SIERRA Mercury/Mariner 3.9-9.8 HP Water Pump Impeller – 18-3039

Description

SIERRA Mercury/Mariner 3.9-9.8 HP Water Pump Impeller – 18-3039

Water-pump impeller for Mercury/Mariner 3.9-9.8 HP outboards using OEM 47-89981; fitment is shaft/serial dependent and excludes some 5 HP applications. Sierra designs the replacement around the specified OEM pump geometry and interchange references.

• Application: Mercury/Mariner 3.9-9.8 HP outboards using OEM 47-89981; fitment is shaft/serial dependent and excludes some 5 HP applications
• Function: Circulates raw cooling water through the engine cooling system; a worn, hardened or damaged impeller can reduce water flow and cause overheating.
• Component: Flexible water-pump impeller
• Blade count: 6
• Interchange: Mercury Marine: 47-89981, 47-89981Q1, 47-89981T1, 47-89981T2; GLM: 12270, 89810; Mallory: 9-45305

Verify the engine model, serial range, pump housing and original impeller number before installation. Inspect the housing, wear plate, key and gaskets at the same time; replace damaged companion parts rather than installing a new impeller into a worn pump.

Specifications

• Component: Flexible water-pump impeller
• Blade count: 6
• Shaft fitment: Approx. 0.456 in. shaft on documented applications
• Material: Neoprene with brass hub

Interchange / Replaces

• Mercury Marine: 47-89981, 47-89981Q1, 47-89981T1, 47-89981T2
• GLM: 12270, 89810
• Mallory: 9-45305

Related Products

• Upsell / complete repair: SIE-18-3239 | SIE-18-3446
• Relationship notes: 18-3239 and 18-3446 are stocked Sierra pump kits associated with this impeller/application family.