Halltech's Cold-Core™ philosophy is to keep the intake air as cold as possible, for as long as possible.

The Halltech Cold-Core™ Thermal Sleeve is an 18-inch heat-resistant sleeve designed to help protect Halltech intake tubes from engine-compartment heat. Constructed from heat-resistant DuPont™ Nomex® aramid fabric combined with a stretch elastomer, the sleeve creates a lightweight thermal barrier around the intake tube to help reduce heat transfer into the incoming air.

Depending on the Halltech intake system, the 18-inch length may also extend far enough to cover portions of our Flex-Lock™ throttle-body hose and/or filter neck. The flexible construction allows the sleeve to conform to the intake system, and a simple slit can be made to provide access to MAF sensors or PCV fittings where required.

Real-World Testing

The Cold-Core™ Thermal Sleeve has been tested under real-world driving conditions. During a test with 70°F ambient temperatures, 30 minutes of normal driving followed by a high-speed run to 130 mph maintained intake air temperatures at approximately ambient temperature throughout the test.

Following the 130-mph run, the vehicle was allowed to idle for 60 seconds, causing IATs to rise to 78°F—only 8°F above ambient. After just one additional block of driving, IATs dropped back to 72°F.