Sierra 18-3214 Impeller Repair Kit, Replaces Mercury 8M0100526, for MerCruiser Alpha One Gen II & Vazer

The Sierra 18-3214 Impeller Repair Kit is a complete water pump service kit for MerCruiser Alpha One Generation II and MerCruiser Vazer sterndrives with serial number 0D494569 and above. The impeller is molded from a neoprene rubber compound that provides flexibility for reliable engagement at start-up along with long-lasting performance under continuous cooling system operation. Every impeller is inspected and tested for proper bonding and performance, and the kit is built to meet or exceed original equipment specifications for fit and function.

The kit brings together every wear item needed for a complete water pump service in one package: the impeller itself along with the impeller plate, seal ring, O-ring, and three impeller gaskets, so an installer is not left short a part mid-job. This version of the kit includes the impeller components only; it does not include the upper housing assembly. Sierra parts are backed by the Sierra warranty.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-3214
• Product Name: Impeller Repair Kit
• Material: Rubber (impeller)
• Weight: 0.64 pounds
• Kit Contents: 1 Impeller (Sierra 18-3056), 1 Impeller Plate (Sierra 18-3122), 1 Seal Ring (Sierra 18-2944), 1 O-Ring (Sierra 18-7420), 3 Impeller Gaskets (Sierra 18-2564, 18-2565, 18-2566)
• Number of Items: 1
• UPC: 030999315731
• Packaging: Non-retail packaging

Fitment

• MerCruiser Alpha One Generation II sterndrives
• MerCruiser Vazer sterndrives
• Serial number 0D494569 and above

Replaces (OEM)

• Chrysler/Force 46-43024A7
• Honda 19021-ZW1-003
• MerCruiser/Mariner/Mercury 47-43026T6, T7, T8, T10, T11, Q5, Q06
• Mercury 8M0100526
• GLM 12042

Frequently Asked Questions

What is included in the Sierra 18-3214 impeller repair kit? The kit contains one impeller, one impeller plate, one seal ring, one O-ring, and three impeller gaskets, giving you every wear part needed for a water pump impeller service in a single package.

Does the 18-3214 kit include the upper housing? No, the 18-3214 kit covers the impeller and its related seals and gaskets only. Sierra part 18-3147 is the same impeller kit but with the upper housing assembly included, for buyers who need that additional component.

What is the impeller made of? The impeller in the Sierra 18-3214 kit is molded from a neoprene rubber compound, chosen for flexibility and durability under repeated water pump cycling.

Which MerCruiser sterndrives does the 18-3214 kit fit? This kit fits MerCruiser Alpha One Generation II and MerCruiser Vazer sterndrives with serial number 0D494569 and above.

What OEM part numbers does Sierra 18-3214 replace? Sierra 18-3214 replaces Chrysler/Force 46-43024A7, Honda 19021-ZW1-003, MerCruiser/Mariner/Mercury 47-43026T6, T7, T8, T10, T11, Q5, Q06, Mercury 8M0100526, and GLM 12042.

How much does the 18-3214 impeller kit weigh? The Sierra 18-3214 impeller repair kit weighs 0.64 pounds.

Is the Sierra 18-3214 kit genuine or aftermarket? Sierra 18-3214 is manufactured to meet or exceed original equipment specifications and is backed by the Sierra warranty, functioning as a direct OEM-equivalent replacement rather than a generic aftermarket substitute.

How is the 18-3214 kit packaged? The Sierra 18-3214 impeller repair kit ships in non-retail packaging.

Can I use the 18-3214 impeller alone without buying the full kit? The impeller itself is Sierra part 18-3056, which is included as one of the components inside the 18-3214 kit; buyers who only need the impeller and not the gaskets, seal ring, and O-ring can reference that individual part.

Does the 18-3214 kit include new gaskets for installation? Yes, the kit includes three impeller gaskets (Sierra 18-2564, 18-2565, 18-2566) along with a seal ring and O-ring, so all sealing components are replaced along with the impeller during service.