Promrmr Thermostat Housing for Kia & Hyundai 2.4L – Fits Optima (2016–2020), Santa Fe (2019–2020), Sonata (2015–2019) – Direct-Fit

Promrmr thermostat housing 25600-2GGA5 is a direct-fit replacement housing designed to regulate engine coolant flow for select Kia and Hyundai 2.4L engines.

This replacement thermostat housing is engineered to match factory fit and function for specific Kia Optima and Hyundai Santa Fe and Sonata models using the 2.4L engine. Constructed from durable materials and factory-dimensioned, it installs in the same location as the original part and accepts the OEM-style thermostat and sensors. The unit ships as a complete housing assembly so you get a ready-to-install piece that reduces downtime and helps restore proper coolant routing.

Which vehicles and part numbers is this compatible with?

This Promrmr housing is made to replace part number 25600-2GGA5 (256002GGA5) and fits the 2.4L gasoline engines used in several model years of Kia and Hyundai. Always cross-check your vehicle’s year, engine size, and OEM part number before ordering to ensure compatibility.

• Compatible models: Kia Optima 2.4L (2016–2020)
• Compatible models: Hyundai Santa Fe 2.4L (2019–2020)
• Compatible models: Hyundai Sonata 2.4L (2015–2019)
• Replaces OEM numbers: 25600-2GGA5, 256002GGA5

How does this housing improve a cooling system repair?

Replacing a worn or cracked thermostat housing restores a sealed coolant path and prevents leaks that can lead to overheating. Using a direct-fit aftermarket housing avoids modification, simplifies installation, and helps maintain correct thermostat and sensor placement.

• Prevents external coolant leaks by restoring a tight seal
• Maintains proper thermostat seating and coolant flow
• Eliminates the need for custom adapters or modifications

What materials and quality controls are used?

The Promrmr housing is manufactured from corrosion-resistant materials chosen for long service life under engine bay conditions. Each unit is inspected to verify fit dimensions and sealing surfaces so it matches the form and function of the original equipment part.

• High-grade materials resist heat and coolant exposure
• Precision-molded sealing faces for reliable gasket contact
• Quality checks ensure dimensional accuracy and durability

What comes in the package and what support is available?

Your order includes a single thermostat housing ready for installation; the listing shows the exact piece you will receive. Promrmr backs this product with a 12-month return policy and customer support to assist with fitment questions or post-purchase concerns.

• Package contents: 1 x thermostat housing (as pictured)
• 12-month no-hassle product return policy
• Responsive customer support for fitment and replacement guidance

Who is this for: This thermostat housing suits DIY mechanics, independent repair shops, and fleet maintenance teams servicing Kia Optima (2016–2020) or Hyundai Santa Fe and Sonata 2.4L models (listed years). Choose this part if you need a reliable, OEM-style replacement to correct coolant leaks, restore thermostat mounting integrity, and return the cooling system to proper operation without modifying the vehicle.