HomeBelts and Cooling > Hoses and PipesFour Seasons 86304 Engine Coolant Filler Neck
Part #: 86304

Four Seasons 86304 Engine Coolant Filler Neck

Coolant Filler Neck
⚙️ 17 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$31.39Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦Coolant Filler Neck
🚗Fitment: Hyundai and Kia, Elantra, Elantra GT, Forte, Forte5, Veloster, and Veloster N
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Engine Coolant Filler Neck for Hyundai and Kia Vehicles

The Four Seasons Coolant Filler Neck 86304 is designed to maintain proper coolant levels in your engine cooling system. Engineered without a thermostat, this coolant filler neck is compatible with select Hyundai and Kia models, ensuring a precise fit and reliable performance.

  • Compatible with Hyundai Elantra, Elantra GT, Kia Forte, Forte5, Veloster, and Veloster N
  • Part number 86304 for easy identification and ordering
  • Engine coolant filler neck designed without thermostat for specific cooling system setups
  • Durable construction to withstand engine heat and pressure
  • Part of the Four Seasons Coolant Filler Neck product line, focused on engine coolant components

Product Details and Features

This Four Seasons Coolant Filler Neck 86304 is an essential engine coolant component that connects the coolant reservoir to the radiator, allowing for proper coolant flow and pressure regulation. The design excludes a thermostat, making it suitable for vehicles that manage temperature control through other cooling system components. This part is engineered to meet the specifications required by Hyundai and Kia models such as the Elantra, Elantra GT, Forte, Forte5, Veloster, and Veloster N, ensuring compatibility and reliable operation.

The Coolant Filler Neck product line by Four Seasons specializes in components that maintain the integrity of the engine cooling system. This line focuses on providing replacement parts that fit precisely and perform consistently under typical engine operating conditions.

Common Applications and Problem Resolution

  • Replaces cracked or damaged coolant filler necks causing coolant leaks
  • Prevents coolant overflow and maintains proper coolant reservoir pressure
  • Addresses overheating issues related to coolant system pressure loss
  • Restores proper coolant flow in Hyundai Elantra and Kia Forte cooling systems
  • Eliminates coolant contamination from external debris entering through a faulty filler neck

Installation Notes and Tips

When installing the Four Seasons Coolant Filler Neck 86304, ensure the engine is cool to avoid injury from hot coolant. Verify compatibility with your specific Hyundai or Kia model before installation. Inspect surrounding hoses and clamps for wear and replace if necessary to maintain a secure and leak-free connection. Properly tighten clamps to manufacturer torque specifications to prevent leaks without damaging the filler neck.

Quality Assurance and Warranty

Four Seasons parts are manufactured to meet or exceed OEM standards for fit and function. The Coolant Filler Neck 86304 undergoes quality checks to ensure durability and performance in demanding engine environments. Please refer to Four Seasons' official warranty policy for coverage details on this engine coolant component.

BrandFour Seasons
Part Number86304
PositionCoolant Filler Neck
DescriptionEngine coolant components
StyleW/o thermostat
TypeCoolant filler neck

This part fits 17 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2021HyundaiVeloster2.0LL4N/ACoolant Filler Neck
2021HyundaiVeloster NN/ACoolant Filler Neck
2020HyundaiElantra2.0LL4N/ACoolant Filler Neck
2020HyundaiElantra GT2.0LL4N/ACoolant Filler Neck
2020HyundaiVeloster2.0LL4N/ACoolant Filler Neck
2020HyundaiVeloster NN/ACoolant Filler Neck
2020KiaForte2.0LL4N/ACoolant Filler Neck
2020KiaForte52.0LL4N/ACoolant Filler Neck
2019HyundaiElantra2.0LL4N/ACoolant Filler Neck
2019HyundaiElantra GT2.0LL4N/ACoolant Filler Neck
2019HyundaiVeloster2.0LL4N/ACoolant Filler Neck
2019HyundaiVeloster NN/ACoolant Filler Neck
2019KiaForte2.0LL4N/ACoolant Filler Neck
2018HyundaiElantra2.0LL4N/ACoolant Filler Neck
2018HyundaiElantra GT2.0LL4N/ACoolant Filler Neck
2017HyundaiElantra2.0LL4N/ACoolant Filler Neck
2017HyundaiElantra GTN/ACoolant Filler Neck

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

25329F200081713486304W98834

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.