Mercury Quicksilver NEW OEM Bearing Carrier O-Ring 25-31534 (LOT OF 4) 0810

Mercury OEM Bearing Carrier O-Ring — Part Number 25-31534
Brand: Mercury | Condition: New Old Stock (NOS)

You are purchasing a genuine Mercury OEM Bearing Carrier O-Ring, part number 25-31534. This O-ring seals the propeller shaft bearing carrier (bell housing) in the lower unit/gearcase, preventing gear lube leaks and water intrusion. This is a routinely replaced wear part during gearcase service and bearing carrier removal. This is an authentic factory original part — never installed, never used.

Condition Details: This is a New Old Stock (NOS) part. The O-ring itself is in new, uninstalled condition. As is common with NOS inventory, the original packaging may show signs of age, including shelf wear, dust, or minor cosmetic blemishes on the bag or box. The part is new and fully functional.

Part Number / Supersede Information:

• Primary OEM Part Number: 25-31534
• Also referenced as: 31534, 25-48451, 48451, 25-896524
• Superseded by: 8M0214920 / 25-8M0214920
• Sierra Aftermarket Cross-Reference: 18-7159
• OMC Cross-Reference: 0508501

Specifications:

• Type: Bearing Carrier O-Ring (Bell Housing / Propeller Shaft)
• Inside Diameter: 3.850"
• Width / Cross-Section: 0.210"
• Material: Nitrile (NBR) Rubber

Compatible Equipment (partial list — Mercury/Mariner outboards & MerCruiser sterndrives):

• Mercury/Mariner Outboards: L4, L6 & V6 65–225HP gearcase; V6 DFI/EFI 2.5L/3.0L/3.2L (225–300HP); Verado 135–300HP (2006+) gearcase
• MerCruiser Sterndrives: MC1/R, MR/Alpha One, Alpha One Gen II, Bravo I (1996–1998), Bravo II

Why Choose OEM Parts? OEM parts are engineered and manufactured to exact factory tolerances, ensuring a precise fit, reliable performance, and long service life. Unlike aftermarket alternatives, OEM parts are designed specifically for your equipment — no modifications, no guesswork.