Coolant Fill Necks

Coolant Fill Necks

Coolant Fill Necks

Enhance the performance and reliability of your vehicle's cooling system with our premium selection of coolant fill necks. Engineered for compatibility and durability, our coolant fill necks ensure optimal fluid transportation and protection against leaks, making them essential for high-performance vehicles and everyday drivers alike.

Why Choose Our Coolant Fill Necks?

  • Superior Quality: Made from high-grade materials like aluminum and CNC-machined for precision, our coolant fill necks offer longevity and resist corrosion.
  • Easy Installation: Designed for a straightforward installation process, our products cater to both DIY enthusiasts and professional mechanics.
  • Diverse Applications: Whether you own a Honda Civic, Toyota GR86, Subaru BRZ, or Mitsubishi Lancer Evo X, we have the perfect filler neck to fit your needs.
  • Customization Options: Choose from various colors and finishes to match your vehicle's aesthetic, from sleek black to vibrant red or classic aluminum.

Featured Products

  • Koyo 06-11 Honda Civic Aluminum Filler Neck - FN2313
  • Koyo 2022 Toyota GR86/ Subaru BRZ Aluminum Filler Neck - FN3037
  • Mishimoto 08-15 Mitsubishi Lancer Evo X Coolant Fill Inlet - Available in Black (MMFN-EVO-BK) and Red (MMFN-EVO-RD)
  • Mishimoto 42mm Aluminum CNC Fill Neck - MMFN-L
  • Mishimoto 32mm Aluminum CNC Fill Neck - MMFN-S
  • Moroso Weld-On Filler Neck - Billet Aluminum - 63486
  • Vibrant Weld On Radiator Filler Neck - 32mm ID (1.25in) - 20980
  • Vibrant Weld On Radiator Filler Neck - 42mm ID (1.65in) - 20982

Browse our extensive collection of coolant fill necks to find the perfect fit for your vehicle, ensuring optimal engine performance and cooling efficiency. Shop now to enhance your ride!

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Photo - Primary Photo - Primary

    Vibrant Weld On Radiator Filler Neck - 42mm ID (1.65in) - 20982

    Vibrant

    MSRP: $44.99
    $38.67
    Vibrant Performance Radiator Filler Necks are CNC Machined from durable 6061 Aluminum Alloy. They include a barbed nipple for plumbing to an expansion tank. Available in two sizes and are compatible with Vibrant Performance high pressure Aluminum...
    MSRP: $44.99
    $38.67
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $44.99
    $38.67
    Subtotal:
  • Photo - Primary Photo - Primary

    Vibrant Weld On Radiator Filler Neck - 32mm ID (1.25in) - 20980

    Vibrant

    MSRP: $40.99
    $36.36
    Vibrant Performance Radiator Filler Necks are CNC Machined from durable 6061 Aluminum Alloy. They include a barbed nipple for plumbing to an expansion tank. Available in two sizes and are compatible with Vibrant Performance high pressure Aluminum...
    MSRP: $40.99
    $36.36
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $40.99
    $36.36
    Subtotal:
  • Photo - Primary Photo - Primary

    Mishimoto 32mm Aluminum CNC Fill Neck - MMFN-S

    Mishimoto

    $31.66
    If you manufacture your own aluminum radiator, the Mishimoto Aluminum Coolant Fill Neck is a must-have.The Mishimoto Aluminum Coolant Fill Necks are CNC machined and ready to be welded for use with your custom project.These Aluminum Fill Necks are...
    $31.66
    Qty in Cart: 0
    Quantity:
    Price:
    $31.66
    Subtotal:
  • Photo - Primary Photo - Primary

    Mishimoto 42mm Aluminum CNC Fill Neck - MMFN-L

    Mishimoto

    $31.66
    If you manufacture your own aluminum radiator, the Mishimoto Aluminum Coolant Fill Neck is a must-have.The Mishimoto Aluminum Coolant Fill Necks are CNC machined and ready to be welded for use with your custom project.These Aluminum Fill Necks are...
    $31.66
    Qty in Cart: 0
    Quantity:
    Price:
    $31.66
    Subtotal:
  • Photo - Primary User 1

    Mishimoto 08-15 Mitsubishi Lancer Evo X Coolant Fill Inlet - Red - MMFN-EVO-RD

    Mishimoto

    MSRP: $122.00
    $114.74
    Mishimoto has been designed for higher durability using all-aluminum construction replacement, including a replacement cap. Our product is constructed and tested to ensure fitment for the OEM hoses and Mishimoto replacement silicone hoses. It is finished...
    MSRP: $122.00
    $114.74
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $122.00
    $114.74
    Subtotal:
  • Photo - Primary User 1

    Mishimoto 08-15 Mitsubishi Lancer Evo X Coolant Fill Inlet - Black - MMFN-EVO-BK

    Mishimoto

    MSRP: $122.00
    $114.74
    Mishimoto has been designed for higher durability using all-aluminum construction replacement, including a replacement cap. Our product is constructed and tested to ensure fitment for the OEM hoses and Mishimoto replacement silicone hoses. It is finished...
    MSRP: $122.00
    $114.74
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $122.00
    $114.74
    Subtotal:
  • User 1

    Koyo 2022 Toyota GR86/ Subaru BRZ Aluminum Filler Neck - FN3037

    Koyo

    MSRP: $98.20
    $82.39
    Koyo 2022 Toyota GR86/ Subaru BRZ Aluminum Filler Neck
    MSRP: $98.20
    $82.39
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $98.20
    $82.39
    Subtotal:
  • Total: items /

Adding your products to cart