Frequently Asked Questions About Kenworth T880 Coolant Reservoirs

Will these coolant reservoirs fit my specific year model T880?

Most aftermarket coolant reservoirs are designed to fit Kenworth T880 models from 2013 to present. However, there can be variations based on your engine configuration (PACCAR MX-13, Cummins ISX15, or Cummins X15). Always verify compatibility by checking your current reservoir's part number or providing your VIN when ordering. Models with specialized cooling packages or vocational configurations may require specific reservoir designs.

What's the difference between OEM and aftermarket reservoir materials?

OEM reservoirs are typically made from heavy-duty polyethylene plastic rated for temperatures up to 250?F. Quality aftermarket options use similar high-density plastics with UV stabilizers to prevent cracking and discoloration. Avoid budget reservoirs made from thin, translucent plastic as they're prone to stress cracks near the mounting points and cap threads. Premium aftermarket brands often feature reinforced necks and thicker walls than OEM for increased durability.

Can I install a new coolant reservoir myself, or do I need special tools?

Installation typically takes 30-45 minutes and requires basic hand tools: a socket set, pliers for hose clamps, and a drain pan. The main challenges are accessing the lower mounting bolts and properly bleeding air from the cooling system afterward. You'll need to drain approximately 2-3 gallons of coolant before removal. Make sure to transfer the coolant level sensor from your old reservoir and check that all hoses seat properly on the new fittings to prevent leaks.

Why do T880 coolant reservoirs crack, and how can I prevent it?

The most common failure points are the cap neck (from over-tightening), mounting tabs (from vibration), and the bottom seam (from pressure cycling). Cracks often develop due to extreme temperature fluctuations, improper coolant mixture causing internal pressure, or age-related plastic degradation. Prevent premature failure by maintaining proper 50/50 coolant mixture, replacing the pressure cap every 2-3 years, and ensuring mounting bolts aren't over-torqued during installation.

Should I upgrade to a larger capacity reservoir?

Standard T880 reservoirs hold approximately 1.5-2 gallons, which is adequate for most applications. Larger 2.5-3 gallon reservoirs are beneficial for severe-duty applications, extended idle time operations, or trucks running auxiliary equipment that generates additional heat. Keep in mind that larger reservoirs may require bracket modifications and ensure adequate clearance from belts, hoses, and the hood when closed. The extra capacity provides better cooling system surge protection but isn't necessary for standard highway applications.