36816976Q1 Mercury MerCruiser Fuel Cap Assembly | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver Manual-Vent Fuel Cap Assembly - Part Number: 36-816976Q1

A genuine Quicksilver replacement fuel cap assembly for Mercury and Mariner portable fuel tanks. This manual-vent cap is used on selected 3.2 gallon and 6.6 gallon portable tank assemblies and allows the fuel tank to vent correctly while helping seal the filler opening during transport and operation.

⚙️ Key Features

• Genuine Quicksilver OEM fuel cap assembly

• Correct Mercury part number 36-816976Q1

• Manual-vent cap for Mercury / Mariner portable fuel tanks

• Used on selected 3.2 gallon and 6.6 gallon plastic fuel tank assemblies

• Replaces earlier 816976A1 fuel cap reference

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 36-816976Q1 → Supersedes 36-816976A1

• 816976Q1 → Supersedes 816976A1

• 816976A1 earlier OEM fuel cap reference

OEM / Related Numbers:

• 36-816976Q1

• 816976Q1

• 36-816976T1

• 816976T1

• 36-816976A1

• 816976A1

• 8169771 related fuel cap gasket

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Mercury and Mariner portable fuel tank cap applications

Typically suits:

• Fuel tank / engine applications:

• Mercury / Mariner portable fuel tank replacement cap applications using 36-816976Q1

• Mercury / Mariner plastic 3.2 gallon portable fuel tank assemblies using manual-vent cap 816976Q1

• Mercury / Mariner plastic 6.6 gallon portable fuel tank assemblies using manual-vent cap 816976Q1

• Mercury / Mariner fuel tank assemblies, serial group 0N056165 and up, where 816976Q1 is specified

• Mercury 6HP portable fuel tank assembly applications where 816976Q1 is specified

• Mercury 8HP portable fuel tank assembly applications where 816976Q1 is specified

• Mercury 9.9HP portable fuel tank assembly applications where 816976Q1 is specified

• Mercury 13.5HP 4-Stroke International fuel tank - serial 0P134638 to 0P400999

• Mercury 13.5HP 4-Stroke International fuel tank - serial 0P401000 and up

• Mercury 15HP portable fuel tank assembly applications where 816976Q1 is specified

• Mercury 15HP Marathon 2-stroke fuel tank assembly - serial 0P017000 to 0P325499

• Mercury 15HP SeaPro fuel tank assembly - serial 0P325500 and up

• Mercury 15HP SeaPro fuel tank assembly, plastic 6.6 gallon tank, where 816976Q1 is specified

• Mercury 25HP SeaPro 4-Stroke International portable fuel tank applications where 816976Q1 is specified

• Mariner 6.6 gallon plastic portable fuel tank assemblies where 816976Q1 is specified

• Quicksilver portable fuel tank replacement cap applications using manual-vent cap 816976Q1

• HP Range: portable tank applications across selected small Mercury / Mariner outboards

• Engine Type: Mercury / Mariner portable-tank outboard applications

• System Type: Portable fuel tank filler cap / manual vent assembly

🔌 Function

The fuel cap seals the portable tank filler neck and allows controlled manual venting so fuel can flow correctly while helping reduce spillage and vapour pressure build-up.

Common signs of failure:

• Fuel smell or leakage around the cap

• Cracked, damaged or missing cap

• Tank does not vent correctly

• Engine fuel starvation from closed or faulty venting

• Hardened or leaking fuel cap gasket

📦 Condition

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging