1981 Checker Marathon Performance Thermostats

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    • (0 reviews)
      # 911966746
      Checker Marathon 1981, Fail Safe Series™ Engine Coolant Thermostat by MotoRad®. Fail-Safe Thermostats offer premium, patented technology for superior protection over any thermostat on the market. Only Fail-Safe is designed to lock in...
      Exclusive, patented designHigh quality Stainless Steel and Copper construction
      $9.58 - $9.85
    • (0 reviews)
      # 911891061
      Checker Marathon 1981, High-Flow Series™ Engine Coolant Thermostat by MotoRad®. State-of-the-art equipment, strict quality control, and functional testing to each thermostat ensure customers that they can trust the high quality...
      Made of stainless steelProvide increased flow
      $6.94
    • (0 reviews)
      # 492020425
      Checker Marathon 4.4L / 5.0L 1981, Coolant Thermostat Housing by Proform®. To keep your engine cool and improve your vehicle's performance, this product is just the right solution. Manufactured from high-quality materials, it will...
      Carefully designed to improve the performance of your vehicleCrafted from first-rate materials
      $15.09 - $18.99
    • (0 reviews)
      # 906380136
      Checker Marathon 4.4L / 5.0L 1981, Officially Licensed GM Coolant Thermostat Housing by Proform®. To keep your engine cool and improve your vehicle's performance, this product is just the right solution. Manufactured from high-quality...
      Officially Licensed GM ProductsCarefully designed to improve the performance of your vehicle
      $22.83 - $23.32
    • (0 reviews)
      # mpn4468246711
      Checker Marathon 1981, 0.47" Fiber Engine Coolant Thermostat Gasket by Cometic Gasket®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $2.17
    • (0 reviews)
      # 95266466
      Checker Marathon 1981, Professional™ Engine Coolant Thermostat by ACDelco®. ACDelco has a Thermostat and Cap for most GM vehicles on the road today. Engineered to work with your car, truck or SUV, ACDelco Professional Thermostats come...
      Heavier-duty components and greater flow rates than standard-line thermostats.Designed to be OE-like.
      $2.67 - $5.89
    • (0 reviews)
      # 607552512
      Checker Marathon 1981, Economy Thermostat by Gates®. Depth from Flange: 0.78". Flange Diameter: 2.125". Height from Flange: 0.88". If you want to keep your vehicle safe on the road for many years to come, go with this Gates product....
      Great design and functionMade from sturdy materials
      $2.69 - $2.83
    • (0 reviews)
      # 607581417
      Checker Marathon 1981, Engine Coolant OE Type Thermostat by Gates®. Depth from Flange: 0.78". Flange Diameter: 2.125". Height from Flange: 0.8". If you want to keep your vehicle safe on the road for many years to come, go with this...
      Great design and functionMade from sturdy materials
      $3.18 - $3.32
    • (0 reviews)
      # 906550948
      Checker Marathon 1981, Premium Thermostat by Gates®. Depth from Flange: 0.91". Flange Diameter: 2.125". Height from Flange: 0.91". If you want to keep your vehicle safe on the road for many years to come, go with this Gates product....
      Great design and functionMade from sturdy materials
      $4.51 - $4.59
    • (0 reviews)
      # 607565500
      Checker Marathon 1981, Economy Thermostat without Check Valves and Seal by Stant®. Without Jiggle Pin. Get fast engine warm-up and dependable engine operating temperature with a Stant thermostat. Stant’s exclusive ELAC® Thermostat...
      Quality construction ensures exact fit and prolonged service life.Stainless steel bridge with channel-design for strength and rigidity.
      $1.81
    • (0 reviews)
      # 607542481
      Checker Marathon 1981, OE Type Thermostat without Gaskets, Check Valves and Seal by Stant®. Without Installation Tool and Jiggle Pin. OE Quality. Get fast engine warm-up and dependable engine operating temperature with a Stant...
      Quality construction ensures exact fit and prolonged service life.Stainless steel bridge with channel-design for strength and rigidity.
      $3.10 - $3.41
    • (0 reviews)
      # 607470228
      Checker Marathon 1981, Premium Thermostat without Check Valves and Seal by Stant®. Without Jiggle Pin. Get fast engine warm-up and dependable engine operating temperature with a Stant thermostat. Stant’s exclusive ELAC® Thermostat...
      Quality construction ensures exact fit and prolonged service life.Stainless steel bridge with channel-design for strength and rigidity.
      $4.60 - $4.65
    • (0 reviews)
      # 911972743
      Checker Marathon 1981, Economy Thermostat by MotoRad®. State-of-the-art equipment, strict quality control, and functional testing to each thermostat ensure customers that they can trust the high quality product used in their vehicle.
      Offer precise pressure controlEnsure the proper fit
      $1.37
    • (0 reviews)
      # 911934954
      Checker Marathon 1981, Engine Coolant Thermostat by MotoRad®. State-of-the-art equipment, strict quality control, and functional testing to each thermostat ensure customers that they can trust the high quality product used in their...
      Offer precise pressure controlEnsure the proper fit
      $2.43 - $2.53
    • (0 reviews)
      # 95253109
      Checker Marathon 1981, Coolant Thermostat Housing by Dorman®. Bolt Hole Diameter: 0.313". Quantity: 2 Bolt Hole. Finish: Natural. Re-engineered to address common failure points in the original equipment, Dorman’s Engine Coolant...
      Direct replacement for a proper fit every timeHoses slide on for easy installation
      $5.31 - $11.94
    • (0 reviews)
      # 911933812
      Checker Marathon 1981, Performance Thermostat by Flex-a-Lite®. Flex-a-Lite Thermostats offer professional quality for superior protection over any thermostat on the market. Keeping your engine cool is pretty important, so Flex-a-Lite...
      High qualityDurable construction
      $16.38
    • (0 reviews)
      # mpn4482322405
      Checker Marathon 5.0L 1981, Engine Coolant Water Outlet Gasket by Apex Auto®. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this highly...
      Quick accurate delivery with excellent fill-rateExcellent inventory availability
      $0.60


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