Radiator Caps

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    • (0 reviews)
      # mpn4488050356
      GM Original Equipment™ Engine Coolant Radiator Cap (30020692) by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $17.63
    • (0 reviews)
      # mpn869381256
      GM Original Equipment™ Engine Coolant Radiator Cap with Yellow Lettering by ACDelco®. Pressure: 15 lbs. Material: Plastic Covered Stainless Steel. Designed utilizing the latest technology, this product by ACDelco features premium...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $9.45
    • (1 review)
      # mpn869381246
      GM Original Equipment™ Engine Coolant Radiator Cap (RC85) by ACDelco®. Pressure: 15 lbs. Material: Plastic Covered Stainless Steel. Designed utilizing the latest technology, this product by ACDelco features premium quality and will...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $8.79
    • (2 reviews)
      # mpn869381233
      GM Original Equipment™ Engine Coolant Radiator Cap with Dual O-Ring (RC98) by ACDelco®. Pressure: 15 lbs. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $9.11
    • (0 reviews)
      # mpn869381249
      GM Original Equipment™ Engine Coolant Radiator Cap (RC112) by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $12.77
    • (0 reviews)
      # mpn869381254
      GM Original Equipment™ Engine Coolant Radiator Cap by ACDelco®. Pressure: 17 lbs. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $8.53
    • (0 reviews)
      # mpn869357034
      GM Original Equipment™ Engine Coolant Radiator Cap with Orange Lettering (15982188) by ACDelco®. Pressure: 15 lbs. Material: Plastic Covered Stainless Steel. Designed utilizing the latest technology, this product by ACDelco features...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $9.67
    • (0 reviews)
      # mpn869377484
      GM Original Equipment™ Engine Coolant Radiator Cap by ACDelco®. Pressure: 15 lbs. Material: Plastic Covered Stainless Steel. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $17.60
    • (0 reviews)
      # mpn869381236
      GM Original Equipment™ Engine Coolant Radiator Cap (RC111) by ACDelco®. Pressure: 18 lbs. Material: Plastic Covered Stainless Steel. Designed utilizing the latest technology, this product by ACDelco features premium quality and will...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $10.38
    • (0 reviews)
      # mpn4488050543
      GM Original Equipment™ Engine Coolant Radiator Cap by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle and...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $18.97
    • (0 reviews)
      # mpn869381255
      GM Original Equipment™ Engine Coolant Radiator Cap by ACDelco®. Pressure: 15 lbs. Material: Plastic Covered Stainless Steel. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $10.57
    • (0 reviews)
      # mpn869381248
      GM Original Equipment™ Engine Coolant Radiator Cap (RC32) by ACDelco®. Pressure: 9 lbs. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $8.53
    • (0 reviews)
      # mpn869381241
      GM Original Equipment™ Engine Coolant Radiator Cap (RC115) by ACDelco®. Pressure: 20 lbs. Material: Plastic Covered Stainless Steel. Designed utilizing the latest technology, this product by ACDelco features premium quality and will...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $9.11
    • (0 reviews)
      # mpn869381237
      GM Original Equipment™ Engine Coolant Radiator Cap with Dex-Cool Label (RC96) by ACDelco®. Pressure: 15 lbs. Material: Stainless Steel. Designed utilizing the latest technology, this product by ACDelco features premium quality and...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $9.43
    • (0 reviews)
      # mpn2009337162
      Engine Coolant Safety Lever Radiator Cap by MotoRad®. Pressure: 4 lbs. MotoRad radiator caps are designed and manufactured to offer precise control for the automotive cooling system. MotoRad safety lever radiator caps utilize a lever...
      Offer precise pressure controlEnsure the proper fit
      $3.79
    • (0 reviews)
      # mpn2009337106
      Engine Coolant Safety Lever Radiator Cap (ST16) by MotoRad®. Pressure: 16 lbs. MotoRad radiator caps are designed and manufactured to offer precise control for the automotive cooling system. MotoRad safety lever radiator caps utilize a...
      Offer precise pressure controlEnsure the proper fit
      $3.11
    • (0 reviews)
      # mpn2009331434
      Engine Coolant Safety Lever Radiator Cap (ST18) by MotoRad®. Pressure: 18 lbs. MotoRad radiator caps are designed and manufactured to offer precise control for the automotive cooling system. MotoRad safety lever radiator caps utilize a...
      Offer precise pressure controlEnsure the proper fit
      $3.07
    • (0 reviews)
      # mpn2009337047
      Engine Coolant Safety Lever Radiator Cap (ST37) by MotoRad®. Pressure: 16 lbs. MotoRad radiator caps are designed and manufactured to offer precise control for the automotive cooling system. MotoRad safety lever radiator caps utilize a...
      Offer precise pressure controlEnsure the proper fit
      $6.09
    • (0 reviews)
      # mpn2009336867
      Engine Coolant Safety Lever Radiator Cap by MotoRad®. Pressure: 20 lbs. MotoRad radiator caps are designed and manufactured to offer precise control for the automotive cooling system. MotoRad safety lever radiator caps utilize a lever...
      Offer precise pressure controlEnsure the proper fit
      $3.05
    • (0 reviews)
      # mpn2009337124
      Engine Coolant Safety Lever Radiator Cap (ST36) by MotoRad®. Pressure: 13 lbs. MotoRad radiator caps are designed and manufactured to offer precise control for the automotive cooling system. MotoRad safety lever radiator caps utilize a...
      Offer precise pressure controlEnsure the proper fit
      $6.12
    • (0 reviews)
      # mpn2009336866
      Engine Coolant Safety Lever Radiator Cap by MotoRad®. Pressure: 9 lbs. MotoRad radiator caps are designed and manufactured to offer precise control for the automotive cooling system. MotoRad safety lever radiator caps utilize a lever...
      Offer precise pressure controlEnsure the proper fit
      $3.20
    • (0 reviews)
      # mpn823292511
      Engine Coolant Safety Lever Radiator Cap by MotoRad®. Pressure: 13 lbs. MotoRad radiator caps are designed and manufactured to offer precise control for the automotive cooling system. MotoRad safety lever radiator caps utilize a lever...
      Offer precise pressure controlEnsure the proper fit
      $3.80
    • (1 review)
      # mpn2009337062
      Engine Coolant Safety Lever Radiator Cap (ST16R) by MotoRad®. Location: on Upper Hose. Pressure: 16 lbs. MotoRad radiator caps are designed and manufactured to offer precise control for the automotive cooling system. MotoRad safety...
      Offer precise pressure controlEnsure the proper fit
      $3.94
    • (0 reviews)
      # mpn2009337145
      Engine Coolant Safety Lever Radiator Cap (ST7) by MotoRad®. Pressure: 7 lbs. MotoRad radiator caps are designed and manufactured to offer precise control for the automotive cooling system. MotoRad safety lever radiator caps utilize a...
      Offer precise pressure controlEnsure the proper fit
      $3.59
    • (0 reviews)
      # mpn2009337107
      Engine Coolant Safety Lever Radiator Cap (ST13) by MotoRad®. Pressure: 13 lbs. MotoRad radiator caps are designed and manufactured to offer precise control for the automotive cooling system. MotoRad safety lever radiator caps utilize a...
      Offer precise pressure controlEnsure the proper fit
      $2.94
    • (0 reviews)
      # mpn1461795245
      Engine Coolant Radiator Cap by OPGI®. Pressure: 15 lbs. This superior product is painstakingly designed to provide outstanding quality and value. Expertly crafted from first-rate materials to the highest standards it ensures maximum...
      Made from first-rate materialsDesigned to comply with high-quality standards
      $19.92
    • (0 reviews)
      # mpn1461799453
      Engine Coolant Radiator Cap (S230179) by OPGI®. Pressure: 15 lbs. This superior product is painstakingly designed to provide outstanding quality and value. Expertly crafted from first-rate materials to the highest standards it ensures...
      Made from first-rate materialsDesigned to comply with high-quality standards
      $79.29
    • (0 reviews)
      # mpn1461798834
      Engine Coolant Radiator Cap (PP00246) by OPGI®. Pressure: 13 lbs. This superior product is painstakingly designed to provide outstanding quality and value. Expertly crafted from first-rate materials to the highest standards it ensures...
      Made from first-rate materialsDesigned to comply with high-quality standards
      $39.63
    • (0 reviews)
      # mpn1461798914
      Engine Coolant Radiator Cap by OPGI®. Pressure: 15 lbs. This superior product is painstakingly designed to provide outstanding quality and value. Expertly crafted from first-rate materials to the highest standards it ensures maximum...
      Made from first-rate materialsDesigned to comply with high-quality standards
      $60.79
    • (0 reviews)
      # mpn1461799455
      Engine Coolant Radiator Cap by OPGI®. Pressure: 15 lbs. This superior product is painstakingly designed to provide outstanding quality and value. Expertly crafted from first-rate materials to the highest standards it ensures maximum...
      Made from first-rate materialsDesigned to comply with high-quality standards
      $79.12
    • (0 reviews)
      # mpn1461799451
      Engine Coolant Radiator Cap by OPGI®. Pressure: 15 lbs. This superior product is painstakingly designed to provide outstanding quality and value. Expertly crafted from first-rate materials to the highest standards it ensures maximum...
      Made from first-rate materialsDesigned to comply with high-quality standards
      $64.75
    • (0 reviews)
      # mpn869340680
      Professional™ Engine Coolant Radiator Cap (12R5) by ACDelco®. Pressure: 13 lbs. Material: Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps offer customers an ideal...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $4.30
    • (0 reviews)
      # mpn4476397987
      Professional™ Engine Coolant Radiator Cap (12R6S) by ACDelco®. Pressure: 13 lbs. Material: Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps offer customers an ideal...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $6.74
    • (0 reviews)
      # mpn869340689
      Professional™ Engine Coolant Radiator Cap (12R8S) by ACDelco®. Location: on Upper Hose. Pressure: 16 lbs. Material: Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps offer...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $5.80
    • (0 reviews)
      # mpn869340721
      Professional™ Engine Coolant Radiator Cap (12R27) by ACDelco®. Pressure: 15 lbs. Material: Plastic Covered Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps offer...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $7.17
    • (0 reviews)
      # mpn869340706
      Professional™ Engine Coolant Radiator Cap (12R10S) by ACDelco®. Location: on Upper Hose. Pressure: 18 lbs. Material: Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $4.15
    • (1 review)
      # mpn869340679
      Professional™ Engine Coolant Radiator Cap (12R5S) by ACDelco®. Pressure: 13 lbs. Material: Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps offer customers an ideal...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $5.46
    • (0 reviews)
      # mpn869381242
      Professional™ Engine Coolant Radiator Cap (RC94) by ACDelco®. Pressure: 18 lbs. Material: Plastic Covered Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps offer customers...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $5.81
    • (0 reviews)
      # mpn869340687
      Professional™ Engine Coolant Radiator Cap (12R18) by ACDelco®. Pressure: 13 lbs. Material: Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps offer customers an ideal...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $7.44
    • (0 reviews)
      # mpn869340691
      Professional™ Engine Coolant Radiator Cap (12R19) by ACDelco®. Location: on Radiator. Pressure: 16 lbs. Material: Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps offer...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $7.54
    • (0 reviews)
      # mpn4476398065
      Professional™ Engine Coolant Radiator Cap (12R22) by ACDelco®. Pressure: 4 lbs. Material: Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps offer customers an ideal...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $4.11
    • (0 reviews)
      # mpn869381238
      Professional™ Engine Coolant Radiator Cap with Turning Ears and without Dex-Cool Label (RC27) by ACDelco®. Pressure: 15 lbs. Material: Plastic Covered Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $5.67
    • (0 reviews)
      # mpn869340690
      Professional™ Engine Coolant Radiator Cap (12R8) by ACDelco®. Location: on Upper Hose. Pressure: 16 lbs. Material: Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps offer...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $7.44
    • (0 reviews)
      # mpn869381239
      Professional™ Engine Coolant Radiator Cap with Pink Label and without Turning Ears (RC81) by ACDelco®. Pressure: 15 lbs. Material: Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional®...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $7.64
    • (0 reviews)
      # mpn869340693
      Professional™ Engine Coolant Radiator Cap (12R32) by ACDelco®. Pressure: 7 lbs. Material: Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps offer customers an ideal...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $4.26
    • (0 reviews)
      # mpn869381244
      Professional™ Engine Coolant Radiator Cap (RC26) by ACDelco®. Pressure: 18 lbs. Material: Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps offer customers an ideal...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $10.92
    • (0 reviews)
      # mpn869340688
      Professional™ Engine Coolant Radiator Cap (12R6) by ACDelco®. Pressure: 13 lbs. Material: Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps offer customers an ideal...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $7.44
    • (0 reviews)
      # mpn869340707
      Professional™ Engine Coolant Radiator Cap (12R10) by ACDelco®. Location: on Upper Hose. Pressure: 18 lbs. Material: Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps offer...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $3.98
    • (0 reviews)
      # mpn869340683
      Professional™ Engine Coolant Radiator Cap (12R9S) by ACDelco®. Pressure: 16 lbs. Material: Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps offer customers an ideal...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $5.96
    • (0 reviews)
      # mpn869340682
      Professional™ Engine Coolant Radiator Cap (12R7) by ACDelco®. Pressure: 16 lbs. Material: Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps offer customers an ideal...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $4.24
    • (0 reviews)
      # mpn869340684
      Professional™ Engine Coolant Radiator Cap (12R9) by ACDelco®. Pressure: 16 lbs. Material: Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps offer customers an ideal...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $4.27
    • (0 reviews)
      # mpn869340681
      Professional™ Engine Coolant Radiator Cap (12R7S) by ACDelco®. Pressure: 16 lbs. Material: Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps offer customers an ideal...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $6.01
    • (0 reviews)
      # mpn869381245
      Professional™ Engine Coolant Radiator Cap with Turning Ears (RC6) by ACDelco®. Pressure: 13 lbs. Material: Stainless Steel. With a full range of part numbers to fit most GM vehicles, ACDelco Professional® Radiator Caps offer...
      Lets you release the pressure prior to taking off the capDesigned to be OE-like
      $8.36
    • (0 reviews)
      # mpn4488050458
      Engine Coolant Radiator Cap by Dorman®. Pressure: 16 lbs. Material: Steel. Finish: Natural. Dorman® offers a variety of Radiator Caps for a range of applications. All Dorman's Engine Coolant Recovery Tank Caps are constructed of...
      Save time, money and labor by replacing only the Cap—instead of the entire Engine Coolant Recovery TankDirect replacement for a proper fit every time
      $9.81
    • (0 reviews)
      # mpn4488050416
      Engine Coolant Recovery Tank Cap with Turning Ears (54217) by Dorman®. Pressure: 5 lbs. Material: Plastic. Finish: Black. Dorman® offers a variety of Engine Coolant Recovery Tank Caps for a range of applications. All the Engine Coolant...
      Save time, money and labor by replacing only the Cap instead of the entire Engine Coolant Recovery TankDirect replacement for a proper fit every time
      $8.98
    • (0 reviews)
      # mpn2009337108
      Engine Coolant Radiator Cap (T13) by MotoRad®. Pressure: 13 lbs. MotoRad radiator caps are designed and manufactured to offer precise control for the automotive cooling system.
      Offer precise pressure controlEnsure the proper fit
      $2.28
    • (0 reviews)
      # mpn2009336861
      Engine Coolant Radiator Cap (T9) by MotoRad®. Pressure: 9 lbs. MotoRad radiator caps are designed and manufactured to offer precise control for the automotive cooling system.
      Offer precise pressure controlEnsure the proper fit
      $1.99
    • (0 reviews)
      # mpn2009331433
      Engine Coolant Radiator Cap (T18) by MotoRad®. Pressure: 18 lbs. MotoRad radiator caps are designed and manufactured to offer precise control for the automotive cooling system.
      Offer precise pressure controlEnsure the proper fit
      $2.02
    • (0 reviews)
      # mpn2009337123
      Engine Coolant Radiator Cap by MotoRad®. Pressure: 13 lbs. MotoRad radiator caps are designed and manufactured to offer precise control for the automotive cooling system.
      Offer precise pressure controlEnsure the proper fit
      $4.21
    • (0 reviews)
      # mpn2009336862
      Engine Coolant Radiator Cap by MotoRad®. Pressure: 4 lbs. MotoRad radiator caps are designed and manufactured to offer precise control for the automotive cooling system.
      Offer precise pressure controlEnsure the proper fit
      $2.48




    When the coolant level in your vehicle’s radiator gets too low, it requires to be refilled. That’s why a cap on top of a radiator is always easily accessible, allowing the driver to add coolant whenever needed. Another function of the radiator cap is to vent the pressure that accumulates inside the radiator due to the high temperatures of coolant fluid. Usually most radiator caps feature a spring-loaded plunder in the cap that redirects the coolant to the overflow reservoir when the highest point of pressure is reached. As the pressure and heat drops back to normal, the cap valve shuts down while the coolant in the overflow tank returns back into the cooling system.

    Why should you replace the radiator cap, if during servicing the cooling system you have noticed that it looks damaged? A faulty cap can cause your vehicle to overheat prematurely in cool weather. Replacing the cap is less expensive than replacing the radiator itself. We carry a broad line of replacement radiator caps that come in a variety of pressure options, including a selection of high pressure radiator caps designed specifically for high-performance vehicles. The replacement parts offered in our store boast unrivaled quality, exact fit, and affordable price tags.

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    Radiator Caps Reviews

    Average rating:    5 - 5 reviews
    5 of 5
    Good
    Great quality.
    Posted by Walter (Bay Shore, NY) / February 28, 20182008 Subaru Outback
    Was this review helpful for you? Yes
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