Dorman 902-837 Engine Coolant Thermostat Housing - Outer or Upper

Dorman 902-837 Thermostat Housing

Dorman 902-837 is a replacement engine coolant thermostat housing built for specified Nissan cooling system applications. It matches the original fit and durability requirements of the stock housing and is made from steel to handle repeated temperature swings in daily driving.

Compatible with 1995-2000 Nissan Sentra, outer, and 1995-1998 Nissan 200SX, upper, this thermostat housing supports proper coolant routing in the engine cooling system. The natural-finish steel construction and 90-degree neck angle help it align with the factory layout on these applications.

Key Features

• Steel construction for strength in high-heat cooling system service
• Natural finish
• 1.25 in. outlet port diameter
• 90-degree neck angle from base
• 3 mounting holes with 0.313 in. mounting hole diameter
• No gasket or seal included
• No thermostat, O-rings, bolts, or bleeder valve included
• Package contents: 1 water outlet

Detailed Description

This Dorman thermostat housing, part number 902-837, is engineered as a direct replacement for the factory engine coolant thermostat housing on select Nissan models. It is designed to match the original housing’s fit and durability while standing up to extreme temperature changes that can occur in the cooling system. For Nissan Sentra and Nissan 200SX applications, the housing helps maintain a secure coolant passage at the thermostat location.

This part cross-references Motorad CH5536 for the same application. It also aligns with common replacement references used for this fitment, including Dorman 902-837 in service and catalog searches.

What It Helps Address

• Cracked or corroded thermostat housing
• Coolant leaks at the housing connection
• Improper sealing at the thermostat outlet
• Heat-related housing distortion
• Cooling system service on Nissan Sentra and Nissan 200SX models

Installation Notes and Tips

• Verify the outlet port diameter, mounting hole count, and 90-degree neck angle before installation.
• Inspect the mating surfaces and replace any required gasket or seal separately, since none is included.
• Transfer or source the thermostat, bolts, O-rings, and other related components as needed for your repair.
• Confirm fitment by year, model, and position: Fits 1995-2000 Nissan Sentra, outer; Fits 1995-1998 Nissan 200SX, upper.

Quality Assurance

Dorman designs this replacement housing to match stock fit and durability requirements for the listed Nissan applications. The steel construction is selected to withstand repeated temperature changes in the cooling system and support long service life in normal operation.