Here's Coolant Reservoir Tank w/ Sensor & Cap Fits Mack Truck Models, & 22061290 OEM from us. It's constructed with exact OEM specifications for seamless fit and efficiency to the mentioned truck models. It includes a sensor to monitor coolant fluid level and a cap for optimal level. Moreover, it will maintain pressure, hold excess fluid, and prevent the engine from overheating during operation. A detailed explanation of this replacement part is added below:-
Design & Size Attributes: Our coolant reservoir tank replacement has the following size details: length is 32-1/2" and width is 12". It will seamlessly fit into the designed models and efficiently regulate the excess fluid.

Robust Construction: This coolant tank is crafted from durable plastic. The material will ensure resistance against heat, temperature, and pressure. It will withstand the surrounding rigors during operation. It's a translucent reservoir tank that provides partial visibility (to the naked eye) of fluid level.
Monitoring Sensor: This coolant reservoir tank is integrated with a monitoring sensor. It will regularly indicate the component levels, allowing truck drivers to take necessary actions during low or high levels.
Securing Cap: The tank features a cap for secure sealing. It will ensure pressure relief amid coolant expansion and prevent the entry of contaminants such as dirt, debris, etc. No need to worry about leakage as well.
Hassle-Free Installation: Our coolant will fit perfectly into the engine slots, effortlessly replacing existing/original factory parts. It's suggested that you seek professional help for installation, but if you're doing it yourself (DIY), then switch off the engine and leave it to cool down. Don't work when coolant and parts are hot as it will lead to injuries.
Compatibility: Check out the list of trucks and models below:- Replacement OEM Part No.: 22061290, 603-5505, 6035505.
Compatible with VHD, VNL, VNM, VN 2008-2017 Models.
Compatible with Mack CHU, CXN, CXU (2008-2017) Models.
Compatible with Pinnacle Truck Engines.

Note: Check the OEM part number and compatible truck models before purchasing.