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Cooling System Leak Detection Dye

Cooling System

Fluoresces under UV light to reveal coolant leaks in hoses, seals, gaskets, radiator, and water pump, enabling accurate leak detection.

Cooling system leak detection dye is a fluorescent additive that mixes with your engine coolant and circulates through radiators, hoses, and water pump passages. Under ultraviolet light, any coolant leak glows brightly, allowing technicians to quickly identify whether a leak is in a hose, water pump seal, thermostat housing, or radiator. This diagnostic tool saves time and helps prevent overheating problems.

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Typical part cost
$8–$20🔒
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Typical labor cost
$50–$150🔒
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DIY difficulty
2/10

⚠️ Owners Often Notice

If the Cooling System Leak Detection Dye is starting to fail, these are the signs owners most commonly report before it gets worse:

Coolant level dropping
Visible fluid drips under vehicle
Engine overheating

Related Services

Services commonly performed on or around this part.

Add Cooling System Leak Detection Dye

No standard interval on file

Replace Cooling System Leak Detection Dye

No standard interval on file