Diagnosis Brief
what this complaint usually turns out to be
what this complaint usually turns out to be
Coolant Leak — Where It Usually Comes From, and What It Costs
How real visits for a coolant leak ended at independent shops across the US — the part actually replaced, how often, and what it cost when it was the only fix.
Water pump or radiator
Nearly half of all these visits end in one of these two
Water pump $261 – $651
Radiator $189 – $624
typical cost when it was the only fix
(parts + labor)
(parts + labor)
| The fix involved | Share of these visits* | Typical cost† | Median |
|---|---|---|---|
| Water pump | $261 – $651 | $394 | |
| Radiator | $189 – $624 | $401 | |
| Thermostat | $165 – $408 | $262 | |
| Hose | $103 – $387 | $207 | |
| Gasket / seal | $65 – $444 | $188 | |
| Radiator hose | $130 – $386 | $234 | |
| Intake manifold | $253 – $740 | $445 | |
| Pipe / tube | $26 – $196 | $65 | |
| Other, rarer causes | smaller shares — heater hoses, thermostat housings, coolant reservoirs, head gaskets | varies | — |
*Share of visits whose repair involved this part; combined repairs count toward each part, so shares overlap and don't add to 100%. †Middle half of real invoices when this was the only fix — parts + labor, all vehicle types.
Which one is yours? Listen first
- Puddle under the front middle — Radiator and water pump are the two leaders, and they sit near each other at the engine's front.
- Drips near hoses or clamps — Hose ends and clamps are the cheap end of coolant leaks — and among the most common.
- No puddle but the level drops — Coolant disappearing without a trace either exits as steam from a small hot-surface leak — or, worst case, is entering the engine.
What to expect from the shop
A pressure test finds most coolant leaks in minutes — expect that before any part is quoted. Hoses and clamps are the cheap end; radiators and water pumps the middle; a head gasket the expensive tail that needs its own proof. A refill with the exact specified coolant and a bleed are part of every fix.
About this data · How to use this brief
Vehicles all makes and models, US fleet
Data confidence High — large sample, stable shares
Records through July 2026, refreshed continuously
Source paid invoices from independent US repair shops
Data confidence High — large sample, stable shares
Records through July 2026, refreshed continuously
Source paid invoices from independent US repair shops
Take it to the shop. It tells you what the likely answers are and what each one should cost — so when the diagnosis comes back, you already know whether the number fits. Vehicle-specific price reports for the common fixes are on fixdozer.com.