Towing Equipment› Hitches

SIERRAMARINE

IMPELLER

$44.97

SKU: S08C 18-8921

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Sierra 18-8921 Impeller is a replacement water pump impeller designed for marine engines. It is compatible with various Nissan and Tohatsu outboard models, including 9.9, 15, and 18 HP engines, as well as their 4-stroke B models.

This impeller is interchangeable with Nissan/Tohatsu part numbers 334-65021-0 and 334650210M.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandSIERRAMARINE
Part NumberS08C 18-8921

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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