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UNDERWATER GEAR

Underwater Hull Boat Parts

If you need underwater gear, My Inboard Marine is the right place for you. We carry drive shafts, nuts, wrenches, shaft systems, seals, struts, rudders, steering systems and parts plus so much more! All designed to withstand the harsh effects of long exposure to water. Whatever tools or parts you need for your boat, you can find it right here at My Inboard Marine.

If you have any questions pertaining to our products, feel free to contact us today at 803-766-8586 or email us at sales@myinboardmarine.com and we will respond to help. Purchase your underwater hull boat parts from us today!

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Nylock Prop Nut Kit Brass For 1" Or 1-1/8" Shafts With Key And Cotter Pin ACME 5008
Nylock Prop Nut Brass For 1" Or 1-1/8" Or 1-1/4" Shafts With Key And Cotter Pin ACME 5008
31%
$27.00 $38.99
Nylock Prop Nut Kit Brass For 1" Or 1-1/8" Shafts With Key And Cotter Pin ACME 5008
$27.00 $38.99
Fits 1" - 1-1/8" Shafts ACME 5008 ACME Prop Nut Kits include one nylon lock nut, cotter pin, and key.
Nylock Prop Nut Kit Brass For 1-1/4 Shafts With Key And Cotter Pin OJ-3123B
Nylock Prop Nut Kit Brass For 1-1/4 Shafts With Key And Cotter Pin OJ-3123B
21%
$23.00 $28.99
Nylock Prop Nut Kit Brass For 1-1/4 Shafts With Key And Cotter Pin OJ-3123B
$23.00 $28.99
OJ Prop Nut Kit 3123B by Johnson Propeller Fits 1-1/4" Shafts Everything you need by Johnson Propeller Kit includes a 3/4″ brass Nylock prop nut,...
Output Shaft Nut Velvet Drive 71C and 72C Direct Drive 1 to 1 Ratio Transmissions R017002 VD-4775L
Nut For Velvet Drive 71C and 72C Direct Drive 1 to 1 Ratio Transmissions R017002 VD-4775L
38%
$22.33 $36.02
Output Shaft Nut Velvet Drive 71C and 72C Direct Drive 1 to 1 Ratio Transmissions R017002 VD-4775L
$22.33 $36.02
Output Shaft Nut OEM by Velvet Drive Brand Output Shaft Nut - 4" Outside Diameter Couplers For Velvet Drive 71C and 72C direct drive transmissions...
Output Shaft Nut Velvet Drive OEM ALTO-023320
Output Shaft Nut Velvet Drive OEM ALTO-023320 Output Shaft Nut Velvet Drive OEM ALTO-023320
10%
$24.05 $26.76
Output Shaft Nut Velvet Drive OEM ALTO-023320
$24.05 $26.76
Output Shaft Nut OEM Velvet Drive transmission out flange/coupling nylock retaining nut Nut includes built in flange washer One time use requires replacement after installation...
Packing Extractor Western Pacific® OEM WPT-10160 # 1 New Item By Request!
Packing Extractor Western Pacific® OEM WPT-10160 # 1Packing Extractor Western Pacific® OEM WPT-10160 # 1 New Item By Request! Packing Extractor Western Pacific® OEM WPT-10160 # 1 New Item By Request!
22%
$10.33 $13.29
Packing Extractor Western Pacific® OEM WPT-10160 # 1 New Item By Request!
$10.33 $13.29
Western Pacific Trading 10160 Packing Extractor Tool #1 Extractor PERFECT for removing your old rope packing. #1 Packing Extractor Tool #1 has 7 3/4 inch...
Packing Nut Wrench 1-7/8" For Hard To Reach 1-7/8" Stuffing Box WRENCH178
Packing Nut Wrench 1-7/8" For Hard To Reach 1-7/8" Stuffing Box WRENCH178 Packing Nut Wrench 1-7/8" For Hard To Reach 1-7/8" Stuffing Box
17%
$29.95 $35.95
Packing Nut Wrench 1-7/8" For Hard To Reach 1-7/8" Stuffing Box WRENCH178
$29.95 $35.95
Shaft Packing Wrench for Inboards, made out of 3/8" thick Billet Aluminum. 1-7/8" This is a Stub Wrench for the hard to reach 1.875" Stuffing Box...
Packing Nut Wrench 2" For Hard To Reach 2" Stuffing Box WRENCH2
Packing Nut Wrench 2" For 2 Inch For Hard To Reach 2" Stuffing Box
14%
$31.95 $36.95
Packing Nut Wrench 2" For Hard To Reach 2" Stuffing Box WRENCH2
$31.95 $36.95
Shaft Packing Wrench for Inboards, made out of 3/8" thick Billet Aluminum. This is a Stub Wrench for the hard to reach 2" Stuffing Box...
Prop Nut And T-Handle Drain Buddy - The New "All Inclusive Prop Nut Wrench" by York
Prop Nut And T-Handle Drain Buddy - The New "All Inclusive Prop Nut Wrench" by York Prop Nut And T-Handle Drain Buddy - The New "All Inclusive Prop Nut Wrench" by York
14%
$59.95 $69.99
Prop Nut And T-Handle Drain Buddy - The New "All Inclusive Prop Nut Wrench" by York
$59.95 $69.99
Prop NuT-Handle Drain Buddy By: York Design and Fabrication What this wrench has to offer: - Install/Remove 7/8"-9 Prop Nut (1-1/4" Shaft) - Install/Remove 3/4"-10...
Prop Nut Brass Castle Nut For 1" or 1-1/8" Inboard Shafts Slotted Castle Nut
Prop Nut Brass Castle Nut For 1" or 1-1/8" Shafts Slotted Castle Nut
13%
$19.00 $21.95
Prop Nut Brass Castle Nut For 1" or 1-1/8" Inboard Shafts Slotted Castle Nut
$19.00 $21.95
Inboard Castle Nut - Fits 1" or 1-1/8" shafts. 3/4-10 thread Fits 1" or 1-1/8" shafts. This castle nut can be replaced with a Nylock...
Prop Nut Brass Castle Nut For 1-1/4" Inboard Shafts Slotted Castle Nut
Prop Nut Brass Castle Nut For 1-1/4" Shafts Slotted Castle Nut Prop Nut Brass Castle Nut For 1-1/4" Shafts Slotted Castle Nut
9%
$22.37 $24.69
Prop Nut Brass Castle Nut For 1-1/4" Inboard Shafts Slotted Castle Nut
$22.37 $24.69
Inboard Castle Nut - Fits 1-1/4" shafts. 7/8-9 thread
Prop Wrench A.R.E. 1-1/16 Inch x 3/4 Inch Fits All But NOT Correct Craft
Prop Wrench A.R.E. 1-1/16 Inch x 3/4 Inch Fits All But NOT Correct Craft
15%
$34.00 $39.95
Prop Wrench A.R.E. 1-1/16 Inch x 3/4 Inch Fits All But NOT Correct Craft
$34.00 $39.95
A.R.E.’s chrome nickel-plated prop wrench is laser cut from 1/4" steel and is offset for clearance. This wrench will NOT FIT Correct Craft. For Correct...
Prop Wrench A.R.E. 1-1/4" X 3/4" For All Correct Craft
Prop Wrench A.R.E. 1-1/4" X 3/4" For All Correct Craft
12%
$35.00 $39.89
Prop Wrench A.R.E. 1-1/4" X 3/4" For All Correct Craft
$35.00 $39.89
This wrench WILL FIT Correct Craft. Fits the "Castle Nut" and the 3/4" end fits the A.R.E. Ironman Prop Puller. For ALL OTHERS use Item ARE106 Helps remove the...
PSS Shaft Seal Installation Kit 1" T-Fitting Water Supply Kit
PSS Shaft Seal Kit 1" T-Fitting Water Supply Kit PSS Shaft Seal Kit 1" T-Fitting Water Supply Kit
23%
$50.00 $65.00
PSS Shaft Seal Installation Kit 1" T-Fitting Water Supply Kit
$50.00 $65.00
1" T-Fitting Quick install water supply KIT ONLY for the PSS Shaft Seals This kit COMES WITH the PSS Shaft Seal Kit if you purchase a PSS...
PSS Shaft Seal Installation Kit 1-1/4" T-Fitting Water Supply Kit
PSS Shaft Seal Kit 1-1/8" T-Fitting Water Supply Kit PSS Shaft Seal Kit 1-1/8" T-Fitting Water Supply Kit
13%
$65.00 $75.00
PSS Shaft Seal Installation Kit 1-1/4" T-Fitting Water Supply Kit
$65.00 $75.00
1+1/8" T-Fitting Quick install water supply KIT ONLY for the PSS Shaft Seals This kit COMES WITH the PSS Shaft Seal Kit if you purchase a PSS...
PSS Shaft Seal Installation Kit 1-1/8" T-Fitting Water Supply Kit
PSS Shaft Seal Kit 1-1/8" T-Fitting Water Supply Kit PSS Shaft Seal Kit 1-1/8" T-Fitting Water Supply Kit
23%
$50.00 $65.00
PSS Shaft Seal Installation Kit 1-1/8" T-Fitting Water Supply Kit
$50.00 $65.00
1+1/8" T-Fitting Quick install water supply KIT ONLY for the PSS Shaft Seals This kit COMES WITH the PSS Shaft Seal Kit if you purchase a PSS...
PSS Shaft Seal Kit 1" Diameter Drive Shafts Comes With Install Kit
PSS Shaft Seal Kit 1" Diameter Drive Shafts Comes With Install Kit PSS Shaft Seal Kit 1" Diameter Drive Shafts Comes With Install Kit
10%
$325.00 $360.00
PSS Shaft Seal Kit 1" Diameter Drive Shafts Comes With Install Kit
$325.00 $360.00
Fits all boats with 1" shaft and 1-3/4 length shaft log.  This kit COMES WITH the quick install kit; Item INSTKIT1.0X.37 Uses a Stainless Steel rotor that slides down...
PSS Shaft Seal Kit 1-1/8" Diameter Drive Shafts Comes With Install Kit
PSS Shaft Seal Kit 1-1/8" Diameter Drive Shafts Comes With Install Kit PSS Shaft Seal Kit 1-1/8" Diameter Drive Shafts Comes With Install Kit
32%
$325.00 $479.00
PSS Shaft Seal Kit 1-1/8" Diameter Drive Shafts Comes With Install Kit
$325.00 $479.00
Fits all boats with 1-1/8" shaft and 1-3/4 length shaft log.  COMES WITH the quick install kit; Item INSTKIT1.125X.37 Uses a Stainless Steel rotor that slides...
PSS Shaft Seal Kit For 1-1/4" Diameter Drive Shafts Comes With Install Kit
PSS Shaft Seal Kit For 1-1/4" Diameter Drive Shafts Comes With Install Kit PSS Shaft Seal Kit For 1-1/4" Diameter Drive Shafts Comes With Install Kit
11%
$355.00 $398.00
PSS Shaft Seal Kit For 1-1/4" Diameter Drive Shafts Comes With Install Kit
$355.00 $398.00
Fits all boats with 1-1/4" shafts This kit COMES WITH the quick install kit; Item INSTIKIT1.2X.37 Uses a Stainless Steel rotor that slides down the shaft and compresses the...
Puller for - Shafts - Bushings and Struts - The A.R.E. Slide Hammer Puller
Puller for - Shafts - Bushings and Struts - The A.R.E. Slide Hammer Puller Puller for - Shafts - Bushings and Struts - The A.R.E. Slide Hammer Puller
13%
$319.00 $368.00
Puller for - Shafts - Bushings and Struts - The A.R.E. Slide Hammer Puller
$319.00 $368.00
A.R.E. Shaft/Strut Bearing Puller The slide hammer design makes quick work of removing single-taper and double-taper drive shafts. Constructed of chrome-plated steel and features a...
Puller For Gimbal Bearings Sierra® 18-7920-2
Puller For Gimbal Bearings Sierra® 18-7920-2
22%
$340.56 $438.09
Puller For Gimbal Bearings Sierra® 18-7920-2
$340.56 $438.09
Gimbal Bearing Puller Sierra® 18-7920-2 Removes gimbal bearing from Mercruiser, OMC & Volvo Penta stern drives. Sierra gimbal bearing puller tool For use with Mercruiser,...
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