Sierra 18-3054 Impeller, Replaces Mercury Marine 47-89980

The Sierra 18-3054 is a water pump impeller built as a direct equivalent for Mercury Marine 47-89980. It is designed for use in 4 stroke gasoline outboard engines and functions as the rotating component inside the water pump housing that drives raw water through the cooling system, protecting the powerhead from overheating. Each unit ships as a single impeller (one included per package) and is finished in black.

Sierra manufactures marine parts to equivalent fit, form, and function as the original equipment they reference, making the 18-3054 a straightforward like-for-like replacement when a water pump impeller needs to be swapped out during routine maintenance or a water pump rebuild. Replacing a worn or cracked impeller on schedule helps prevent engine overheating caused by reduced water flow, one of the most common causes of outboard cooling system failure.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-3054
• Product Type: Impeller
• Color: Black
• Engine Type: 4 Stroke
• Fuel Type: Gasoline
• Mounting Type: Transom Mount
• Weight: 0.03 pounds
• Package Dimensions: 15.24 cm L x 9.398 cm W x 5.08 cm H
• Unit Count: 1
• Included Components: Impeller
• UPC: 030999315106
• GTIN: 00030999315106
• Country of Origin: China

Fitment

Designed for Mercury Marine outboard engines that use OEM water pump impeller 47-89980.

Replaces (OEM)

• 47-89980

Frequently Asked Questions

What does the Sierra 18-3054 fit? The Sierra 18-3054 is built as an equivalent for Mercury Marine outboard engines that use OEM water pump impeller 47-89980.

Is the Sierra 18-3054 the same as Mercury Marine 47-89980? Yes, the 18-3054 is manufactured as a direct equivalent to Mercury Marine part number 47-89980 and is intended as a like-for-like replacement.

What is included when I order this part? One Sierra 18-3054 impeller ships per package; no additional water pump housing components, gaskets, or hardware are included.

What color is the Sierra 18-3054 impeller? It is black.

How much does the Sierra 18-3054 weigh? The impeller weighs 0.03 pounds.

What are the package dimensions of the Sierra 18-3054? The part ships in packaging measuring 15.24 cm long by 9.398 cm wide by 5.08 cm high.

Is this impeller genuine Sierra or aftermarket? The 18-3054 is a genuine Sierra-branded part manufactured as an OEM-equivalent replacement, not a repackaged Mercury Marine original.

What type of engine is the Sierra 18-3054 designed for? It is designed for use in 4 stroke gasoline outboard engines.

Where is the Sierra 18-3054 impeller made? This impeller's country of origin is China.

How do I know if my impeller needs replacing? Reduced raw water flow, engine overheating, or a cracked or worn impeller vane are signs that the water pump impeller, such as the Sierra 18-3054, needs to be replaced.

What is the UPC for the Sierra 18-3054? The UPC is 030999315106.