eeaee Full-Aluminum Thermostat Housing Assembly for Chevy Cruze & Sonic 1.8L (2011–2018) — OEM 221°F Thermostat, Direct-Fit

eeaee's full-aluminum thermostat housing assembly replaces the factory plastic unit for Chevy Cruze and Sonic 1.8L engines, delivering a tougher, leak-resistant cooling junction with an OEM-spec thermostat (221°F/105°C).

Designed as a direct-fit replacement for multiple OE part numbers (including 25199824, 25192228, 55564890 and others), this assembly swaps the fragile plastic housing for a corrosion-resistant aluminum body and a precision thermostat. It restores reliable coolant routing and simplifies installation with matching mounting points and passages, while the built-in thermostat follows the original temperature rating to manage engine warm-up and cooling cycles.

Will this housing fit my Cruze or Sonic model?

Yes — the eeaee assembly is engineered to match factory dimensions and mounting locations for a range of 1.8L Chevy Cruze and Sonic models from model years listed. It is compatible with LS, LT, LTZ trims, and both flex-fuel and gasoline variants when specified by OEM cross-references.

• Compatible vehicles: Chevy Cruze (2011–2016) and Chevrolet Sonic (2013–2018) with 1.8L engines.
• OEM reference numbers covered: 25199824, 25192228, 55564890, 55577284, 55579951, 96984103, and related aliases.
• Designed to replace original plastic housings without modification.

How does an all-aluminum housing improve durability?

Aluminum resists the heat-related warping and stress-cracking that commonly affect plastic housings, especially under repeated thermal cycling. The upgraded material reduces the chance of gasket failure and coolant leakage, helping the cooling system remain sealed and stable over time.

• Stronger material withstands higher temperature fluctuations and vibration.
• Reduced chance of deformation or hairline cracks that cause leaks.
• Longer service life compared with stock plastic housings.

What thermostat specification is included and why does it matter?

The unit ships with an OEM-spec thermostat rated at 221°F (105°C), matching factory-controlled opening temperature to maintain the expected operating range. Using the correct setpoint helps the engine reach and hold its designed operating temperature, assisting consistent heater and cooling performance without altering factory behavior.

• Thermostat opening temperature: 221°F / 105°C.
• Pre-installed for convenience — no separate thermostat purchase required.
• Meets or exceeds original durability expectations for routine service life.

How straightforward is installation and what support is provided?

This housing is manufactured to OE fitment, keeping bolt patterns and coolant passages aligned for plug-and-play replacement. It includes a one-year warranty and access to customer support if you encounter fitment or quality issues after purchase.

• Direct OE replacement: uses factory mounting points and seals.
• One-year warranty and support from eeaee for peace of mind.
• Installation typically requires standard hand tools and a coolant drain/re-fill.

Who is this for: This eeaee aluminum thermostat housing assembly is aimed at owners and technicians restoring or upgrading the cooling system on Chevrolet Cruze and Sonic 1.8L engines who want a longer-lasting alternative to plastic housings. It’s appropriate for drivers experiencing leaks, cracked housings, or those replacing the thermostat during scheduled maintenance and seeking a durable, direct-fit replacement that uses original temperature specifications.