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Impellers

Marine Impellers & Water Pump Service Parts

Shop Boat Impellers & Impeller Kits

Find marine impellers, impeller kits, run-dry impellers, and water pump service kits for outboard, inboard, and sterndrive engines. Search by part number, engine brand, or product type to keep your cooling system moving water properly and help protect your engine from overheating.

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Maintenance Guide

Not sure when to replace your impeller? Read our quick guide before ordering.

How Often Should You Replace Your Boat Impeller?

⚠️ Always confirm fitment using your engine serial number, pump model, or existing part number before ordering.

Volvo Penta Mercury / MerCruiser Yanmar Yamaha Suzuki Sierra Crusader Indmar PCM

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Shop by Category

Choose the part type that matches your job, from a simple impeller replacement to a more complete water pump service.

All Impellers Run-Dry Impellers Impeller Kits Outboard Impellers Inboard Impellers Sterndrive Impellers Water Pump Service Kits

Why It Matters

Impellers Protect Your Cooling System

A marine impeller is one of the most important service parts in your raw-water cooling system. Worn, cracked, or missing vanes can reduce cooling water flow and lead to overheating.

We carry trusted marine brands including Yamaha, Mercury, Suzuki, Volvo Penta, Sierra, and more for routine service, seasonal maintenance, and cooling-system repairs.

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Search by Part Number

Already have the old impeller, kit box, or parts diagram? Enter the part number in the search bar for the fastest match.

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Match the Engine or Pump

Similar-looking impellers can use different hub styles, widths, diameters, splines, or kit contents. Confirm fitment before ordering.

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Service Before Failure

Replacing the impeller during regular maintenance is usually cheaper than troubleshooting an overheat after a failure.

Parts Desk Guidance

Impeller Only or Complete Kit?

If your water pump housing and wear surfaces are clean, an impeller-only replacement may be enough. If the service history is unknown, the old impeller is damaged, or the wear plate, cup, seals, or gaskets are worn, an impeller kit or water pump service kit is usually the smarter repair.

Choose an impeller For routine replacement when the pump body is already in good condition.
Choose an impeller kit When gaskets, keys, seals, or related service pieces should be replaced at the same time.
Choose a water pump service kit For a more complete cooling-system service where wear surfaces may also need attention.

Common Questions

Boat Impeller Buying Help

How do I find the correct boat impeller?

Start with your existing part number, engine serial number, pump model, or OEM parts diagram. Measurements can help, but they should not replace exact part-number confirmation.

Should I buy an impeller kit instead of just the impeller?

Choose a kit when the pump has unknown service history, damaged gaskets, worn seals, or scored wear surfaces. A complete kit can save labor compared with opening the pump again later.

When should a boat impeller be replaced?

Inspect it at least once per season and replace it sooner if cooling flow drops, the engine runs warm, the boat was run dry, or the impeller shows cracking, stiffness, or missing vanes.

Can I match an impeller by appearance?

Appearance alone is not reliable. Many impellers look similar but differ in width, diameter, hub design, shaft fit, or kit components.

Ready to Find Your Part?

Search Marine Impellers, Kits & Water Pump Parts

Use the search bar or browse by brand and category to find the right cooling-system service part for your engine.

Search All Impellers Volvo Penta Mercury / MerCruiser Yanmar

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Volvo Penta Impeller Kit 21700445

$125.00 - $125.00
$125.00
$125.00
$125.00 - $125.00
$125.00
Out of stock

The Volvo Penta Impeller Kit 21700445 is a complete raw water pump service kit designed to maintain proper cooling system performance in modern Vol...

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$125.00 - $125.00
$125.00
$125.00
$125.00 - $125.00
$125.00
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Mercury Water Pump Repair Kit 821354A2

$110.26 - $110.26
$110.26
$110.26 - $110.26
$110.26
Out of stock

Mercury MerCruiser 821354A2 is a genuine OEM water pump repair kit for select Mercury and Mariner outboards. This kit is designed to restore proper...

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$110.26 - $110.26
$110.26
$110.26 - $110.26
$110.26
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Volvo Penta Impeller Kit 22307636 – D9 D11 D12 Raw Water Pump Service Kit

$120.00 - $120.00
$120.00
$120.00
$120.00 - $120.00
$120.00
Out of stock

Product Description The Volvo Penta Impeller Kit 22307636 is a complete raw water pump service kit designed to maintain proper cooling system perf...

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$120.00 - $120.00
$120.00
$120.00
$120.00 - $120.00
$120.00
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Volvo Penta Impeller Kit 21951342

$71.00 - $71.00
$71.00
$71.00
$71.00 - $71.00
$71.00
Out of stock

Volvo Penta 21951342 is a genuine OEM impeller kit used in Volvo Penta raw-water cooling system service. Current parts sources consistently identif...

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$71.00 - $71.00
$71.00
$71.00
$71.00 - $71.00
$71.00
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Sherwood 17000K Impeller Kit

$142.92 - $142.92
$142.92
$142.92
$142.92 - $142.92
$142.92
Out of stock

The Sherwood 17000K Impeller Kit is a complete raw water pump service kit designed for Sherwood 17000 series pumps used in marine engine cooling sy...

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$142.92 - $142.92
$142.92
$142.92
$142.92 - $142.92
$142.92
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Johnson Pump 09-812B-1 Impeller Kit (F6)

$92.29 - $92.29
$92.29
$92.29
$92.29 - $92.29
$92.29
Out of stock

The Johnson Pump 09-812B-1 Impeller Kit is a complete raw water pump service kit designed for Johnson F6 series pumps used in marine engine cooling...

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$92.29 - $92.29
$92.29
$92.29
$92.29 - $92.29
$92.29
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Onan 132-0498 Generator Impeller

$54.00 - $54.00
$54.00
$54.00
$54.00 - $54.00
$54.00
Out of stock

The Onan 132-0498 Impeller is a genuine-style replacement raw water pump impeller designed for Onan marine generator cooling systems. This impeller...

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$54.00 - $54.00
$54.00
$54.00
$54.00 - $54.00
$54.00
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Mercury MerCruiser Quicksilver Impeller 89984T4

$67.87 - $67.87
$67.87
$67.87
$67.87 - $67.87
$67.87
Out of stock

Mercury MerCruiser / Quicksilver Impeller – 89984T4 Maintain proper engine cooling and prevent overheating with the genuine Mercury Marine / Quicks...

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$67.87 - $67.87
$67.87
$67.87
$67.87 - $67.87
$67.87
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