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Thermostat-198 Degrees w/ Seal

Manufactured with OEM quality materials and safety standards by an OE Supplier. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant.


  • Meets or exceeds OEM standards
  • Original equipment design for worry-free direct fit replacement
  • High grade stainless steel and copper construction
  • Consistent and precise response to cooling system needs
  • 100% tested and calibrated
  • Bypass Plate Diameter: 1.02 in
  • Bypass Plate Diameter (in): 1.02
  • Flange Diameter (With Seal): 1.42 in
  • Flange Diameter (With Seal) (in): 1.42
  • Flange Diameter (Without Seal): 1.42 in
  • Flange Diameter (Without Seal) (in): 1.42
  • Freight Class: 70
  • Height from Flange to Bottom: 0.75 in
  • Height from Flange to Bottom (in): 0.75
  • Gasket Or Seal Included: Yes
  • Height Between Flanges: 0.75 in
  • Jiggle Pin Weep Hole: Yes
  • Seal Type: O-Ring
  • Sealing Flange Outside Diameter: 1.42 in
  • Start to Open Temperature: 125.0 Deg. F
  • Type: Standard
Year Make Model Engine
  • 21210AA190
  • 15431
  • 21210AA191