HP, 30HP | 4 | 2006 & Newer(cotter pin shaft) | 28 | |||
| Parsun | 20HP, 25Hp | 25 | |||||
| Nissan & Tohatsu | 25HP, 30HP | 2 & 4 | 28 | ||||
| Yamaha | 20HP, 25HP, 30HP | 2 | 25 | ||||
| 25HP | 4 | ||||||
| Johnson/Evinrude | 25HP, 30HP | 4 | 10 | 26 | 3" | Triangle 3 | |
| Suzuki | 20, 25, 25C, 30, 30C | 2 (DT) | 1987 & Newer | 26 | |||
| 25HP, 30HP | 4 (DF) | ||||||
| Johnson/Evinrude | 40HP, 50HP | 4 | 13 | 11 | 3.5" | Circle 1 | |
| Force | 40HP, 50HP | 1995-1998 | 11 | ||||
| 70HP | 1991-1995 | ||||||
| 75HP | 1996-1998 | ||||||
| Honda | 35, 40, 45, 50, 60 (not P60) | 4(Bigfoot) | 12 | ||||
| Mercury & Mariner | 30HP | 2 | 1994 & Newer | 11 | |||
| 35, 45, 55 | |||||||
| 49, 50, 70 | 1977 & Newer | ||||||
| 70HP | 1983 & Newer | ||||||
| 25HP(Bigfoot) | 4 | ||||||
| 30HP | 1994-2005 | ||||||
| 40HP - 60HP | |||||||
| Nissan & Tohatsu | 40C, 40D, 50D, 50C, 60A, 70A2, 60B, 70B | 13 | |||||
| Parsun | T30, T35, T36, T40 | 12 | |||||
| Suzuki | 35C, 40, 50, 50M, 55, 60, 65HP | 2(DT) | 1989 & Newer | 11 | |||
| 40HP, 50HP | 4(DF) | ||||||
| 40A, 50A, 60A | 2010 & Newer | ||||||
| Yamaha | 40HP - 55HP | 2 | 12 | ||||
| FT25HP (High thrust), 30HP-60HP | 4 | ||||||
| Johnson/Evinrude | 40HP, 48HP | 2 | 13 | 12 | 3.5" | Circle 2 | |
| 50HP | 1975-2005 | ||||||
| 55HP | 1976-1979 | ||||||
| 60HP, 65HP | 1980-1985 | ||||||
| 75HP | 3(with small geracase) | 1975-1985 | |||||
| 50HP | 2 | 1971-1974 | 13 | 503 | 4.25 | Diamond | |
| 45 - 55Hp Commercial | |||||||
| 55, 60, 65, 70HP(with large gearcase, 65Hp(Commercial) | 3 | ||||||
| 75, 85, 88, 90, 100, 115, 120 | 4 | 1986-1994 | |||||
| 125, 135 | 1973-1976 | ||||||
| 140 | 1977-1984 & 1986-1994) | ||||||
| 115HP(H.O) | |||||||
| 40, 50, 60,75HP (E-Tec) | |||||||
| 90, 115HP, 130HP(20" shaft) | 2009-2010 | ||||||
| 60HP, 70HP | 4 | 13 | 506 | ||||
| Force | 75Hp | 1999 | 15 | 501 | |||
| 90HP-150HP | 1995 & Newer | ||||||
| Honda | 75Hp, 90HP | 1995-1998 | 15 | 501 | |||
| P60 | 15 | 507 | |||||
| 75HP, 90HP | 1999 & Newer | ||||||
| 115Hp, 130HP, (not 115D) | |||||||
| Mercury & Mariner | 40 - 60 Bigfoot | 2 & 4 | 15 | 501 | |||
| 70 | 1987-1989 | ||||||
| 75, 80 | 1978-1989 | ||||||
| 90, 100, 115, 125, 140HP | |||||||
| 150 XR4/6( includes equivalent Mariner Magnum 1,2,3) | Thru 1993 | ||||||
| OptiMax: 75, 90, 115, 125HP | |||||||
| Nissan & Tohatsu | 60C, 70C | 15 | 505 | ||||
| 90-140HP | |||||||
| OMC | Cobra 400: 2.3L-3.0L | 1978-1989 | 13 | 503 | |||
| Sea Drive: 1.6L-1.8L | |||||||
| Pasrsun | T60, T75, T85, T90 | 15 | 500 | ||||
| Suzuki | 75-140HP | 2(DT) | 1989 & Newer | 13 | 506 | ||
| 60HP, 70HP | 4(DF) | 1998-2009 | |||||
| Yamaha | High Thrust: T50, FT60 | 15 | 500 | ||||
| 60-100HP | 2 | ||||||
| 70-100HP | 4 | ||||||
| 115HP, 130HP | 2 | 15 | 505 | ||||
| 115HP | 4 | ||||||
| Suzuki / Johnson | 70A, 80A, 90A, 70HP, 80Hp, 100HP, 115HP | 4 | 2009 & Newer | 15 | 509 | 4.25" | Diamond 1 |
| 90HP, 100Hp, 115Hp | 2001 & Newer | ||||||
| 115A, 140HP | 4(DF) | 501 | |||||
| Johnson/Evinrude | 100HP Commercial | V4 & V6 large gearcase | 15 | 502 | 4.25" | Rectangle | |
| 120Hp | 1985 | ||||||
| 130HP | 1995-1996 | ||||||
| 140HP | 1985 | ||||||
| 115HP, 130HP | Pleasure | 1995 & Newer | |||||
| 150, 200, 225, 250HP | H.O | ||||||
| 135HO-250HP | V6 | ||||||
| 250HP-300HP | V8 | ||||||
| 90HP, 115HP, 130HP | E-TEC(not E-TEC G2 | 2009-2010 | 25 | ||||
| 135HP-300HP | E-TEC(not E-TEC G2 | ||||||
| Honda | BF115D, BF135, BF150, BF200 | 2002-2012 | 15 | 507 | |||
| BF225 | 2002-2012 | ||||||
| BF200A | 2013 & Newer | 508 | |||||
| BF225A | 2013 & Newer | ||||||
| BF250A | 2012 7 Newer | ||||||
| Mercury & Mariner | V6: 135-300HP | Does not fit Pro XS | 501 | ||||
| Verado: 135-275HP | |||||||
| OptiMax: 150, 200, 250HP | |||||||
| MerCruiser | Alpha One and Bravo One | 1983 & Newer | 501 | ||||
| OMC | Cobra 800: 3.0L - 7.5L | 502 | |||||
| King Cobra: 454, 502 | |||||||
| Sea Drive: 2.0-4.0L | |||||||
| Tohatsu | BFT115, BFT150, BFT200, BFT225, BFT250 | 508 | |||||
| Volvo Penta SX & OMC SX Cobra | 3.0L - 8.2L | Not available for Volvo DuoPro or Aquamatic drives | 1994 & Newer | 504 | |||
| Yamaha | 150 - 250HP | 2 & 4 | 504 | ||||
| Stern drives 3.0 - 7.4L | |||||||
| Johnson | 200HP, 225HP | 4 | 15 | 507 | 4.25" | rectangle | |
| Suzuki | 150HP-300HP | 4 (DF) | 507 |
Understanding Turning Point Hub Series
Turning Point organizes propeller compatibility with hub-series names or symbols. Depending on the propeller size and application group, you may see identifiers such as Star, Triangle, Circle, Diamond, or Square. These identifiers help connect a particular propeller family and size range to the appropriate engine-application chart.
The hub series is not a substitute for the hub-kit number. First identify the series required by the propeller, then use that series' application chart to find the kit listed for the engine. A Square-series propeller, for example, still requires the specific Square-series hub kit that matches the engine and drive.
When viewing a Turning Point propeller at Wholesale Marine, use the application chart in the product description to verify the required hub kit. Unless the listing specifically says otherwise, the hub kit is sold separately.
Turning Point 500 Series Hub Kits
Turning Point's 500 Series serves applicable 4.25-inch and 4.75-inch gearcase applications. Depending on the engine, the correct kit may be TUR-500 through TUR-509. Select the exact kit from the application chart rather than assuming all 500 Series kits fit the same propeller shaft.
Applicable 500 Series systems for 4.25-inch and 4.75-inch gearcases can be interchangeable with Mercury Flo-Torq II, Michigan Wheel XHS, and Solas Rubex hub systems. This interchangeability statement does not apply broadly to Turning Point's smaller 2.5-inch, 3-inch, or 3.5-inch gearcase systems.
Interchangeability also does not mean that every hub kit fits every engine. The replacement hub must still match the engine's complete application, including the manufacturer, model, year, spline count, and gearcase size.
Common Hub-Kit Selection Mistakes
- Shopping by horsepower alone: Engines with the same horsepower can use different shafts, gearcases, or kit numbers.
- Ignoring model-year breaks: A hub kit may fit only earlier or later versions of an engine family.
- Matching only the spline count: Spline count is important, but it must agree with the gearcase size and complete engine application.
- Confusing hub series with hub-kit number: The symbol identifies the propeller's compatibility group; the numbered kit identifies the engine connection.
- Assuming the hub is included: Many Turning Point propellers require a separately purchased hub kit.
- Overlooking application notes: Restrictions for high-thrust, commercial, DuoProp, Aquamatic, Pro XS, and other specialized applications can change the answer.
- Applying 500 Series interchangeability to smaller gearcases: The Flo-Torq II, XHS, and Rubex interchangeability rule is limited to applicable 500 Series systems for 4.25-inch and 4.75-inch gearcases.
Choosing the Propeller Before the Hub Kit
If you have not selected a propeller yet, begin with the boat's engine and current performance. Diameter, pitch, and blade count affect acceleration, operating RPM, grip, and top-end performance. Our guide to boat propeller pitch, diameter, and blade count explains how those measurements work together.
Material is another separate decision. Aluminum and stainless steel propellers differ in cost, blade stiffness, impact behavior, and potential performance. Review our aluminum vs. stainless steel propeller guide before comparing Turning Point Hustler and Express options.
Once the propeller is selected, use its Turning Point hub-series chart to choose the engine-specific kit. You can shop boat propellers and use the Prop Selection Guide to narrow the available options, or browse Turning Point propellers and hub kits available from Wholesale Marine.
Before Installing a Turning Point Propeller and Hub Kit
Confirm the propeller part number and hub-kit number before installation. Compare the supplied components with the application and retain any required engine-specific hardware identified for the setup. The engine should be off and secured against accidental starting whenever the propeller is handled.
Turning Point does not provide kit-specific installation instructions for these applications. Follow the engine or drive manufacturer's propeller installation procedure for hardware order, lubrication, torque, and retention requirements. If the application is uncertain, verify it before installing the propeller; installation marks can make a return or exchange more difficult.
Frequently Asked Questions
How do I know which Turning Point hub kit I need?
Identify the hub series required by the propeller, then match the engine manufacturer, exact model, year, spline count, and gearcase size in that series' application chart. Do not select a kit using horsepower alone.
Does a Turning Point propeller include the hub kit?
Many Turning Point propellers use a separately sold hub kit. Check the individual propeller listing for its required hub series and whether a hub kit is included before ordering.
What is the difference between a hub series and a hub-kit number?
The hub series identifies the propeller's compatibility group, while the hub-kit number identifies the components needed to connect that propeller to a particular engine application. Both must match.
Can I choose a Turning Point hub kit by engine horsepower?
No. Horsepower is only one part of fitment. Engines with the same rating may have different model years, spline counts, gearcase sizes, or application restrictions.
Are Turning Point hubs interchangeable with Flo-Torq II, XHS, or Rubex hubs?
Applicable Turning Point 500 Series systems for 4.25-inch and 4.75-inch gearcases can be interchangeable with Mercury Flo-Torq II, Michigan Wheel XHS, and Solas Rubex systems. Do not apply that claim to Turning Point's smaller-gearcase hub systems.
Can the same Turning Point propeller fit engines from different manufacturers?
A compatible Turning Point propeller may be used across multiple engine applications when paired with the correct hub kit. The kit must still match the individual engine's manufacturer, model, year, spline count, and gearcase size.
Get Help Matching Your Turning Point Hub Kit
If you are unsure which propeller or hub kit matches your engine, contact the Wholesale Marine parts experts at 1-877-388-2628. Have the engine manufacturer, model, horsepower, year, and current propeller information available so the application can be checked before ordering.