Sierra Impeller Kit - SIE-18-3214

Sierra 18-3214 Impeller Kit for Mercury

Restore proper water pump function with the Sierra 18-3214 impeller kit for MerCruiser Alpha One Gen II systems (D494569 and above). Featuring rubber vanes around a metal hub, this impeller resists wear from heat and sand, making it ideal for demanding marine use. Compatible with Mercury Marine, Honda, and Chrysler/Force engines, it meets or exceeds OEM specs and serves as a direct replacement for part #8M0100527. Simple to install and priced competitively, it’s a reliable solution when you notice signs of wear like knocking or overheating during pump operation.

For Use On Alpha I Gen II, BF70, And BF90 S/N D494569 & Above.

Sierra Impeller Kit Includes:

(1) 18-2564 Water Pump Base to Face Plate Gasket

(1) 18-2565 Water Pump Base to Gear Housing Gasket

(1) 18-2566 Face Plate to Water Pump Cover Gasket

(1) 18-2944 Seal Ring

(1) 18-3056 Impeller

(1) 18-3122 Impeller Plate

(2) 18-7420 O-Ring

Sierra Impeller Kit is Interchangeable with:

Mercury Marine

47-43026T11

47-43026T8

47-43026T6

47-43026T7

47-43026T10

47-43026Q5

47-43026Q06

47-8M0100526

47-43026T9

Mallory

9-48313

GLM

12042

Honda Outboard

19021-ZW1-003

Pro Marine

3214

Redline

RL3214

Frequently Asked Questions

• What is the Sierra 18-3214 Impeller Kit for Mercury used for? The Sierra 18-3214 Impeller Kit is designed to restore proper water pump function on compatible marine systems. The impeller features rubber vanes around a metal hub and is designed to resist wear from heat and sand during demanding marine use. It serves as a direct replacement for Mercury Marine part number 8M0100527.
• What applications does the Sierra 18-3214 Impeller Kit fit? The Sierra 18-3214 Impeller Kit is specified for Alpha I Gen II, BF70, and BF90 applications with serial number D494569 and above. The description also identifies compatibility with Mercury Marine, Honda, and Chrysler/Force engines. Verify the engine application and serial number before purchasing or installing the kit.
• What parts are included in the Sierra 18-3214 Impeller Kit? The kit includes one 18-2564 water pump base to face plate gasket, one 18-2565 water pump base to gear housing gasket, one 18-2566 face plate to water pump cover gasket, one 18-2944 seal ring, one 18-3056 impeller, one 18-3122 impeller plate, and two 18-7420 O-rings.
• What Mercury Marine part does the Sierra 18-3214 Impeller Kit replace? The Sierra 18-3214 Impeller Kit is listed as a direct replacement for Mercury Marine part number 8M0100527. It is also interchangeable with several Mercury Marine numbers, including 47-43026T11, 47-43026T8, 47-43026T6, 47-43026T7, 47-43026T10, 47-43026Q5, 47-43026Q06, 47-8M0100526, and 47-43026T9.
• What other part numbers are interchangeable with the Sierra 18-3214 Impeller Kit? The Sierra 18-3214 is interchangeable with Mallory 9-48313, GLM 12042, Honda Outboard 19021-ZW1-003, Pro Marine 3214, and Redline RL3214. Mercury Marine interchange numbers are also listed for this kit. Confirm the existing part number and application before using an interchangeable part number for fitment.
• What should I verify before installing the Sierra 18-3214 Impeller Kit? Before installation, verify that the application is Alpha I Gen II, BF70, or BF90 and that the serial number is D494569 or above. The description identifies the kit as a replacement water pump impeller kit, but it does not provide detailed installation steps. Follow the product label and applicable equipment owner’s manual for the installation procedure.