# 828475A1 Mercury MerCruiser Cap Assembly Oil Tank | Genuine Quicksilver OEM Part

🔧 Product Description

  

Genuine Quicksilver Oil Tank Cap Assembly - Part Number: 828475A1

  

A genuine Quicksilver oil tank cap assembly for selected Mercury and Mariner 2-stroke oil-injection outboards. This cap assembly seals the engine-mounted oil tank and includes the dipstick / sealing arrangement used to check and retain oil in the tank.

  

⚙️ Key Features

  

• Genuine Quicksilver OEM oil tank cap assembly

• Correct Mercury part number 828475A1

• Oil tank cap with sealing function and dipstick-style level check

• Used on selected Mercury / Mariner 65HP to 125HP 2-stroke outboards

• Helps maintain correct oil tank sealing and oil level inspection

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 828475A1 current OEM oil tank cap assembly reference

  

OEM / Related Numbers:

  

• 828475A1

• 828475 A1

• 828475

• 828793 related oil cap reference

• 11-11316-1 related hardware reference

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Mercury / Mariner 2-stroke outboard engine-mounted oil tank cap applications

  

Typically suits:

  

• Engine models:

• Mercury / Mariner 65HP 2-stroke oil tank cap applications where 828475A1 is specified

• Mercury / Mariner 75HP 2-stroke oil tank cap applications where 828475A1 is specified

• Mercury / Mariner 90HP 2-stroke oil tank cap applications where 828475A1 is specified

• Mercury / Mariner 100HP 2-stroke oil tank cap applications where 828475A1 is specified

• Mercury / Mariner 115HP 2-stroke oil tank cap applications where 828475A1 is specified

• Mercury / Mariner 125HP 2-stroke oil tank cap applications where 828475A1 is specified

• Mercury / Mariner 65HP - 125HP 2-stroke oil-injection outboards using oil tank cap 828475A1

  

• HP Range: 65HP - 125HP

• Engine Type: Mercury / Mariner 2-stroke oil-injected outboard

• System Type: Engine oil tank cap assembly

  

🔌 Function

  

The oil tank cap seals the engine-mounted oil tank and allows oil level checking so the oil injection system can maintain correct oil supply.

  

Common signs of failure:

  

• Oil leakage around cap

• Cracked or missing cap

• Damaged seal or O-ring

• Oil tank does not hold pressure or seal correctly

• Dipstick or cap assembly damaged during service

  

📦 Condition

  

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 96.0 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 96.00 AUD | In stock |

## Images

- 828475A1 Mercury MerCruiser Cap Assembly Oil Tank | Genuine Quicksilver OEM Part

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> Source: [Sawley's Auto and Marine](www.sawleysautoandmarine.com.au/products/828475a1-mercury-mercruiser-cap-assembly-oil-tank-genuine-quicksilver-oem-part)
> Updated: 2026-05-17