Mercury Oil Tank Assembly – 828361A2

The Mercury 828361A2 oil tank assembly is designed for select Mercury and Mariner 2-cycle oil-injected outboards. This reserve tank helps store and supply oil for the automatic oil injection system, supporting proper lubrication during engine operation.

Mercury 828361A2 is a 2-cycle oil reserve tank assembly used on select Mercury and Mariner oil-injected outboards. It stores oil for the automatic injection system and has been superseded in many applications, so confirm the current replacement before ordering.

What This Oil Tank Assembly Does

• Stores 2-cycle oil for compatible Mercury and Mariner oil-injected outboards
• Supports the automatic oil injection system
• Helps maintain proper oil supply during engine operation
• Replaces damaged, leaking, cracked, or aging oil reserve tanks where compatible
• May supersede or replace older Mercury oil tank assembly part numbers, depending on application

Fitment Notes

This oil tank assembly is not universal. Fitment depends on your Mercury or Mariner outboard model, horsepower, production year, and serial number. Because 828361A2 has been superseded in many applications, verify the correct current replacement part before ordering.

Replacement Reminder

Inspect the oil tank, cap, hoses, fittings, oil level sensor, and related oil injection components during service. If the tank is cracked, leaking, discolored, or contaminated, replacement may help prevent oil delivery issues. Always bleed or prime the oil system as directed in the Mercury service manual after replacing oil injection components.

Frequently Asked Questions

What is Mercury 828361A2?

Mercury 828361A2 is a 2-cycle oil reserve tank assembly used on select Mercury and Mariner oil-injected outboards.

What does the oil reserve tank do?

The oil reserve tank stores 2-cycle oil for the automatic oil injection system, helping supply oil to the engine as needed during operation.

Does Mercury 828361A2 fit every Mercury outboard?

No. This part fits select Mercury and Mariner oil-injected 2-cycle outboards only. Confirm compatibility by engine serial number before ordering.

Has Mercury 828361A2 been superseded?

Yes, it has been superseded in many applications. Always verify the current Mercury replacement part number before purchase.

What should I check when replacing an oil tank assembly?

Check the oil lines, fittings, cap, sensor, hose clamps, and any signs of air leaks or contamination. Follow the proper priming or bleeding procedure before running the engine.