Four Seasons 38903 front a/c orifice tube for the 1999-2006 Chevrolet Silverado 1500 and other vehicles is an automatic adjusting orifice tube that meters refrigerant into the A/C system.
- Seals high pressure from low pressure with the necessary O-rings and gaskets.
- Designed to improve A/C cooling at slow speeds, in stop-and-go traffic and in hot climates.
- Reduces A/C compressor load to help extend compressor life, improve fuel economy and lower emissions.
- Replaces the OE standard fixed orifice tube and is compatible with R12 and R134.
- No modification to the A/C system is required.
Weak cooling at idle or in slow traffic can come from a restricted orifice tube, but low refrigerant or a compressor problem can look the same. With the engine off, look over the A/C lines and fittings for oily residue, and have a shop test the system pressures before you replace anything.
This part is listed for a wide range of Chevrolet, GMC, Buick, Cadillac and Dodge models, including the 1999-2006 Chevrolet Silverado 2500 and the 1999-2006 GMC Sierra 1500. If your car is not named here, look up your year, model and engine on the Buyer's Guide tab.
Specifications
- Position: Front
- Type: Automatic adjusting orifice tube
- Compatible refrigerants: R12 and R134
In the box: one orifice tube with O-rings and gaskets.
