Sierra Impeller Kit 18-3276-1, Replaces Volvo Penta 21213660

The Sierra Impeller Kit 18-3276-1 is a water pump impeller kit engineered for Volvo Penta marine engines. The impeller compound is formulated based on the size and application of the pump it serves, and the remaining kit components are constructed to meet or exceed original equipment manufacturer specifications, giving boat owners a reliable replacement option when a water pump impeller wears out or fails. Impellers are a wear item that should be inspected and replaced on a regular service interval, since a cracked, worn, or brittle impeller can restrict raw water flow to the engine and lead to overheating. This kit is assembled to Sierra's quality standards and packaged as a complete kit rather than a standalone impeller, so the components needed for a proper water pump service are included together. It is intended for Volvo Penta applications and cross-references directly to Volvo Penta OEM part number 21213660, making it a straightforward replacement for that OE number.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-3276-1
• Included Components: Impeller Kit
• Unit Count: 1
• Country of Origin: Italy
• Package Dimensions: 11.2 cm H x 6.6 cm L x 6.9 cm W
• Weight: 0.28 pounds
• UPC: 808282292218
• Category: Volvo Penta Water Pumps & Impellers

Fitment

• Volvo Penta

Replaces (OEM)

• 21213660

Frequently Asked Questions

What does the Sierra 18-3276-1 impeller kit fit? The Sierra 18-3276-1 is designed for Volvo Penta marine engine water pumps and cross-references directly to Volvo Penta OEM part number 21213660.

Is 18-3276-1 the same as Volvo Penta part 21213660? Yes, Sierra impeller kit 18-3276-1 replaces Volvo Penta OEM part number 21213660.

What is included in the 18-3276-1 kit? This kit includes the impeller along with the other components needed to complete a water pump impeller service, packaged together as a single unit count kit.

How much does this impeller kit weigh? The Sierra 18-3276-1 impeller kit weighs 0.28 pounds.

What are the package dimensions of the 18-3276-1 kit? The kit ships in packaging measuring 11.2 cm H x 6.6 cm L x 6.9 cm W.

Where is the Sierra 18-3276-1 impeller kit made? The country of origin for this impeller kit is Italy.

Why does the impeller need to be replaced periodically? A water pump impeller like the one in kit 18-3276-1 wears over time, and a worn, cracked, or brittle impeller can restrict raw water flow and cause engine overheating, so periodic replacement is recommended as part of routine maintenance.

Is the Sierra impeller compound the same for every application? No, Sierra formulates the impeller compound in the 18-3276-1 kit based on the specific size and application of the water pump it is designed for.

Are the components in this kit built to OEM standards? Yes, the components in the Sierra 18-3276-1 kit are constructed to meet or exceed original equipment manufacturer specifications.

What is the UPC for the Sierra 18-3276-1 impeller kit? The UPC for this Volvo Penta impeller kit is 808282292218.

Does this kit work for outboard, inboard, and sterndrive engines? Sierra offers impeller kits across outboard, inboard, and sterndrive applications, and the 18-3276-1 kit is the version designated for Volvo Penta engines with OEM equivalent 21213660.