Performance Thermostat Housing & Filler Necks

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    • (0 reviews)
      # sp16141
      Hex Thermostat Housing Bolt Kit by ARP®. Nobody likes water leaks. And here’s ARP’s contribution to the solution. These premium grade bolts are engineered to properly engage the manifold threads and resist loosening. They’re...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $3.52 - $19.40
    • (0 reviews)
      # sp35033
      Water Pump and Thermostat Housing Bolt Kit by ARP®. 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 surely provide excellent...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $37.27 - $40.77
    • (0 reviews)
      # mpn4491661438
      Engine Coolant Thermostat Housing 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 highly efficient replacement...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $2.93
    • (0 reviews)
      # mpn4491661278
      Engine Coolant Thermostat Housing Seal 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 highly efficient replacement...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $5.97
    • (0 reviews)
      # mpn4491662160
      Engine Coolant Thermostat Housing Seal 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 highly efficient replacement...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $5.44
    • (0 reviews)
      # sp8944
      Chrome Plated Water Neck by Spectre Performance®. Rooted in racing, Spectre Performance designs and builds every product with the same goal in mind - the best performance in the market proven on the racetrack! All products are designed...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      $15.17 - $34.78
    • (0 reviews)
      # sp101187
      Billet Aluminum Racer Water Neck with Filler Top by Canton Racing®. Includes hardware. Increase the life of your vehicle's engine by keeping your cooling system in top condition. Replace your faulty engine cooling component with this...
      High quality at an affordable priceBuilt to match your exact requirements
      $66.00 - $138.00
    • (0 reviews)
      # mpn4576936355
      O-Ring Style Water Neck by Racing Power Company®. Material: Aluminum. Finish: Chrome. To keep your engine cool and improve your vehicle's performance, this product is just the right solution. Manufactured from high-quality materials, it...
      One-of-a-kind style will help customize your autoWill deliver unparalleled levels of durability
      $17.23
    • (0 reviews)
      # mpn477870262
      Water Neck Adaptor by March Performance®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect...
      Precisely engineered for perfect fit and functionMade with a unique blend of durability and style
      $79.62
    • (0 reviews)
      # mpn477871601
      Water Neck with Polished Adaptor by March Performance®. This product by March Performance is manufactured with a unique blend of durability and performance to take your driving experience to the next level. It is an ideal upgrade for...
      Precisely engineered for perfect fit and functionMade with a unique blend of durability and style
      $62.59
    • (0 reviews)
      # 1393237548
      Thermostat Housing by CVR Performance®. This product is made of high-quality materials to serve you for years to come. Designed usig state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...
      Built to match your exact requirementsMade from premium materials to endure years of abuse
      $72.46 - $99.40
    • (0 reviews)
      # 1393394549
      Thermostat Housing by CVR Performance®. Diameter: 1-1/2". This product is made of high-quality materials to serve you for years to come. Designed usig state-of-the-art technology and with customers in mind. It will meet your needs and...
      Built to match your exact requirementsMade from premium materials to endure years of abuse
      $95.12 - $99.40
    • (0 reviews)
      # 1393266549
      Thermostat Housing by CSR Performance®. Designed with exceptional craftsmanship, this first-rate product ensures maximum results when it comes to keeping engine temperatures down. Made from sturdy materials, it provides unparalleled...
      Designed to help prevent engine overheatingMade with extreme precision and quality in mind
      $115.30 - $130.02
    • (0 reviews)
      # 1393306548
      Thermostat Housing by CSR Performance®. Designed with exceptional craftsmanship, this first-rate product ensures maximum results when it comes to keeping engine temperatures down. Made from sturdy materials, it provides unparalleled...
      High quality at an affordable priceExpertly made from premium materials
      $133.88 - $160.86
    • (0 reviews)
      # 1393300548
      Thermostat Housing by CSR Performance®. Finish: Clear. Designed with exceptional craftsmanship, this first-rate product ensures maximum results when it comes to keeping engine temperatures down. Made from sturdy materials, it provides...
      High quality at an affordable priceExpertly made from premium materials
      $54.53 - $151.19
    • (0 reviews)
      # 1216570891
      Water Neck by Mr. Gasket®. Keeping your engine cool is pretty important, so Mr. Gasket has a full line of cooling system accessories. Whether it’s a simple, plain-Jane thermostat installed where the sun don’t shine or a full-on...
      Brilliant triple-chrome platingPrevent boilovers
      $15.48 - $42.08
    • (0 reviews)
      # 1144954908
      Water Neck by Mr. Gasket®. Material: Steel. Finish: Chrome Plated. Keeping your engine cool is pretty important, so Mr. Gasket has a full line of cooling system accessories. Whether it’s a simple, plain-Jane thermostat installed...
      Brilliant triple-chrome platingPrevent boilovers
      $14.38 - $31.00
    • (0 reviews)
      # 1393394552
      Swivel Filler Neck by CSR Performance®. Designed with exceptional craftsmanship, this first-rate product ensures maximum results when it comes to keeping engine temperatures down. Made from sturdy materials, it provides unparalleled...
      High quality at an affordable priceExpertly made from premium materials
      $151.19 - $175.49
    • (0 reviews)
      # 1093849011
      Thermostat Housing by Moroso®. Material: Billet Aluminum. Inlet Size: -12 AN. 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...
      Made from 6061-T6 Billet AluminumThe housing has two -12AN female O-ring inlet ports
      $98.50
    • (0 reviews)
      # 1093860028
      Water Neck Bleeder Kit by Moroso®. 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 surely provide excellent performance and...
      High quality at an affordable priceBuilt to match your exact requirements
      $74.25 - $99.65
    • (0 reviews)
      # mpn4525219746
      Aluminum Polished Water Neck by Edelbrock®. Material: Aluminum. Finish: Polished. If you are looking for a high-quality replacement part, this product is just the ticket. It was expertly designed by professional engineers using the...
      High quality at an affordable priceBuilt to match your exact requirements
      $18.95
    • (0 reviews)
      # 1216570892
      Water Neck by Edelbrock®. If you are looking for a high-quality replacement part, this product is just the ticket. It was expertly designed by professional engineers using the state-of-the-art equipment and thoroughly tested to ensure...
      High quality at an affordable priceBuilt to match your exact requirements
      $15.95 - $33.95
    • (0 reviews)
      # 1093851988
      Water Neck by Earl's Performance®. These filler necks are CNC machined and are ready for welding. They come with a 1/4” barb overflow fitting attached
      High quality at an affordable priceBuilt to match your exact requirements
      $27.15 - $30.07
    • (0 reviews)
      # 1093742993
      Inline Thermostat Housing by Meziere Enterprises®. Performance, sophistication and durability are by no means all the benefits you'll get if you purchase this product by Meziere Enterprises. Designed to take the efficiency of your...
      Powerful and efficient designExtended service life
      $59.09
    • (0 reviews)
      # mpn358506345
      Weld-in Filler Water Neck by Meziere Enterprises®. Material: Aluminum. Performance, sophistication and durability are by no means all the benefits you'll get if you purchase this product by Meziere Enterprises. Designed to take the...
      Designed with key attention to detailSupported by outstanding technology
      $24.03
    • (0 reviews)
      # 1216570890
      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 surely provide excellent performance and...
      Carefully designed to improve the performance of your vehicleCrafted from first-rate materials
      $14.93 - $19.58
    • (0 reviews)
      # mpn2367668210
      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 surely provide excellent performance and...
      Carefully designed to improve the performance of your vehicleCrafted from first-rate materials
      $16.54
    • (0 reviews)
      # mpn1422735756
      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 surely provide excellent performance and...
      Carefully designed to improve the performance of your vehicleCrafted from first-rate materials
      $16.15
    • (0 reviews)
      # mpn1422735756
      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 surely provide excellent performance and...
      Carefully designed to improve the performance of your vehicleCrafted from first-rate materials
      $16.15
    • (0 reviews)
      # 1216570889
      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 materials, it will surely provide...
      Officially Licensed GM ProductsCarefully designed to improve the performance of your vehicle
      $22.32 - $22.45




    When you want to get maximum performance out of your hot rod beast, race rocket or street performance machine and push it to the limits, the engine is forced to work harder to pull more power, creating more excessive heat. To ensure that your vehicle's inner beast works at its peak, it's essential to efficiently cool down the engine bay. The larger the engine is, the more cooling is required to keep temperatures under control. Featuring advanced designs for optimum heat transfer, high-performance engine cooling tune-ups help bring damaging engine temperatures down which is critical for engine performance, reliability and lifespan.

    Browse our selection of top-of-the-line engine coolant water outlet necks and fillers designed to help you get the most out of your cooling system. Once attached to the thermostat, a premium grade water neck is sure to fine tune your cooling system for maximum performance. From straight, swivel and angled water necks, we've got the finest upgrades for your radiator hose locating needs or dressing up the front of your engine. Performance water necks help clear engine obstacles and allow the hose to be placed to fit to tight spaces.

    Straight water necks are a perfect solution for vehicles where engine inlet and outlet ports are in different locations. These necks allow for routing the radiator hose in the right direction for custom engine cooling applications. Swivel water necks offer greater flexibility when it comes to locating the hose. Featuring a swivel design, these necks provide various radiator hose routing options to attach it in a more convenient direction – placed parallel to the engine, or at a 15 or 45 degree angle. They include mounting bolts for flawless installation and an O-ring seal for improved sealing over paper gaskets for leak-free operation. Swivel water filler necks are available in a choice of attractive finishes, including highly polished or anodized aluminum, chrome and stainless steel that deliver sleek, sharp looks in any engine bay.

    Performance engine coolant water filler necks will come in handy if you don't have space for anything else. Filler necks gathered on our virtual shelves provide unprecedented durability and improved resistance. Designed to go inline in the radiator hose in applications where it's not part of the radiator, the filler neck provides more complete cooling system filling to effectively remove all the air out of it at all times. These necks come in billet aluminum for sharp looks and impeccable strength. Whether you're looking for water outlet necks or fillers, you've come to the right place. We handpick a wide variety of performance engine coolant water necks and fillers that will help your high-performance engine running at its peak to unlock more performance and horsepower with confidence and help overcome limited space issues. Manufactured from first-rate materials, they feature top-grade construction that can withstand extreme changes in temperatures which makes them perfect for use in racing or street applications.

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    Performance Thermostat Housing & Filler Necks Reviews

    Average rating:    5 - 16 reviews
    5 of 5
    Nice
    It looks great, looks like it's easy to install but it's not the correct one I need. I need a 15° or straight. My alternator is in the way for this one. 5 stars across the board for it even though it's my mistake.
    Posted by Daniel (Pennellville, NY) / October 19, 2018
    Was this review helpful for you? Yes
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