Mercury Quicksilver NEW OEM Sea Water Pump Cover Kit 87631A4 454 502 V8 NOS 0810

Mercury / Quicksilver OEM Sea Water Pump Cover Kit — Part Number 87631A4
Brand: Mercury / Quicksilver | Condition: New Old Stock (NOS)

You are purchasing a genuine Mercury/Quicksilver OEM Sea Water Pump Cover Kit, part number 87631A4, for MerCruiser inboard engines. The sea water pump cover encloses the impeller housing on the raw water cooling pump, maintaining proper water flow and pressure through the cooling circuit. A cracked, worn, or corroded pump cover can cause coolant leaks, loss of cooling efficiency, and engine overheating. This kit contains the cover and associated hardware needed to complete the repair. This is an authentic factory original part — never installed, never used.

Condition Details: This is a New Old Stock (NOS) part. The cover kit 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.

⚠ Important: Always disconnect power and close the seacock before servicing the raw water pump. Verify engine serial number and model fitment before ordering.

Part Number / Supersede Information:

• Primary OEM Part Number: 87631A4
• This part number may have been superseded by an updated Mercury/Quicksilver part number. We recommend verifying any current supersede numbers through your local Mercury Marine dealer or the official Mercury parts catalog prior to ordering.

Compatible Equipment: MerCruiser inboard engines including 5.7L V8 Bravo Inboard MPI (SKI) Gen VI GM 454 V-8 (1996–1997), 8.2L MIE Gen V GM 502 V-8 with Hurth transmission (1993–1996), 600SC Gen IV & V GM 502 V-8 (1991–1996) — verify specific engine serial number and model fitment prior to ordering.

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 engine — no modifications, no guesswork.

Returns: We proudly offer hassle-free returns. If you are not completely satisfied with your purchase for any reason, simply open a return request through eBay within 30 days of purchase and we will take care of you promptly.

Thank you for choosing QBS Parts Inc! We truly appreciate your business. If you have any issues whatsoever with your order, please give us the opportunity to resolve it before leaving feedback — we are committed to making every transaction a great experience. Please verify fitment using your equipment's model and serial number before purchasing. Feel free to message us with any questions — we're here to help!

QBS Parts, Inc. — Gardena, CA