Motorad 268-170 Engine Coolant Thermostat

OE-Style 170F Engine Coolant Thermostat

Motorad Standard 268-170 is an engine coolant thermostat built to OE specifications for steady temperature control in demanding cooling systems. It uses a copper case and wax compound for quick reaction to coolant temperature changes, with an offset design, air relief valve, and OEM-style seals where applicable.

Compatible With Nissan Frontier, Nissan Xterra, Nissan Pathfinder, Nissan Quest, Nissan Maxima, Nissan 300ZX, Nissan D21, and related INFINITI and Mercury applications listed below, this thermostat supports accurate warm-up and stable operating temperature. The Motorad 268-170 is a direct-fit service part for vehicles that call for a 170 degree thermostat.

Key Features

• 170 degree Fahrenheit start-to-open temperature
• Standard thermostat design for OE-style cooling system service
• Copper case and wax compound for responsive temperature control
• Jiggle pin weep hole for air relief during filling and service
• Offset design with OEM-style seals where applicable
• Sealing flange outside diameter: 2.52 in.
• Height between flanges: 1.75 in.; overall height: 2.5 in.
• Bypass diameter: 0.98 in.; bypass length: 1.88 in.
• Flange thickness: 0.05 in.

Product Details

Motorad Standard focuses on OE-spec cooling system service parts, and this thermostat follows OEM-quality materials and manufacturing processes. The 268-170 is engineered for vehicles that require a 170F thermostat, including Nissan Frontier, Nissan Xterra, Nissan Pathfinder, Nissan Quest, and select INFINITI models. This part cross-references Standard Ignition 26870 and Stant 45947 for the same application.

What It Helps Address

• Engine running hotter than normal due to a worn thermostat
• Slow warm-up after cold starts
• Temperature swings caused by inconsistent thermostat response
• Cooling system air pockets during refill or service
• Replacement needs on OE-specified 170F applications

Installation Notes

• Use silicone sealant where specified by the vehicle application notes.
• Verify the cooling system is clean before installation.
• Confirm the 170F temperature requirement before replacing the thermostat.
• Bleed trapped air from the system after service to help maintain stable coolant flow.
• Follow the factory service procedure for the specific Nissan, INFINITI, or Mercury application.

Quality Assurance

Manufactured by an OE supplier using OEM-quality materials and safety standards, this thermostat is built to meet the demands of modern cooling systems. It is produced to OEM specifications and processes for consistent fit and temperature control.

Fits 1999-2004 Nissan Frontier, N/A; Fits 2002-2004 Nissan Xterra, N/A; Fits 1993-2002 Nissan Quest, N/A; Fits 1987-2000 Nissan Pathfinder, N/A; Fits 1985-1994 Nissan Maxima, N/A; Fits 1987-1996 Nissan 300ZX, N/A; Fits 1986-1994 Nissan D21, N/A.