Description
Mercury Impeller | Dometic M18-8900 | Boat Supply Store
This Dometic impeller is a critical component for maintaining the efficient operation of your Mercury raw water cooling system. Failure to replace worn impellers can lead to engine overheating, particularly during extended trolling runs or when operating in warmer Texas lake environments. Ensure optimal coolant flow by replacing your impeller according to manufacturer specifications, typically every 200 hours or two years. This unit features durable nitrile rubber vanes for superior wear resistance.
Key Features
- Ensures vital engine cooling
- Engineered for Mercury raw water pumps
- Durable nitrile rubber construction
- Maintains consistent coolant flow
- Prevents overheating and engine damage
- Designed for reliable marine performance
- Critical for routine maintenance intervals
- Direct-fit replacement for specified models
Specifications
| Product Specifications | |
|---|---|
| Brand | DOMETIC |
| Impeller Material | Nitrile Rubber |
Who This Is For
Boat owners with Mercury outboard or sterndrive engines requiring raw water pump impeller replacement. Essential for proactive maintenance to prevent critical engine overheating issues.
How It Compares
| Feature | Mercury Impeller | Dometic M18-8900 | Sierra |
|---|---|---|
| Vane Material | Nitrile Rubber | Neoprene |
| Engine Compatibility | Specific Mercury models | Specific Mercury models |
Common Concerns Answered
How often should I replace my Mercury impeller?
Routine replacement is recommended every 200 operating hours or two years, whichever comes first, to prevent catastrophic engine overheating.
Will this impeller fit my Mercury outboard?
This Dometic M18-8900 impeller is designed for specific Mercury engine models. Always verify fitment with your engine's service manual or by checking the original impeller part number.
What are the consequences of a worn impeller?
A worn impeller cannot move sufficient water, leading to reduced cooling, potential engine overheating, and severe, costly engine damage.
Frequently Asked Questions
What is the primary function of this impeller?
Its primary function is to pump raw water through your engine's cooling system, dissipating heat and preventing overheating.
What material is this impeller made from?
This impeller is constructed from durable nitrile rubber, known for its resistance to wear and petroleum products.
What is the recommended replacement interval for an impeller?
Industry standard and manufacturer recommendations typically suggest replacement every 200 operating hours or every two years, whichever occurs first.
What is the typical installation difficulty for this part?
The installation difficulty is rated as 1, indicating it is a relatively straightforward replacement procedure for a mechanically inclined boater.
Where can I find the installation manual?
A specific installation manual URL is not provided for this product, but general installation guides for Mercury raw water impellers are widely available online.
