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Oil Reservoir- 1257-87421

Satisfaction rating 5 out of 5 (7 Ratings)
You save $4.37. (5%) $87.42
Leaves in 3-5 days
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  • This is an OEM part manufactured by Mercury Marine
  • Flat rate shipping starting at $4.95
  • 30 day return policy

Product Description

Mercury factory part. Search for more factory parts & parts diagrams.

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7 Product Reviews


Mercury Optimax 150 outboard

Repair Difficulty
Repair Time
30 to 60 mins
It was excellent. The parts were shipped on a very timely basis, it was the exact OEM part I needed and all is good! And--it was less expensive than the factory OEM part.

Problem fixed: Replaced oil reservoir in boat, the old one had a pinhole leak.

First, I couldn't even find the hole in the old oil tank. It must have been a microscopic pinhole. I didn't want to have any air get into the oil lines when I removed the old tank and replaced it with the new one because of the risk of having to bleed the air on the engine mounted tank--which is a large pain in the butt. Removing the cap on the old tank was the hardest part because it was twisted on very, very tight and I had to use a screwdriver and hammer to get the cap to turn. After removing the caps and oil pick up tube, it was just a matter of placing them into the new tank and tightening everything up. Done.

Mercury Outboard 175 hp V6 Black Max 1989

Repair Difficulty
Repair Time
1 to 2 hours
Good. I purchased a new Remote Control for my Mercury OB (1989). I installed it no problems. Ready to take the boat out to the lake this Monday. Prior to this purchase, I bought the same RC part from a eBay seller. It was advertised as New, but at a reduced price. I opened up the box (which was re-taped) , looked it over and noticed that the Power Trim Button was loose in the handle. Not Good! I requested a refund reason defective part and was lucky to be allowed to send it back using the prepaid shipping label and get a full refund. Dodged a bullet on that deal! I then placed an order from Crowley

Problem fixed: Replaced Remote Control Unit

See Above


Mercury xr6 150 1992


Mercury optimax 150

Repair Difficulty
Repair Time
Less than 30 mins
Great parts, great customer service! Will always go back to them for what ever I need.

Problem fixed: Oil alarm going off

Found oil tank on the block to have failed. Easy to replace three bolts and two wires less then 15 minutes.


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Name SKU Superceding SKU
Oil Tank Kit 8742 87421
Due to manufacturer policy OEM Mercury products can only be shipped to addresses within the United States.