Sierra 18-1989K Thermostat Service Kit for 18-1989 Thermostat Housing

The Sierra 18-1989K Thermostat Service Kit provides the replacement parts needed to service the 18-1989 thermostat housing on your marine engine. Rather than replacing the entire housing, this kit lets you restore proper cooling system function with fresh service components sized specifically for that housing, helping maintain correct engine operating temperature and preventing the overheating issues that come from a worn or failing thermostat setup. It is built to a universal fit, making it a straightforward option for boat owners performing routine cooling system maintenance. Sierra engineers its parts to meet or exceed the performance of the original equipment they replace, and the company supplies OEM engine manufacturers and boat builders with parts on a daily basis, so this kit is manufactured to the same standard used across the marine industry. At 0.1 pounds, it is a compact, lightweight kit that is easy to store aboard or in a parts locker until it's needed. Whether you are performing scheduled maintenance or addressing a cooling system problem, the 18-1989K gives you the correct service components matched to the 18-1989 housing without having to source individual parts separately.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-1989K
• Product Type: Thermostat Service Kit
• Compatible Housing: 18-1989 Thermostat Housing
• Fit Type: Universal Fit
• Color: White
• Weight: 0.1 pounds
• Unit Count: 1
• UPC: 808282271145

Fitment

• Fits the Sierra 18-1989 Thermostat Housing

Frequently Asked Questions

What is the Sierra 18-1989K Thermostat Service Kit for? It is a service kit for the 18-1989 thermostat housing, providing the replacement parts needed to service that housing rather than replacing the whole unit.

Will the 18-1989K fit any boat engine? The 18-1989K is listed as a universal fit kit, sized to match the 18-1989 thermostat housing rather than one specific engine model.

How much does the 18-1989K weigh? This Sierra thermostat service kit weighs 0.1 pounds.

What color is the 18-1989K kit? The kit is white.

How many units come in one 18-1989K package? One Sierra 18-1989K Thermostat Service Kit is included per unit count of 1.

Is the 18-1989K a genuine Sierra part or aftermarket? It is a genuine Sierra part, manufactured to meet or exceed the performance of the original equipment it replaces.

Does the 18-1989K come with a warranty? Yes, the Sierra 18-1989K Thermostat Service Kit is covered by a limited warranty.

What is the UPC for the Sierra 18-1989K? The UPC for the Sierra 18-1989K Thermostat Service Kit is 808282271145.

Do I need to replace the entire thermostat housing to use this kit? No, the 18-1989K is specifically a service kit designed to refresh the 18-1989 thermostat housing without replacing the full housing assembly.

Who makes the 18-1989K thermostat service kit? Sierra manufactures the 18-1989K, and the company supplies parts to OEM engine manufacturers and boat builders as part of its regular production.