Sierra Water Pump Kit 18-3688 for Mercury Outboard Motors

The Sierra Water Pump Kit 18-3688 is a complete water pump kit engineered for Mercury outboard motors, giving boat owners and marine technicians the components needed to restore the outboard's raw-water cooling system. Reliable cooling is essential to preventing overheating damage to the powerhead, and a worn or failing water pump is one of the most common causes of engine temperature problems in outboard motors. This kit is supplied as a single, ready-to-install unit, simplifying the replacement process for a routine maintenance job that most outboard owners will face over the life of the motor.

Sierra manufactures this kit to be a direct fit for the Mercury outboard application it is designed for, and it carries a 90-day manufacturer warranty for added confidence in the repair. Whether performing scheduled maintenance or responding to an overheating issue, this kit provides the parts needed to bring the cooling system back to proper working order in one package identified by part number 18-3688.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-3688
• Product Type: Water Pump Kit
• Application: Mercury outboard motors
• Unit Count: 1
• UPC: 808282386191
• Weight: 2.3 pounds
• Warranty: 90 days

Fitment

• Mercury outboard motors

Frequently Asked Questions

What motors does the Sierra 18-3688 water pump kit fit? The Sierra 18-3688 is a water pump kit designed for Mercury outboard motors.

Is this a complete water pump kit or just a single part? Part number 18-3688 is sold as a complete water pump kit, packaged as one unit rather than an individual component.

How much does the Sierra 18-3688 water pump kit weigh? This kit weighs 2.3 pounds.

Does the Sierra 18-3688 come with a warranty? Yes, the Sierra 18-3688 water pump kit is backed by a 90-day manufacturer warranty.

Is the Sierra 18-3688 a genuine Sierra part or aftermarket equivalent? 18-3688 is a Sierra-branded water pump kit, manufactured by Sierra for Mercury outboard applications.

How many of these kits come in one package? The 18-3688 water pump kit ships as a single unit count of 1 per package.

Why would I need to replace my outboard's water pump kit? A worn or failing water pump is a common cause of overheating in outboard motors, so replacing the kit, such as the Sierra 18-3688, restores proper raw-water cooling to the powerhead.

What is the UPC for the Sierra 18-3688 water pump kit? The UPC for this Sierra water pump kit is 808282386191.

Can I use this kit for routine maintenance, not just repairs? Yes, the Sierra 18-3688 water pump kit is commonly used for scheduled maintenance on Mercury outboard motors in addition to repairing a failed pump.

What part number should I order to make sure I get the right water pump kit? Order Sierra part number 18-3688 to ensure you receive this specific water pump kit for Mercury outboard motors.