2532546 Mercury MerCruiser O-Ring | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver Lower End Cap O-Ring - Part Number: 25-32546

A genuine Quicksilver O-ring used in Mercury / Mariner outboard lower end cap and related sealing applications. This O-ring is a 3.239" x .070" sealing ring used on selected Mercury / Mariner 30 Jet, 40HP, 50HP, 60HP, 70HP, 75HP, 80HP, 90HP and 115HP outboards where the parts diagram specifies 25-32546.

⚙️ Key Features

• Genuine Quicksilver OEM O-ring

• Correct Mercury part number 25-32546

• 3.239" x .070" lower end cap O-ring

• Used in selected Mercury / Mariner inline-cylinder outboard assemblies

• Cross-references with Sierra, SEI and Mallory O-ring references

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 25-32546 current OEM service reference

OEM / Related Numbers:

• 25-32546

• 32546

• 2532546

• Mercury 25-32546

• Quicksilver 25-32546

• Lower end cap O-ring reference

• 1171-9812A8 related lower end cap reference

• 25-31534 related bearing carrier O-ring in alternate gearcase seal applications

• 25-8M0214920 related current bearing carrier O-ring reference

Aftermarket / Verified Equivalents:

• Sierra: 18-7161

• SEI Marine: 95-106-05

• Mallory: 9-76546

🚤 Compatibility

Commonly used on:

• Mercury / Mariner lower end cap sealing applications

• Mercury / Mariner inline-cylinder outboard assemblies where 25-32546 is specified

• Selected 30 Jet through 115HP two-stroke outboard sealing locations

Typically suits:

• Engine models:

• Mercury 30 Jet applications where lower end cap O-ring 25-32546 is specified

• Mercury 40HP / 400 4-cylinder applications where 25-32546 is specified

• Mercury 40HP 4-cylinder - serial 0C159200 and up where the end cap diagram specifies 25-32546

• Mercury 50HP 3-cylinder applications where 25-32546 is specified

• Mercury 50HP 3-cylinder - serial 0D000750 to 0G589999 where specified

• Mercury 60HP 3-cylinder applications where 25-32546 is specified

• Mercury 60HP 3-cylinder - serial 0D000750 and up where specified

• Mercury 70HP / 700 3-cylinder applications where 25-32546 is specified

• Mercury 75HP 4-cylinder applications where 25-32546 is specified

• Mercury 75HP 3-cylinder applications where 25-32546 is specified

• Mercury 80HP / 800 4-cylinder applications where 25-32546 is specified

• Mercury 90HP / 900 6-cylinder applications where 25-32546 is specified

• Mercury 90HP 3-cylinder applications where 25-32546 is specified

• Mercury 115HP / 1150 6-cylinder applications where 25-32546 is specified

• Mercury 115HP 4-cylinder applications where 25-32546 is specified

• Mariner 30 Jet, 40HP, 50HP, 60HP, 70HP, 75HP, 80HP, 90HP and 115HP applications using Mercury O-ring 25-32546 where specified

• HP Range: commonly 30 Jet - 115HP where specified

• Engine Type: Mercury / Mariner inline-cylinder outboard

• System Type: Lower end cap / large O-ring sealing component

• O-Ring Size: 3.239" x .070"

🔌 Function

The O-ring seals the lower end cap or specified housing joint to prevent leakage past the mating surfaces. Correct sealing helps maintain pressure, lubrication separation and component protection in the assembly where it is fitted.

Common signs of failure:

• O-ring flattened, brittle or cut during service

• Oil, water or residue leaking from the end cap joint

• Corrosion around the end cap sealing surface

• Poor seal after end cap removal

• Replacement required whenever the lower end cap is removed

📦 Condition

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging