Boot, Shift Shaft – Fits Mercury & Mercruiser Outboards (Replaces 822158)
Boot, Shift Shaft – Fits Mercury & Mercruiser Outboards (Replaces 822158) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Boot, Shift Shaft – Fits Mercury & Mercruiser Outboards (Replac...
Product Details
This durable rubber Boot, Shift Shaft is designed to protect the critical shift mechanism on a wide range of Mercury and Mercruiser 25–50 HP 2-Stroke & 4-Stroke outboard models manufactured from 1995 to 2012 and newer. It provides a vital seal against water intrusion and environmental contaminants, ensuring smooth and reliable gear shifting.
This part is a direct replacement, offering a precise fit for OEM part number Mercury/Mercruiser 822158 and popular aftermarket equivalents including Sierra 18-2726 and SEI 602-98-263-23.
- Engineered for a direct OEM-equivalent fit and function.
- Constructed from high-grade black rubber for longevity in marine environments.
- Essential for preventing water and debris from damaging internal gearcase components.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury/Mercruiser | 822158 |
| Sierra | 18-2726 |
| SEI | 602-98-263-23 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This component is specifically designed for various Mercury and Mercruiser outboard engines. Please verify your engine's serial number against the listed ranges to ensure an exact match.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | 25 (4-Stroke) | 25 | 4-Stroke | 1997–2012 | 822158 | Various serial ranges: 0G590000-0G760299, 0G760300-0T408999, 0P017000-0P153499, 0P153500-0P388282, 0T409000-1B344298, 9973100-0P016999 |
| Mercury | 30 (2 Cyl.) | 30 | 2-Stroke | 1995–2012 | 822158 | Various serial ranges: 0G055314-0G760299, 0G760300-0T979999, 0P017000-0P325499, 0P325500 & Up, 0T980000-0T999999, 1B000001 & Up, 9854537-0P016999 |
| Mercury | 30 (4-Stroke) | 30 | 4-Stroke | 1997–2012 | 822158 | Various serial ranges: 0G760300-0T408999, 0P017000-0P153499 |
| Mercury | 30 Carb & EFI (3 Cyl.)(4-Stroke) | 30 | 4-Stroke | 2006–2012 | 822158 | Serial ranges: 0P153500-0P400999, 0T409000-1B226999 |
| Mercury | 30 JET (3 Cyl.) | 30 | 2-Stroke | 1997–2006 | 822158 | Serial ranges: 0G590000-0G760299, 0G760300-0T408999, 0P017000-0P153499, 9973100-0P016999 |
| Mercury | 40 (2 Cyl.) | 40 | 2-Stroke | 1995–2012 | 822158 | Various serial ranges: 0G055314-0G760299, 0G760300-0T979999, 0P017000-0P325499, 0P325500 & Up, 0T980000-0T999999, 1B000001 & Up, 9854537-0P016999 |
| Mercury | 40 (3 Cyl.) | 40 | 2-Stroke | 1997–2012 | 822158 | Various serial ranges: 0G590000-0G760299, 0G760300-0T979999, 0P017000-0P325499, 0P325500 & Up, 0T980000-1B209735, 9973100-0P016999 |
| Mercury | 40 (4-Stroke) | 40 | 4-Stroke | 1997–2006 | 822158 | Serial ranges: 0G231123-0G760299, 0G760300-0T408999, 0P017000-0P153499, 9944807-0P016999 |
| Mercury | 40 Carb & EFI (3 Cyl.)(4-Stroke) | 40 | 4-Stroke | 2006–2012 | 822158 | Various serial ranges: 0P153500-0P515896, 0T409000-1B344398, 1B227000-1B344306, 1C000001-1C043416 |
| Mercury | 40 HP | 40 | 2-Stroke | 1995–1999 | 822158 | Serial ranges: 0E093700-0E369299 |
| Mercury | 40 ITALY (4-Stroke) | 40 | 4-Stroke | 1999–2006 | 822158 | Serial ranges: 0G760300-0T178499, 0P017000-0P094499 |
| Mercury | 45 BODENSEE (4-Stroke) | 45 | 4-Stroke | 1997–2006 | 822158 | Various serial ranges: 0G231123-0G760299, 0G760300-0T178499, 0P017000-0P094499, 9944807-0P016999 |
| Mercury | 50 (3 Cyl.) | 50 | 2-Stroke | 1997–2012 | 822158 | Various serial ranges: 0G590000-0G760299, 0G760300-0T979999, 0P017000-0P325499, 0P325500 & Up, 0T980000 & Up, 1B000001 & Up, 9973100-0P016999 |
| Mercury | 50 (4-Stroke) | 50 | 4-Stroke | 1997–2006 | 822158 | Various serial ranges: 0G231123-0G760299, 0G760300-0T178499, 0P017000-0P094499, 9944807-0P016999 |
| Mercury | 50 BIGFOOT (4-Stroke) | 50 | 4-Stroke | 1997–2006 | 822158 | Various serial ranges: 0G231123-0G760299, 0G760300-0T178499, 0P017000-0P094499, 9944807-0P016999 |
| Mercury | 50 HP | 50 | 2-Stroke | 1995–1999 | 822158 | Serial ranges: 0E093700-0E369299 |
Technical Specs
- Product Type
- Shift Shaft Boot
- Installation
- Direct OEM replacement
- Connection
- Fits shift shaft
- Housing Material
- Rubber
- Housing Color
- Black
- Dimensions
- Length: 2.50 in (63.5 mm), Width: 1.75 in (44.45 mm), Height: 1.25 in (31.75 mm)
- Weight
- 0.03 lb (13.6 g)
- Fitting Type
- Snug fit over shaft
- Warranty
- 1 year (OEM)
- GTIN
- 745061337046
What’s in the Box
- 1 x Boot (822158)
Installation Notes
- Ensure the engine is off and disconnect the battery for safety.
- Access the shift shaft, which may require removing the lower unit or other housing components depending on your engine model.
- Carefully remove the old, deteriorated boot from the shift shaft, taking note of its orientation.
- Thoroughly clean the shift shaft and the surrounding area to remove any old rubber residue, dirt, or grease.
- Gently slide the new shift shaft boot into place, ensuring it is properly seated and forms a secure seal.
- Reassemble any components that were removed and reconnect the shift linkage.
- Once assembled, reconnect the battery and test the shifting mechanism to confirm smooth and correct operation before use.
Troubleshooting & FAQ
How do I know if this shift shaft boot will fit my engine?
This boot is designed for a wide range of Mercury and Mercruiser 25–50 HP models (1995+). The most reliable method is to cross-reference your engine's model and serial number with the detailed compatibility table on this page. Also, verify that your existing part number matches one of the references, such as 822158.
What are the signs that my old shift shaft boot needs replacing?
A failing boot will typically show visible signs of wear, such as cracking, splitting, or becoming hard and brittle. Functionally, a failed boot can lead to water entering the gearcase, causing corrosion, lubrication failure, and stiff or difficult shifting.
Can I install this boot myself?
While installation is possible for those with mechanical experience, it often involves partial disassembly of the lower unit. For safety and to ensure a proper seal, we recommend professional installation if you are not familiar with outboard engine service procedures.
How often should this boot be inspected?
It is best practice to inspect the shift shaft boot during regular annual service or whenever the gearcase lubricant is changed. Proactive replacement at the first sign of wear can prevent costly future repairs from water intrusion.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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