Sierra NEW Water Pump Kit w/ Housing 18-3311 150-200HP Rep: 6G5-W0078-A1-00 0810

Sierra Water Pump Kit with Housing & Cup — Part Number 18-3311
Brand: Sierra | Condition: New Old Stock (NOS)

You are purchasing a new Sierra Water Pump Kit with Housing and Cup, part number 18-3311, for Yamaha 2-stroke outboard motors. This is a genuine Sierra branded part — never installed, never used.

Kit Contents:

• (1) Water Pump Housing
• (1) Impeller Cup
• (1) Impeller & Key
• (1) Wear Plate
• (1) Gasket
• O-Rings
• Stainless Steel Bolts

Note: If housing is NOT needed, order Mallory 9-48601 or Yamaha 6G5-W0078-01-00 instead.

Condition Details:

This is a New Old Stock (NOS) part. The water pump 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.

Part Number / Supersede Information:

Primary Part Number: 18-3311
Replaces OEM Yamaha: 6G5-W0078-A1-00 | 6G5-W0078-00-00 | 6G5-W0078-01-00
Cross-References: Mallory 9-48614 | 9-48601

Fitment:

• Fits: Yamaha 150HP, 175HP, 200HP, L150, and L200 2-stroke outboard motors
• Please verify fitment using your motor's model and serial number before ordering

Why Choose Quality Replacement Parts?

Sierra parts are engineered to meet or exceed OEM specifications, providing reliable performance and a precise fit for your Yamaha outboard. Every Sierra part is purpose-built for harsh marine environments and backed by Sierra's limited lifetime warranty covering defects in workmanship and materials.

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 motor'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