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Four Seasons 85688 Engine Coolant Thermostat Housing
| Brand | Four Seasons 85688 |
|---|---|
| Bolt Hole Center To Bolt Hole Center | 3.57 |
| Description | Engine Coolant Components |
| Flange Thickness | 0.700 |
| Gasket Or Seal Included | Not Included |
| Inlet Port Diameter | 1.460 |
| Material | Aluminum |
| Meets / Exceeds OEM? | Yes |
| Outlet Port Diameter | 38.000 |
| Overall Height IN | 5.000 |
| Style | w/ Thermostat |
| Thermostat Included? | Included |
| Type | Integrated Thermostat Housing |
| Product line | Thermostat Housing |
| Fits | Nissan and INFINITI · 26 vehicles |
Integrated thermostat housing. Combines the housing and thermostat in one aluminum assembly.
OEM-spec replacement. Meets or exceeds original equipment requirements for a confident fit.
Thermostat included. Ready for installation with the thermostat already in place.
Cross-references BBB Industries 14778, Dorman - Conduct-Tite 85688 and Gates 33951 for the same application. See all 13.
Thermostat Housing for Nissan and INFINITI
Four Seasons Thermostat Housing 85688 is an integrated engine coolant thermostat housing built from aluminum for reliable cooling system service. It includes the thermostat and is made to meet or exceed OEM requirements for the listed Nissan and INFINITI applications.
- Integrated thermostat housing design
- Aluminum construction for cooling system durability
- Thermostat included
- Outlet port diameter: 38.000
- Inlet port diameter: 1.460
- Bolt hole center to bolt hole center: 3.57
- Flange thickness: 0.700
- Meets or exceeds OEM specifications
Product Details
This Four Seasons thermostat housing is part of the Thermostat Housing product line and is engineered as an engine coolant component for direct replacement service. Part number 85688 is an integrated thermostat housing style, which combines the housing and thermostat in one assembly for the specified applications. It cross-references Gates 33951 for the same application. Fits 2002-2006 Nissan Altima, N/A; Fits 2002-2008 Nissan Maxima, N/A; Fits 2003-2007 Nissan Murano, N/A; Fits 2004-2009 Nissan Quest, N/A; Fits 2002-2004 INFINITI I35, N/A.
Common Cooling System Issues
- Cracked or warped thermostat housing
- Coolant leaks at the housing or outlet connection
- Sticking thermostat affecting engine temperature control
- Overheating caused by restricted coolant flow
- Failed housing sealing surfaces from age and heat cycling
Installation Notes
Verify the inlet and outlet dimensions, bolt spacing, and flange thickness against the original part before installation. The gasket or seal is not included, so reuse is not recommended if the original seal shows wear or damage. Clean all mating surfaces thoroughly and follow the vehicle service procedure for coolant refill and air bleeding after installation.
Quality Assurance
Four Seasons 85688 is built to meet or exceed OEM requirements for the listed applications and is intended for direct-fit cooling system replacement on Nissan Altima, Maxima, Murano, Quest, and INFINITI I35 models.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2009 | Nissan | Quest | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2008 | Nissan | Maxima | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2008 | Nissan | Quest | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2007 | Nissan | Maxima | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2007 | Nissan | Murano | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2007 | Nissan | Quest | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2006 | Nissan | Altima | 3.5L | V6 | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2006 | Nissan | Maxima | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2006 | Nissan | Murano | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2006 | Nissan | Quest | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2005 | Nissan | Altima | 3.5L | V6 | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2005 | Nissan | Maxima | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2005 | Nissan | Murano | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2005 | Nissan | Quest | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2004 | INFINITI | I35 | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2004 | Nissan | Altima | 3.5L | V6 | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2004 | Nissan | Maxima | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2004 | Nissan | Murano | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2004 | Nissan | Quest | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2003 | INFINITI | I35 | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2003 | Nissan | Altima | 3.5L | V6 | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2003 | Nissan | Maxima | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2003 | Nissan | Murano | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2002 | INFINITI | I35 | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2002 | Nissan | Altima | 3.5L | V6 | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
| 2002 | Nissan | Maxima | — | — | N/A | Thermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing |
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