Description

Mercury MerCruiser Quicksilver 25-20826 is a genuine Mercury Marine O-ring used across select Mercury, Mariner, MerCruiser, Bravo, jet-drive, transom, and Mercury Racing assemblies. Mercury parts references list this part as O-RING 2.230 x .139, with base manufacturer part number 20826. It is used as a sealing ring where the diagram specifically calls for this size and part number.

Key Features

• Genuine Mercury Marine / Quicksilver O-ring reference
• Size reference: 2.230 in. x .139 in.
• OEM part number: 25-20826
• Base part reference: 20826
• GTIN / UPC reference: 745061130197
• Catalog package reference: approximately 4.50 in. x 3.00 in. x 0.35 in.
• Broad-use sealing O-ring best matched by exact parts diagram location

Engine Compatibility

This O-ring appears in Mercury parts references across a wide range of supported assemblies, including select Bravo One, Bravo Two, Bravo Three, Bravo X, Bravo XR, Bravo SportMaster, integrated transom, high-performance transom, Mercury jet-drive, older Mercury outboard, and Mercury Racing engine applications depending on serial number and diagram location. It is also associated with select older Mercury 60 HP and Mark-series outboard references, plus several 120XR2, 175XR2, 200 DFI, 210 Carb, 240 EFI, and 250 DFI jet-drive component groups.

Serial Number Fitment Notice

O-ring fitment depends on the exact engine, drive, transom assembly, gear housing, jet-drive assembly, component group, and serial number range. Always confirm compatibility using the Mercury or MerCruiser serial number and the exact parts diagram before ordering.

When This Part Needs Replacement

Replace this O-ring whenever the related assembly is opened, or if the original seal is flattened, cut, swollen, brittle, cracked, missing, or no longer sealing properly. Reusing an old compressed O-ring can lead to leaks and repeat service.

Installation Notes

Clean the O-ring groove and mating surface before installation. Lightly lubricate the O-ring with the service-manual-approved lubricant where specified, and make sure it seats evenly without twisting, stretching, pinching, or rolling during assembly. Confirm the diagram location before installation because this O-ring is used in multiple Mercury and MerCruiser assemblies.

Alternate/Superseded Part Numbers

• 25-20826
• 20826
• 25-20311 — earlier superseded reference shown in supporting catalog references
• 20311
• 802020 — related Mercury reference in cross-reference listings
• Sierra 18-7104
• Sierra 18-7459
• GLM 82280
• Johnson / Evinrude / OMC 0308627, 0509370, 0777539, 308627

Parts Desk Insight

This O-ring has a broad application range, so the safest match is the exact diagram callout rather than engine size or drive family alone. If the diagram calls for 25-20826, use that reference instead of trying to match a generic O-ring by appearance.

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