Brock Gasoline/Petrol Engine Heat Tabs — 100 per Tube, Certified 260°F Melting Indicator

Brock Gasoline/Petrol Engine Heat Tabs are certified visual indicators that show when an engine has reached overheating temperatures by melting their center at about 260°F (126°C).

These compact heat tabs are designed to give an immediate, undeniable visual record of excessive engine temperature. Packaged as 100 tabs per tube, Brock heat tabs are certified for accuracy and widely used by mechanics, racers, fleet operators, and inspectors who need a simple way to document overheating events without relying on memory or telemetry alone.

How do Brock heat tabs tell me an engine overheated?

Each tab contains a central pellet formulated to liquefy at approximately 260°F (126°C). When the pellet melts it leaves a clear, visible mark indicating the engine reached that temperature, creating a permanent record of the event.

• Center pellet melts at ~260°F (126°C) for consistent indication
• Melting produces an unmistakable visual change that’s easy to document
• Sticks to heat-exposed locations for direct evidence where it occurred

Where and how should I place the tabs for reliable results?

Place a tab on a clean, heat-exposed surface near the part you want to monitor—common spots include cylinder heads, thermostat housings, exhaust manifolds, and oil pan areas. Ensure contact and avoid oily or wet surfaces so the adhesive holds and the pellet accurately senses local temperature.

• Apply to degreased, dry metal surfaces for best adhesion
• Use near suspected hot spots: head, manifold, thermostat, turbo housing
• Check location after cooling to photograph or retain as evidence

How reliable are these tabs compared to gauges or sensors?

Brock heat tabs are a certified, passive verification tool rather than a real-time monitoring device. They do not replace temperature gauges or sensors for live readings, but they provide incontrovertible proof that a threshold temperature was reached, even if electronics fail or data logs are unavailable.

• Guaranteed and certified for accurate threshold indication
• Useful when gauges are missing, damaged, or suspected of tampering
• Simple, inexpensive complement to electronic monitoring systems

What do I get in one tube and how widely are these used?

Each Brock tube contains 100 heat tabs, offering enough markers for repeated monitoring or for equipping multiple vehicles. With over 25 million sold, these tabs are trusted across automotive shops, racing teams, transportation fleets, and inspection services.

• 100 tabs per tube for long-term use or multi-vehicle monitoring
• Proven sales volume: over 25 million units sold globally
• Compact and portable—easy to keep in a toolbox or service kit

Who is this for? Brock heat tabs are ideal for mechanics, fleet managers, motorsport teams, vehicle inspectors, and DIYers who need a clear, certified indicator that an engine or component reached dangerous temperatures. Use them alongside gauges and sensors for comprehensive temperature management and for documenting overheating incidents when electronic records aren’t available.