Coolant leak repair costs $150 to $1,800 per repair in 2026
Fixing a coolant leak costs $150 to $1,800 in 2026, and the price depends almost entirely on where the leak is. A loose clamp or cracked hose is $150 to $350. A radiator hose replacement is $498 to $558 per RepairPal. A coolant reservoir is $313 to $377. A thermostat housing is $150 to $400. A water pump is $400 to $900. A radiator is $870 to $1,800 depending on the car. A head gasket, the worst case, is $1,500 to $3,000 and up. A pressure test to find the leak is $50 to $150.
What price guides say
We checked 2 price guides and read every number on their pages on October 7, 2026. They do not all measure the same thing, so read each line for what it counts.
| Source | What it found |
|---|---|
| RepairPal | RepairPal lists radiator replacement at $1,368 to $1,550 and radiator hose replacement at $498 to $558. |
| RepairPal | RepairPal lists a Toyota Corolla radiator replacement at $890 to $1,046 and a radiator hose replacement at $288 to $357. |
| Empire Auto Protect | Empire Auto Protect lists radiator replacement at $450 to $1,200 at independent shops and $1,500 to $2,400 at dealers for luxury or European models. |
| RepairPal | RepairPal lists a Chevrolet Impala radiator replacement at $1,291 to $1,462 for 2015 to 2020 models and a coolant reservoir replacement at $452 to $513. |
What pushes the price up
| What | Why it matters |
|---|---|
| Where it leaks | Hose or clamp $150 to $350. Reservoir $313 to $377. Thermostat $150 to $400. Water pump $400 to $900. Radiator $870 to $1,800. Heater core $800 to $1,500. Head gasket $1,500 and up. |
| Access | A water pump behind the timing belt costs far more in labor than one on the front of the engine. |
| Your vehicle | Trucks, V6 and V8 engines and European cars cost more for the same part. |
| Coolant | A drain and fill is $60 to $150 on top of most repairs. |
| Diagnosis | A pressure test and dye check runs $50 to $150, often credited to the repair. |
What the price includes
A quote covers the pressure test to find the leak, the failed part, labor, new coolant and a recheck under pressure. If the leak turns out to be the head gasket, the shop will give you a new, much larger estimate. It does not include tax or extras the provider adds on the day.
Who charges this and how it is billed
Coolant leaks are fixed at independent shops, dealers and chain repair shops. Most bill by the hour for labor plus the cost of parts and new coolant. Many shops charge a fee to find the leak, and some credit it if you do the repair with them. Dealers often charge more than independents. Empire Auto Protect lists radiator replacement at $450 to $1,200 at independent shops and $1,500 to $2,400 at dealers for luxury or European models. Ask for a written estimate before work starts, and ask the shop to call you if the cost will rise.
How to judge your quote
- Ask where the leak is and how the shop found it.
- Ask if a pressure test is included or credited to the repair.
- Ask for the part, labor and coolant on separate lines.
- A fair quote names the failed part and gives a warranty in writing.
- Compare the total with the range above: $150 to $1,800 per repair for most people in 2026.
Ways to pay less
- Pay for the pressure test first. Guessing at parts is how a $300 hose job becomes $1,500.
- Replace nearby old hoses while the system is drained. Labor overlaps and coolant is already out.
- Ask for aftermarket parts on hoses, reservoirs and thermostats. Brand matters less than on a radiator.
- Stop driving if the temperature gauge climbs. Topping off and driving on a leak leads to a head gasket.
Why this costs more in 2026
Coolant itself got dearer in 2026 because it is a petroleum based product, and oil jumped after the Iran war began in February 2026. Hoses, pumps and radiators are mostly imported, and freight rose with record fuel prices. Shop labor runs $100 to $150 an hour at independents and more at dealers, and newer engines bury cooling parts under covers and sensors that add hours.
How we got these numbers
The range on this page comes from RepairPal and Empire Auto Protect. We opened each source page and read every number on it on October 7, 2026. Where the sources disagree, the table above shows each one so you can see the spread. These are planning ranges, not quotes. The written price you are given is the real price.
Common questions
How much does it cost to fix a coolant leak?
It depends on the part. RepairPal lists a radiator hose at $498 to $558 and a radiator at $1,368 to $1,550. Your quote may be higher or lower.
Can I keep driving with a coolant leak?
It is risky. Low coolant can overheat the engine and cause costly damage. Get it checked soon.
How long does the repair take?
A hose or clamp can take an hour or two. A radiator or water pump can take half a day or more.
Does a warranty cover a coolant leak?
A new car warranty or an extended plan may cover it if the part failed. Check your contract for what is listed.