Direct replacement coolant expansion tank designed for 16–21 Civic models. Hard panel construction holds coolant level stable and prevents air pockets in your cooling system. Mounts at factory attachment points—no drilling or modifications required.
Can I reuse my old coolant when I swap in the new tank?
Yes—if your current coolant is fresh and at the correct concentration, drain it into a clean container before removing the old tank. Flush the system lines first to clear any sediment, then refill with your existing coolant or fresh Honda coolant as needed.
Do I need any extra hardware to install this?
Installation uses factory mounting points, so you're working with OEM hardware already on your car. Have a drain pan, basic hand tools, and a new coolant cap gasket on hand—most kits don't include the gasket, so grab one separately.
What if the tank cracks after I install it?
Test-fit the tank dry before adding coolant to catch any shipping damage. If it fails under normal use, contact our support team with photos—we handle replacements quickly. Keep your receipt and original packaging for the claim.
Products are direct shipped from Supplier.
* Rates from 0–36% APR. Payment options through Affirm are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. CA residents: Loans by Affirm Loan Services, LLC are made or arranged pursuant to a California Finance Lenders Law license. For licenses and disclosures, see affirm.com/licenses. For example, a $800 purchase could be split into 12 monthly payments of $72.21 at 15% APR or 4 interest free payments of $200 every 2 weeks.
**Rates from 0%-36% APR. Payment options through Shop Pay Installments, are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. State notices to consumers https://www.affirm.com/licenses.