Inboard Boat Propeller Hardware Kit

Rated 4.9 out of 5
Based on 14 reviews
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Inboard Boat Propeller Hardware Kit
Inboard Boat Propeller Hardware Kit 1-1/4" Shaft
Inboard Boat Propeller Hardware Kit 1" Shaft
Carat Down
Sale price
From $15.99
Regular price

Item: M10422

The Acme propeller replacement kit includes all of the disposable components required when replacing the propeller on your boat.

The components used to secure a propeller to the prop shaft are realistically only designed to be used two times, after which they should be replaced. The max torque when tightening this nut on the shaft should be 35 ft/lbs.

This kit includes everything you'll need when changing the Acme propeller on your boat:

  • Nylock Lock Nut
  • Key
  • Cotter Pin

Aren't sure what size you need? The shaft size you select for the prop hardware kit needs to be the same as the propeller you have on your boat or are purchasing. If you are unsure about your prop shaft size, use our prop finder tool to look up our suggested props for your year, make, and model boat.

*Those ordering the spline version for 2003 and newer MasterCraft boats will not need to use the key that is included in the prop hardware kit.

Note: This hardware kit will not work with older style shafts that make use of a castle nut and cotter pin arrangement. These are typically found on boats from the late 70's to early 80's.

30 Days
ACME - view brand page
Item #
average rating 4.9 out of 5
Based on 14 reviews
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100% of reviewers would recommend this product to a friend
14 Reviews
Reviewed by John B.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Low cost, worth having just in case

I bought this with the puller for the spare prop I hope I never need, should last forever.

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Reviewed by Kevin H.
I recommend this product
Rated 4 out of 5
Review posted

cheap insurance

Works as expected, I didn't end up using the new Keyway that came with the package was considerably shorter than the stock one that came with my 14' SUPRA SC 350.

NOTE: Thank you for the feedback regarding the size of the key in our replacement kit. Based on other feedback we have switched to a longer key with this kit which should be a direct replacement for the key that came on your boat.

- WakeMAKERS Team

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Reviewed by Nicholas H.
I recommend this product
Rated 5 out of 5
Review posted

Does the Job

This will get the job done and is good to have as a backup.

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Reviewed by Ray C.
I recommend this product
Rated 5 out of 5
Review posted

Easy to use - A must with changing a Prop more than 3-times

New Prop install

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Reviewed by William k.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Great to have

I ordered this with a new Acme prop. Great to have these around as a backup. 15$ worth of parts could save you 450$ + if you dont replace the hardware and you lose your prop.

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This product can expose you to chemicals including DINP (Diisononyl phthalate) and DIDP (Diisodecyl phthalate) which are known to the State of California to cause cancer. For more information go to

Best Price Promise

We want you to receive the best possible deal on your boating products. We match any authorized dealer's advertised price for the same in-stock item. What does that mean for you? If you find the same product in stock at another authorized retailer we'll gladly match their price delivered price. Don't forget that on top of our free fast shipping (on any order over $99 shipped to the Continental US) we also offer our exclusive lifetime technical support.

  • WakeMAKERS Best Price Promise is only valid on products sold by factory authorized internet dealers.
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If you have any questions about our price match policy, or if you would like us to match a price for you, simply contact us.

Note We have the right to refuse price matching at any time for any reason. In order to qualify for price matching, the item must be identical make, model, year, and part number, and must be in stock. Price matching excludes sale items and previously purchased products.

365 Day Returns

365 Day Returns Your satisfaction is our biggest priority, which is why we gladly accept returns on any new product for up to 365 days from the date your order ships. Refunds will be issued to the original payment method. Returns on orders older than 30 days can be processed but will be completed for store credit in total of the returned item and not a return on the original payment method. Returns on orders older than 365 days cannot be processed and are unable to be accepted.

Option 1: To initiate a return, log in to your account and click on the "My Orders" tab on the left side of the page, navigate to the order or product you'd like to return and follow the instructions to return the item/s.

Option 2: Contact us via phone or email at and we will provide you with a Return Merchandise Authorization number (RMA). Fill out the back of the packing slip that was included with your order, noting the RMA number where specified and include the packing slip with your shipment back to us. Returns without an RMA number and packing slip cannot be processed and will not be accepted. If you need a duplicate copy of the packing slip, contact us.

Returns will be processed within 3 business days after receiving them. Please note that it can take up to 10 business days (2 weeks) for the refunds to be posted to your original payment method.

*Returns for propellers, propeller pullers, custom ballast bags, blemished ballast bags, lengths of hose, lengths of wire, eFoil Batteries and any other custom modified product are not accepted. All sales on these products are final.

Expert Advice

Our product experts bring over 40+ years of real-world experience and knowledge of the boating industry. They really know the gear, because they spend their free time out on the water with friends and family testing the products out.

Product Expert Phone Hours 9am - 5pm (PST) Monday - Friday

Product Expert Email We respond to most emails within 24-48 hours.

Looking for specific installation guides or instructional videos? Check out our Resource Section for detailed information.

WakeMAKERS Online Shopping Tools Our Finder tools are designed to help you pick the perfect product. We've simplified the complex process of finding the right ballast or prop for you boating style and made it easy by doing the research for you.

Our goal is simple; provide the best product, at the best price, with the best customer support.

Free Shipping On Orders Over $99

The last thing you want to do is pay to have your order shipped when shopping online, which is why we include free shipping on all orders over $99*.

*Free shipping offer applies to orders over $99 shipped within the Continental United States and cannot be combined with other discounts or promotions (including coupon codes).