Honda Civic CR-V Acura RSX Thermostat with Housing Assembly - 1AEMX00307

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Vehicle Fit

If your car is leaking coolant around the thermostat, or your thermostat housing is broken or cracked, then this could be your solution.


  • Engine Water Outlet
  • Includes Thermostat
  • Replaces dealer part number: 19301-PNA-003, 19301PNA003
  • Direct replacement
  • Built to strict quality control standards

Over time from thermal expansion and contraction the mating surfaces on the housing can warp or crack. If you are experiencing any of these issues replace your thermostat housing with our direct replacement part.

Item Condition: New

Attention California Customers:

WARNING: Cancer and Reproductive Harm -

Lifetime Warranty

This item is backed by our limited lifetime warranty. In the event this item should fail due to manufacturing defects during intended use, we will replace the part free of charge.

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Customer Q&A
Ask a question to 1A Auto customers who purchased the product
does this thermostat come with an o-ring gasket?
Dave O July 4, 2017
Yes, this comes with a new o-ring!
Tim K July 6, 2017
Is this part OEM ?
Richy J July 27, 2019
This part is aftermarket and built to the same specs as the OE.
Andra M July 28, 2019
Year Make Model Description
2002-2006Acura RSX Acura RSX Thermostat with Housing Assembly
2002-2006Honda CR-V Honda CR-V Thermostat with Housing Assembly
2003-2005Honda Civic Honda Civic SI L4 2.0L Thermostat with Housing Assembly
Part 1AEMX00307
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Deliveries made to PO Boxes and FPO may take longer. See our Shipping & Delivery for more information.