Mercury Quicksilver NEW OEM Engine Block Manifold Drain Plug Kit 22-16951A1 0810

Mercury / Quicksilver OEM Engine Block / Manifold Drain Plug — Part Number 22-16951A1
Brand: Mercury / Quicksilver | Condition: New Old Stock (NOS)

You are purchasing a genuine Mercury / Quicksilver OEM Engine Block and Exhaust Manifold Drain Plug, part number 22-16951A1. This machined brass drain plug with 1/4" NPT fitting installs in the engine block or exhaust manifold drain port on MerCruiser sterndrive and inboard engines, allowing easy drainage of cooling water for winterizing or coolant changes. Compatible with both closed cooler and raw water cooling systems. May also fit other sterndrive and inboard engine brands. This is an authentic factory original part — never installed, never used.

Condition Details: This is a New Old Stock (NOS) part. The drain plug 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.

Specifications:

• Type: Engine Block / Manifold Drain Plug (Drain Cock)
• Material: Machined Brass
• Thread: 1/4" NPT

Part Number / Supersede Information:

• Primary OEM Part Number: 22-16951A1 / 16951A1
• Also referenced as: 22-16951Q1 / 16951Q1, 22-16951T1
• Cross-References: Sierra 18-4218, GLM 13993, Mallory 9-41201, Volvo Penta 82745, Barr/OMC 50-979957, Redline RL4218

Compatible Equipment:

• MerCruiser sterndrive and inboard engine blocks and exhaust manifolds — most models
• Other brands of sterndrive and inboard engines — verify fitment by thread size (1/4" NPT) before 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 equipment — 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 engine'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