Radiator Cap for 1997-2009 Chevrolet C7500 Kodiak & More - Gates 31521

Hold precise cooling-system pressure and keep the coolant's boiling point in check with the Gates OE-Type Radiator Cap 31521. It drops in as a direct-fit replacement across many heavy-duty vehicles, including the 1997-2009 Chevrolet C7500 Kodiak 6.0L / 6.6L / 7.0L / 7.2L / 7.4L / 8.1L, 1997-2008 Chevrolet C6500 Kodiak 6.0L / 6.6L / 7.0L / 7.2L / 7.4L / 8.1L and 1997-2002 GMC C6500 Topkick 6.0L / 6.6L / 7.0L / 7.2L / 7.4L / 8.1L, plus numerous buses, farm equipment and tractors. See the "Vehicles it fits" section for the full list.

This standard cap seals the filler neck and holds the system at its rated pressure to raise the coolant's boiling point. When pressure climbs above the rating, the vent valve releases it; as the engine cools, the vacuum-relief valve lets coolant draw back from the recovery tank where one is fitted.

• Rated pressure: holds the cooling system at a 9-11 PSI rating (10 PSI) for accurate, consistent control.
• Application-specific valving: engineered for precise pressure control with vent and vacuum-relief valves matched to the application.
• Durable construction: built from corrosion-resistant heavy-gauge metal or high-quality plastic depending on the application, for long service life.
• Filler-neck fit: 2.33 in shell outside diameter with a 1.25 in cap depth.
• No adjustment needed: requires no adjustment for installation.

Country of origin: China.