Sold out -20% sale
Sierra Not Qualified for Free Shipping Sierra Upper Unit Gear Repair Kit #18-6353K
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Sierra Sierra Upper Unit Gear Repair Kit #18-6353K $387.47 $483.61
Sierra 18-6353K Gear SetsUpper Unit Gear Repair KitOEM Interchange:MERCURY MARINE: 43-803105T1Drive Parts: Upper Gear KitSierra Upper Unit Gear Repair Kit #18-6353KNormalized SKU: 186353KUPC Code: 808282200879
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Upper Unit Gear Repair Kit #18-6352K
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Sierra Sierra Upper Unit Gear Repair Kit #18-6352K $53.03 $63.63
Sierra 18-6352K Gear SetsUpper Unit Gear Repair KitOEM Interchange:MERCURY MARINE: 43-803106T1Drive Parts: Upper Gear KitSierra Upper Unit Gear Repair Kit #18-6352KNormalized SKU: 186352KUPC Code: 808282200862
Sold out -18% sale
Sierra Not Qualified for Free Shipping Sierra Upper Unit Gear Repair Kit #18-6350K
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Sierra Sierra Upper Unit Gear Repair Kit #18-6350K $726.55 $879.81
Sierra 18-6350K Gear SetsUpper Unit Gear Repair KitOEM Interchange:MERCURY MARINE: 43-803104T1Drive Parts: Upper Gear KitSierra Upper Unit Gear Repair Kit #18-6350KNormalized SKU: 186350KUPC Code: 808282200848
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Complete Gear Set-4-Cylinder #18-1550
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Sierra Sierra Complete Gear Set-4-Cylinder #18-1550 $73.16 $87.79
Sierra 18-1550 Gear SetsComplete Gear Set-4 cylOEM Interchange:MERCURY MARINE: 43-881260A3Sierra Complete Gear Set-4 cyl #18-1550Normalized SKU: 181550UPC Code: 808282203030
-20% sale
Sierra Complete Gear Set V-6 #18-1551
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Sierra Sierra Complete Gear Set V-6 #18-1551 $521.56 $650.97
Sierra 18-1551 Gear SetsComplete Gear Set V-6OEM Interchange:MERCURY MARINE: 43-803615T2Sierra Complete Gear Set V-6 #18-1551Normalized SKU: 181551UPC Code: 808282203054
Sold out -22% sale
Sierra Not Qualified for Free Shipping Sierra Upper Gear Kit #18-6353
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Sierra Sierra Upper Gear Kit #18-6353 $292.33 $371.28
Sierra 18-6353 Gear SetsUpper Gear KitOEM Interchange:MERCURY MARINE: 43-853643A2Drive Parts: Upper Gear KitSierra Upper Gear Kit #18-6353Normalized SKU: 186353UPC Code: 808282112820
Sold out -22% sale
Sierra Not Qualified for Free Shipping Sierra Upper Gear Kit #18-6351
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Sierra Sierra Upper Gear Kit #18-6351 $331.25 $420.71
Sierra 18-6351 Gear SetsUpper Gear KitOEM Interchange:MERCURY MARINE: 43-853641A2Drive Parts: Upper Gear KitSierra Upper Gear Kit #18-6351Normalized SKU: 186351UPC Code: 808282112806
Sold out -22% sale
Sierra Not Qualified for Free Shipping Sierra Upper Gear Kit #18-6352
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Sierra Sierra Upper Gear Kit #18-6352 $221.26 $281.01
Sierra 18-6352 Gear SetsUpper Gear KitOEM Interchange:MERCURY MARINE: 43-853642A2Drive Parts: Upper Gear KitSierra Upper Gear Kit #18-6352Normalized SKU: 186352UPC Code: 808282112813
Sold out -22% sale
Sierra Not Qualified for Free Shipping Sierra Upper Gear Kit #18-6350
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Sierra Sierra Upper Gear Kit #18-6350 $337.55 $428.72
Sierra 18-6350 Gear SetsUpper Gear KitOEM Interchange:MERCURY MARINE: 43-853640A2Drive Parts: Upper Gear KitSierra Upper Gear Kit #18-6350Normalized SKU: 186350UPC Code: 808282112790
Sold out -22% sale
Sierra Not Qualified for Free Shipping Sierra Gear Set #18-2410
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Sierra Sierra Gear Set #18-2410 $293.51 $372.78
Sierra 18-2410 Gear SetsGear SetOEM Interchange:MERCURY MARINE: 43-96084A7Sierra Gear Set #18-2410Normalized SKU: 182410UPC Code: 808282101077
Sold out -22% sale
Sierra Not Qualified for Free Shipping Sierra Reverse Gear #18-2409
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Sierra Sierra Reverse Gear #18-2409 $257.41 $326.93
Sierra 18-2409 Gear SetsReverse GearOEM Interchange:MERCURY MARINE: 43-92320TDrive Parts: Reverse GearSierra Reverse Gear #18-2409Normalized SKU: 182409UPC Code: 808282101060
-22% sale
Sierra Not Qualified for Free Shipping Sierra Reverse Gear #18-2408
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Sierra Sierra Reverse Gear #18-2408 $173.66 $220.56
Sierra 18-2408 Gear SetsReverse GearOEM Interchange:MERCURY MARINE: 43-828073A1Drive Parts: Reverse GearSierra Reverse Gear #18-2408Normalized SKU: 182408UPC Code: 808282101053
Sold out -20% sale
Sierra Not Qualified for Free Shipping Sierra Gear Set #18-2407
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Sierra Sierra Gear Set #18-2407 $568.27 $709.27
Sierra 18-2407 Gear SetsGear SetOEM Interchange:MERCURY MARINE: 43-878087A4Sierra Gear Set #18-2407Normalized SKU: 182407UPC Code: 808282101046
-22% sale
Sierra Gear Set #18-2406
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Sierra Sierra Gear Set #18-2406 $244.96 $311.11
Sierra 18-2406 Gear SetsGear SetOEM Interchange:MERCURY MARINE: 43-878087A2Sierra Gear Set #18-2406Normalized SKU: 182406UPC Code: 808282101039
Sold out -17% sale
Sierra Gear Repair Kit #18-2404
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Sierra Sierra Gear Repair Kit #18-2404 $42.86 $51.43
Sierra 18-2404 Gear SetsGear Repair KitOEM Interchange:MERCURY MARINE: 43-803079T1Sierra Gear Repair Kit #18-2404Normalized SKU: 182404UPC Code: 808282101015
Sold out -18% sale
Sierra Not Qualified for Free Shipping Sierra Gear Repair Kit #18-2405
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Sierra Sierra Gear Repair Kit #18-2405 $668.84 $809.92
Sierra 18-2405 Gear SetsGear Repair KitOEM Interchange:MERCURY MARINE: 43-803091T1Sierra Gear Repair Kit #18-2405Normalized SKU: 182405UPC Code: 808282101022
Sold out -20% sale
Sierra Not Qualified for Free Shipping Sierra Upper Unit Gear Repair Kit #18-2365
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Sierra Sierra Upper Unit Gear Repair Kit #18-2365 $412.06 $514.30
Sierra 18-2365 Gear SetsUpper Unit Gear Repair KitOEM Interchange:MERCURY MARINE: 43-803120T1Drive Parts: Upper Gear KitSierra Upper Unit Gear Repair Kit #18-2365Normalized SKU: 182365UPC Code: 808282124618
Sold out -20% sale
Sierra Not Qualified for Free Shipping Sierra Pinion and Foward Gear Set #18-2360
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Sierra Sierra Pinion and Foward Gear Set #18-2360 $505.07 $630.39
Sierra 18-2360 Gear SetsPinion & Foward Gear SetOEM Interchange:MERCURY MARINE: 43-828072A3Sierra Pinion & Foward Gear Set #18-2360Normalized SKU: 182360UPC Code: 808282124588
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Upper Unit Gear Repair Kit #18-2363
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Sierra Sierra Upper Unit Gear Repair Kit #18-2363 $53.99 $64.78
Sierra 18-2363 Gear SetsUpper Unit Gear Repair KitOEM Interchange:MERCURY MARINE: 43-803118T1Drive Parts: Upper Gear KitSierra Upper Unit Gear Repair Kit #18-2363Normalized SKU: 182363UPC Code: 808282124595
Sold out -20% sale
Sierra Not Qualified for Free Shipping Sierra Upper Unit Gear Repair Kit #18-2364
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Sierra Sierra Upper Unit Gear Repair Kit #18-2364 $481.58 $601.07
Sierra 18-2364 Gear SetsUpper Unit Gear Repair KitOEM Interchange:MERCURY MARINE: 43-803119T1Drive Parts: Upper Gear KitSierra Upper Unit Gear Repair Kit #18-2364Normalized SKU: 182364UPC Code: 808282124601

Frequently Asked Questions

First Choice Marine is an online marine retailer carrying a diverse line of marine parts and accessories and related items from industry-respected and demanded manufacturers and suppliers. Through our diverse distributor network, we are able to access over 150,000 items, including our current site inventory, new products being added, and special order items. If you need it on your boat... we are your one-stop shop!

Yes, we offer FREE Shipping on most orders over $149 to US-48*.

Each product displays a shipping status message, just above the item price. Below is the meaning for each of these codes.

  • Qualifies for Free Shipping: This item qualifies for free shipping when the order is $149+
  • Qualifies for Free Ground Shipping: This item qualifies for free ground shipping when the order is $149+.
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  • In-Store Pickup Only: This item can only be picked up in our Grain Valley, MO retail store

Below the price of the item, on the product page, there is a message indicating the availability of the product.

The quantity on hand is updated as inventory events happen and matches what we have available. If you have urgent needs and we are close to what you need, contact us, and we can confirm stock.

We offer a hassle-free return policy. If you're not completely satisfied with your purchase, you can return it within 30 days for a full refund or exchange.

If you need to return an item, please follow the guidelines here so we can process a prompt refund and assist you in finding the correct item.

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