Impeller Kit, Onan – Sierra 47-233310
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Sierra 47-233310 Impeller Kit for Onan (Cummins Onan) marine generators. This raw water pump impeller service kit restores cooling system performance on Onan marine gensets. Includes impeller and all necessary gaskets and seals for a complete pump rebuild.
Best Use (Parts Desk): Recommended for scheduled raw water pump maintenance on Onan marine generators — typically every 200–300 hours or annually, whichever comes first. Inspect the impeller housing for scoring or wear before installation. Use glycerin or dish soap (never petroleum grease) to ease impeller installation. Pair with an Onan fuel filter and oil filter service at the same interval for a complete genset maintenance event. Confirm pump model compatibility against your Onan/Cummins Onan service manual before ordering.
Part Number: Sierra 47-233310 | Onan / Cummins Onan marine generator compatible
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.