# 27858935 Mercury MerCruiser Shift Rod Housing Gasket | Genuine Quicksilver OEM Part

🔧 Product Description

  

Genuine Quicksilver Shift Rod Housing Gasket - Part Number: 27-858935

  

Genuine Quicksilver shift rod housing gasket used in Mercury / Mariner lower-unit gearcase assemblies. This gasket seals the shift rod housing to the gearcase and is used on selected Mercury / Mariner outboards, including higher horsepower 200HP to 250HP applications where the diagram specifies 27-858935.

  

⚙️ Key Features

  

• Genuine Quicksilver OEM shift rod housing gasket

• Correct Mercury part number 27-858935

• Used in gearcase shift rod housing assemblies

• Important lower-unit reseal component

• Helps prevent water entry around shift rod housing

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 27-858935 current OEM shift rod housing gasket reference

  

OEM / Related Numbers:

  

• 27-858935

• 858935

• 27858935

• Shift rod housing gasket

• Shift shaft housing gasket

• Gearcase shift housing gasket

• 26-892361 related selector oil seal family

• 23-99291T related shift shaft bushing family

  

Aftermarket / Verified Equivalents:

  

• Sierra: 18-0649

• SIE 0649

• Aftermarket cross-reference: 05-0171

• Aftermarket cross-reference: 1410-3801 / 14103801

• WSM / aftermarket shift housing gasket equivalents where matched to 27-858935

  

🚤 Compatibility

  

Commonly used on:

  

• Mercury / Mariner shift rod housing assemblies

• Mercury / Mariner lower-unit reseal service

• 200HP, 225HP and 250HP Mercury / Mariner gearcases where 27-858935 is specified

• Smaller and mid-range gearcases where the same shift rod housing gasket appears in the diagram

  

Typically suits:

  

• Engine models:

• Mercury / Mariner 200HP outboard gearcase applications where 27-858935 is specified

• Mercury / Mariner 225HP outboard gearcase applications where specified

• Mercury / Mariner 250HP outboard gearcase applications where specified

• Mercury V6 / high-output lower-unit shift rod housing applications where 27-858935 is shown

• Mercury / Mariner gearcases using shift rod housing gasket 27-858935 in the lower-unit diagram

  

• HP Range: commonly selected Mercury / Mariner gearcases, including 200HP - 250HP where specified

• Engine Type: Mercury / Mariner outboard gearcase

• System Type: Shift rod housing gasket / lower-unit seal

  

🔌 Function

  

The gasket seals the shift rod housing to the gearcase, helping prevent water intrusion and gear oil leakage around the shift mechanism.

  

Common signs of failure:

  

• Water entering gear oil

• Gear oil leakage near shift rod housing

• Failed lower-unit pressure test

• Gasket torn during shift rod housing removal

• Corrosion around housing face

• Replacement required during gearcase reseal

  

📦 Condition

  

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 16.1 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 16.10 AUD | In stock |

## Images

- 27858935 Mercury MerCruiser Shift Rod Housing Gasket | Genuine Quicksilver OEM Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/27858935-mercury-mercruiser-shift-rod-housing-gasket-genuine-quicksilver-oem-part)
> Updated: 2026-07-18