Shop Kenworth T660 Coolant Reservoirs

Kenworth T660 Coolant Reservoirs

Keep your cooling system running smooth with Kenworth T660 Coolant Reservoirs built to help you maintain proper coolant levels and engine temperatures mile after mile. This comprehensive product lineup includes everything you need, from caps and level sensors to complete coolant reservoir assemblies. All parts are made to be a direct fit for Kenworth and Peterbilt models, so installation is quick and straightforward no modifications, no guesswork. Whether you're replacing a cracked tank, upgrading to a reservoir with a built-in sensor, or just swapping out a worn cap, these components are designed for reliable performance and long-lasting durability. They 're built to handle the demands of heavy-duty trucking without skipping a beat. Featuring trusted brands like BESTfit and TPHD, you 're getting parts that are made to hold up under pressure and keep your cooling system running at peak efficiency. Don t wait for overheating issues to slow you down. Keep your coolant levels in check and your engine protected with high-quality parts from this dependable Kenworth T660 Coolant Reservoir lineup.

Frequently Asked Questions About Kenworth T660 Coolant Reservoirs

What years and engine models are these coolant reservoirs compatible with?

Our Kenworth T660 coolant reservoirs are designed to fit model years 2008-2017. They're compatible with most engine configurations including Cummins ISX, Caterpillar C15/C13, and Paccar MX engines. However, trucks with aftermarket cooling systems or custom modifications may require additional verification. We recommend checking your current reservoir's part number or contacting us with your VIN for exact fitment confirmation.

Are these reservoirs made of the same material as OEM, and how long do they typically last?

Most of our coolant reservoirs are manufactured from high-density polyethylene (HDPE) or reinforced polypropylene, matching or exceeding OEM specifications. These materials are specifically chosen for their resistance to extreme temperatures, chemical corrosion from coolant, and UV degradation. With proper maintenance, you can expect 5-7 years of service life under normal operating conditions. Heavy-duty aftermarket options featuring thicker walls may last even longer than factory units.

What's involved in the installation process, and what tools will I need?

Installation typically takes 30-45 minutes and requires basic hand tools: a socket set (usually 10mm and 13mm), pliers for hose clamps, and a drain pan. The process involves draining the coolant, disconnecting the overflow and radiator hoses, unbolting the mounting brackets (usually 2-3 bolts), and reversing the process with the new reservoir. Most units are direct replacements requiring no modifications. Always ensure the system is cool before starting, and remember to properly bleed air from the cooling system after installation.

What's the difference between surge tanks and overflow reservoirs for the T660?

The T660 uses a pressurized surge tank system, not a simple overflow reservoir. Surge tanks maintain system pressure and allow for coolant expansion while keeping air out of the system. They feature a pressure cap (typically 15-16 PSI) and both inlet and outlet connections. Using an incorrect non-pressurized overflow tank can cause overheating and system damage. All reservoirs we list for the T660 are proper surge tanks unless specifically noted otherwise.

How do I know when my coolant reservoir needs replacement?

Common signs include visible cracks or stress marks (especially around the mounting points and neck), coolant stains indicating slow leaks, a swollen or deformed tank body, degraded or brittle plastic that's turned yellowish or cloudy, and persistent low coolant levels without visible external leaks. Additionally, if your cap won't hold pressure or the level sensor triggers false warnings, replacement is recommended. Regular inspection during oil changes can catch problems before they lead to roadside failures.