Dorman thermostat housing assembly 902-5140

A thermostat housing replacement is only useful if it matches the vehicle, and the listing does not name the specific applications. The Dorman 902-5140 is described as a direct replacement for select Infiniti and Nissan models.

That makes it a part to consider during a vehicle-specific cooling-system repair, rather than a universal housing chosen by appearance alone.

Picture a repair where the existing housing needs replacing: having a direct-replacement part identified for the vehicle can narrow the search, but the model details still matter.

Best use cases

This assembly is intended for replacing a thermostat housing on select Infiniti and Nissan vehicles. Its direct-replacement positioning suits buyers who already have a repair planned and are looking for a part specified for their vehicle, rather than a universal component that may require a different fit or approach.

Before choosing it, match the part number and vehicle application against reliable fitment information for the exact vehicle. The product name does not provide a year, model, engine or complete compatibility list, so the Infiniti/Nissan label alone is not enough to establish fit. Based on the listing, that missing application detail is the main point to resolve before purchase.

It may suit you if you need a replacement housing for a confirmed compatible vehicle. It is not for you if you need a confirmed fit for an unlisted application or are looking for a complete thermostat-and-housing kit: the listing names a housing assembly but does not specify included components beyond that.

Product specs

• Name: Dorman 902-5140 Engine Coolant Thermostat Housing Assembly
• Type: Engine coolant thermostat housing assembly
• Fitment: Select Infiniti and Nissan models, specific applications are not listed in the supplied details
• Replacement type: Described as a direct replacement
• Material: Described only as high-quality material, no material type is given

The listing also refers to quality-control testing and says the part is designed to fit and perform like original equipment on specific vehicles. Those are manufacturer claims, not a substitute for checking the application, and no test results or durability figures are provided. The description likewise does not state whether a thermostat, seals or other hardware are included, so don't assume they come in the box.

Where it shines

The useful distinction here is the vehicle-specific replacement approach. If the part number corresponds to your vehicle, a direct replacement can be a more relevant choice than a universal housing selected without application details. For a cooling-system repair, that can help keep the parts search focused instead of starting with a component that may not match.

The trade-off is limited detail. There is no supplied fitment chart, material specification or list of included pieces to help compare it with another replacement. The listing mentions Dorman's automotive experience and testing, but gives no independent evidence or measurable performance information. If you need to verify fit or plan the full repair, those gaps matter more than the broad claims.

Final decision

The Dorman 902-5140 is worth considering when you have confirmed that this part number is intended for your specific Infiniti or Nissan and want a direct-replacement thermostat housing assembly. It is a less straightforward choice if you're still identifying the fault, need a complete list of included parts, or cannot confirm vehicle fitment from the information available. The key buying decision isn't the general make range, it's whether the exact application matches your vehicle.