Warm the incoming air on cold starts with the Standard Ignition Engine Air Intake Heater DIH4. It installs as a direct-fit replacement for the 2001-2004 Chevrolet Silverado 2500 HD and Silverado 3500, the 2003-2004 Chevrolet C4500 Kodiak and C5500 Kodiak, the 2001-2004 GMC Sierra 2500 HD and Sierra 3500, and the 2003-2004 GMC C4500 Topkick and C5500 Topkick.
Manufacturer part number DIH4.
Fitment: 2001-2004 Chevrolet Silverado 2500 HD; 2001-2004 Chevrolet Silverado 3500; 2003-2004 Chevrolet C4500 Kodiak; 2003-2004 Chevrolet C5500 Kodiak; 2001-2004 GMC Sierra 2500 HD; 2001-2004 GMC Sierra 3500; 2003-2004 GMC C4500 Topkick; 2003-2004 GMC C5500 Topkick. See the Buyer's Guide tab to confirm your vehicle.
What does this air intake heater do?
It warms the air entering the intake, giving the engine warmer charge air during cold-weather startup and warm-up.
Which vehicles does the DIH4 fit?
It's a direct-fit replacement for the 2001-2004 Chevrolet Silverado 2500 HD/3500, GMC Sierra 2500 HD/3500, and the 2003-2004 Chevrolet Kodiak and GMC Topkick C4500/C5500.
What are signs the air intake heater may need replacing?
Hard cold starts, extended cranking, or rough running until the engine warms up. Diagnose the cause first, since these symptoms can have other sources.
What is the manufacturer part number?
The manufacturer part number is DIH4.
Is this a direct replacement?
Yes. It installs in place of the original engine air intake heater on the listed applications. Confirm your vehicle in the Buyer's Guide tab.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
