Description

Mercury MerCruiser Quicksilver 8M0236553 is a genuine OEM aluminum trim tab anode for select Mercury and MerCruiser applications. Mercury’s current product page identifies 8M0236553 specifically as an aluminum trim tab anode, built to help protect the drive and engine from galvanic corrosion in both freshwater and saltwater service.

Key Features

• Genuine Mercury / Quicksilver OEM part number 8M0236553.
• Officially described by Mercury as an aluminum trim tab anode.
• Designed to help protect the drive and engine from galvanic corrosion in freshwater or saltwater.
• Made from cast aluminum with a large surface area for improved corrosion-fighting efficiency.
• Built to Mercury Marine OEM specifications.

Engine Compatibility

The strongest supportable fitment for 8M0236553 is select Mercury and MerCruiser engines 35 HP and up. Current Mercury product information states that directly, while current dealer references further narrow common coverage to most 35–125 HP Mercury/Mariner outboards and all MerCruiser except Bravo series.

Serial Number Fitment Notice

Verify fitment by exact engine serial number, gearcase, and trim tab / anode diagram before ordering. This is especially important because trim tab anodes can vary by lower-unit style and propeller clearance even when they look similar. Current dealer references also specifically note checking for adequate propeller clearance before operation.

When This Part Needs Replacement

Replace this anode when it becomes heavily eroded, unevenly consumed, damaged, or no longer provides effective corrosion protection. Anodes are sacrificial by design, so routine inspection and timely replacement are part of normal drive and engine protection service. This service guidance is consistent with Mercury’s stated purpose for the part.

Installation Notes

Install 8M0236553 only after confirming the correct Mercury or MerCruiser application and checking propeller clearance. Because this part serves as both a trim tab and a sacrificial anode, it should be matched to the exact lower-unit layout and installed in the correct orientation for the application being serviced. The propeller-clearance caution is specifically supported by current dealer references.

Alternate/Superseded Part Numbers

Current cross-reference sources show 31640T07 / 31640T-07 as the earlier superseded Mercury number for 8M0236553.

Parts Desk Insight

On parts like this, the important match is not just “trim tab” but the exact trim tab anode style for the lower unit. The easiest mistake is ordering by shape alone without confirming the engine family, lower-unit application, and propeller clearance.

Shipping: Ships same or next day for fast Canada wide shipping.