Frequently Asked Questions About Kenworth T680 Coolant Reservoirs

What years and models are these coolant reservoirs compatible with?

Our Kenworth T680 coolant reservoirs are designed to fit model years 2013 through current production. These reservoirs are specifically engineered for the T680 series, including both day cab and sleeper configurations. However, always verify compatibility by checking your VIN or consulting with our customer service team, as minor variations may exist between early and late model years.

What material are these reservoirs made from, and how long do they typically last?

Most T680 coolant reservoirs are manufactured from high-density polyethylene (HDPE) or similar heavy-duty plastics that resist cracking and chemical degradation. Under normal operating conditions, you can expect 5-7 years of service life. Factors affecting longevity include exposure to extreme temperatures, proper coolant maintenance, and avoiding over-tightening of mounting hardware.

Can I install a coolant reservoir myself, or do I need professional installation?

Installation typically takes 30-45 minutes and requires basic hand tools. The process involves draining coolant, removing 2-4 mounting bolts, disconnecting hoses and sensors, then reversing the process with the new reservoir. While many drivers complete this themselves, we recommend professional installation if you're uncomfortable working with cooling systems or lack proper tools for safe coolant disposal.

What's the difference between OEM and aftermarket coolant reservoirs?

OEM reservoirs are manufactured to exact Kenworth specifications and typically carry a higher price point. Quality aftermarket options often use the same materials and manufacturing processes but may cost 30-50% less. Key differences to consider include warranty coverage, cap design, sensor port locations, and overflow tube routing. Both options work effectively when properly installed.

How do I know when my coolant reservoir needs replacement?

Common signs include visible cracks or stress marks on the reservoir body, persistent coolant odor in the cab, low coolant warnings despite regular top-offs, and white residue around the cap or seams indicating leaks. Additionally, if your reservoir shows discoloration, warping, or the level markings have become illegible, it's time for replacement to prevent roadside failures.