Keep your heavy-duty cooling system sealed and holding pressure with the Dorman - HD Solutions Engine Coolant Reservoir Cap 902-5201CD. It installs as a direct replacement for a cracked or lost original cap across a wide range of 2004-2010 Freightliner trucks — including Century Class, Classic, Classic XL, and Columbia models spanning engines from L6-6.4L to L6-15.8L (see the Buyer's Guide tab for the full list).
This twist-on cap seals the coolant reservoir and helps the system maintain pressure, which raises the boiling point of the coolant. It is a pressurized cap with a maximum pressure rating of 15 PSI, is not vented, and has no pressure release lever. Reverse-engineered from the original equipment, it is molded in black plastic and measures 63.5 mm in diameter.
- Twist-on attachment: secures to the reservoir with a twist-on fit.
- Pressurized cap: rated to a maximum of 15 PSI.
- Not vented, no pressure release lever.
- Direct replacement: reverse-engineered from the OE cap for a precise fit.
If a worn or missing cap is behind coolant loss or a system that won't hold pressure, this replaces it. Signs a cap may need replacing include coolant seepage around the reservoir and trouble maintaining system pressure. Country of origin: Taiwan. Package contents: 1 coolant tank cap. Manufacturer part number 902-5201CD (also 9025201CD).
This part cross-references / interchanges with the following part numbers:
572.2002, 0520763000, 0520763001
