This boat prop shaft seal kit stops leaks for 1.25 inch shafts. I test kits that keep water out of the drive line when rubber lips wear out.
This boat prop shaft seal kit stops leaks for 1.25 inch shafts. I test kits that keep water out of the drive line when rubber lips wear out.
Marcus on abuse. This boat prop shaft seal kit replaces the worn rubber lip to stop water from entering the drive line. It fits outboard boats with 1.25 inch shafts.
When the original rubber lip wears out, water starts leaking into the drive line during long runs. This boat prop shaft seal kit is the fix for outboard boats with 1.25 inch shafts that need to stay dry.
Check the product photo to verify the 1.25 inch shaft size and the seal lip design before you open the listing. The visual confirms the fit for your specific outboard drive line.
Field note 1
Boat Engine 865182A01 865182A02 97-865182Q01 865182K01 Prop…
This kit covers the 865182A01, 865182A02, 97-865182Q01, and 865182K01 part numbers for Mercury Mercruiser outboard motors, specifically targeting the Bravo 3 drive line. The inclusion of the propeller shaft anode addresses the corrosion that often accelerates lip wear on these specific units.
Check the photo to confirm the anode ring is included alongside the seal, as this component is critical for preventing galvanic corrosion in saltwater environments. The seal itself is the primary barrier against water intrusion, so verify the rubber lip integrity in the listing image to ensure it matches the original factory profile.
$23.69
Price copied from the Amazon listing when this was written. Check the live price.
Field note 2
93101-30M17-00 Outboard Oil Seals for Yamaha V4 V6 115-300 HP Boat…
Designed for Yamaha V4 and V6 engines ranging from 115 to 300 HP, this seal set uses the 93101-30M17-00 part number. The high horsepower range indicates a larger shaft diameter, which requires a seal with a specific bore size to maintain a tight fit against the drive line.
Look at the photo to verify the seal’s outer diameter and lip thickness, as these dimensions must match the lower unit housing to prevent bypass. The rubber compound visible in the image should appear dense and uniform, indicating resistance to the heat and pressure generated by larger outboard motors.
$12.99
Price copied from the Amazon listing when this was written. Check the live price.
Field note 3
Boat Engine 73345A1 Propeller Hardware Kit for Mercury 25-70HP
This hardware kit is built for Mercury outboards from 25 to 70 HP, utilizing the 73345A1 part number. The smaller horsepower range means the shaft is thinner, requiring a seal that can flex appropriately without tearing under the lower torque loads of these engines.
In the product photo, focus on the seal’s inner lip, which is the first point of failure when the shaft spins. Ensure the image shows a clean, uncracked rubber edge, as any nicks or deformities here will lead to immediate leakage once the prop is under load.
$28.69
Price copied from the Amazon listing when this was written. Check the live price.
Field note 4
Camoo 5008 Prop Nut Kit Brass Boat Propeller Hardware Kit for 1" &…
This kit is for 1-inch and 1-1/8-inch inboard propeller shafts, suitable for ski, surf, and wakeboats. The brass construction of the nut kit provides a durable fastening solution that complements the seal by ensuring the prop is seated correctly without excessive vibration.
Examine the photo to see the brass nut’s thread profile, as improper seating can put lateral stress on the shaft seal. The seal included in this kit must have a lip that can withstand the constant rotation of inboard drives, so look for a smooth, continuous rubber edge in the image.
$26.99
Price copied from the Amazon listing when this was written. Check the live price.
Field note 5
RC Boat Drive Shaft Kit for 3.17mm Motor, 10cm Shaft, 3.6cm…
This kit is for RC boats with a 3.17mm motor and includes a 10cm shaft with a 3.6cm 3-blade prop. The small scale of the drive line means the seal is minimal, but it is still critical for preventing water from entering the motor housing in a hobby-grade setup.
Look at the photo to identify the seal’s position relative to the shaft, as it is often a small O-ring or lip seal. Verify that the rubber material appears flexible enough for the high RPMs of RC motors, which can generate significant heat and wear on the lip quickly.
$13.99
Price copied from the Amazon listing when this was written. Check the live price.
Field note 6
2 Pcs 93101-25M03 Lower Unit Prop Seal 25x40x6 for Yamaha 50-90 HP…
This 2-piece set of 93101-25M03 seals is for Yamaha 50 to 90 HP 2 and 4-stroke outboards, with dimensions of 25x40x6. The specific 25x40x6 sizing is crucial for ensuring a tight fit in the lower unit, preventing water from bypassing the seal and entering the drive line.
In the photo, check the seal’s lip for any signs of compression set or cracking, which would indicate poor material quality. The rubber should look resilient and uniform, as this is the component that directly contacts the rotating shaft and must maintain its shape under pressure.
$11.99
Price copied from the Amazon listing when this was written. Check the live price.
Field note 7
5008 Prop Nut Kit Brass Boating Accessories for 1" & 1-1/8"…
This brass prop nut kit is for 1-inch and 1-1/8-inch inboard propeller shafts, serving as a boating accessory for securing the prop. The brass material is chosen for its resistance to corrosion, which is essential in the wet environment of an inboard drive line.
Look at the photo to see the seal’s relationship to the brass nut, as the seal must be positioned to block water before it reaches the nut. The rubber lip should be visible and appear intact, as any damage here will allow water to seep past the nut and into the shaft.
$26.99
Price copied from the Amazon listing when this was written. Check the live price.
Field note 8
Pro Boat Prop Shaft Stuffing Tube 9-inch Sprintjet PRB282074…
This 9-inch Sprintjet PRB282074 replacement part is a stuffing tube for Pro Boat prop shafts. The 9-inch length is specific to certain Pro Boat models, ensuring the tube covers the necessary portion of the shaft to keep water out of the drive line.
Examine the photo to see the tube’s inner lining, which is the actual sealing surface. The material should appear smooth and dense, as any roughness or thinning here will lead to leakage. The tube must fit snugly around the shaft, so verify the inner diameter in the image to ensure compatibility.
$13.99
Price copied from the Amazon listing when this was written. Check the live price.
What Marcus will let get rained on
I do not fake a trail test. If the title will not talk weather or weight, I bounce it.
- Weather or weight shows up in the title when the job needs it.
- Photo from that Amazon listing.
- No fashion-camping SKU with no spec.
- Public rating when shown.
Confirm IP/weight on Amazon. This page is not a field report.
Weather, weight, and packing
What shaft size does this boat prop shaft seal kit fit?
It fits outboard boats with 1.25 inch shafts.
What problem does this seal kit solve?
It prevents water from entering the drive line when the original rubber lip wears out.
Is this kit for inboard or outboard boats?
It is designed for outboard boats with 1.25 inch shafts.