Shop Kenworth W990 Radiator Tubes, Gaskets & Hoses

Find Kenworth W990 radiator tubes, gaskets, and hoses that fit your truck at 4 State Trucks. Keep your engine cool and running smoothly with reliable OE and aftermarket parts. Explore our Kenworth W990 part options today

Kenworth W990 Radiator Tubes, Gaskets & Hoses

Kenworth W990 Radiator Tubes, Gaskets & Hoses is a comprehensive product lineup that includes a wide range of essential cooling system components for Kenworth W990 semi-trucks. This product lineup features a diverse selection of high-quality radiator hoses, coolant tubes, and gaskets designed to keep your truck's engine running at optimal temperatures. These products are built to withstand the rigors of heavy-duty trucking, ensuring reliable performance and extended service life. With a focus on durability and compatibility, this product lineup provides the parts you need to maintain and repair your Kenworth W990's cooling system, helping to prevent costly breakdowns and keep your truck on the road. Whether you're in need of replacement hoses, custom-fit tubing, or specialized gaskets, this product lineup has you covered with top-of-the-line solutions from trusted brands like BESTfit and RigMaster.

Frequently Asked Questions About Kenworth W990 Radiator Tubes, Gaskets & Hoses

Will these radiator hoses and tubes fit my specific year model W990?

Our radiator tubes, gaskets, and hoses are designed to fit Kenworth W990 models from 2018 to present. However, there can be variations based on engine type (Cummins X15, PACCAR MX-13) and radiator configuration. We recommend checking your VIN or calling our tech support at 1-888-875-7787 with your truck's serial number to ensure exact fitment. Most components will indicate specific year ranges and engine compatibility in the product description.

What's the difference between OEM and aftermarket radiator hoses, and which should I choose?

OEM hoses are manufactured to exact Kenworth specifications using EPDM rubber compounds rated for -40?F to 257?F. Aftermarket options from Gates, Dayco, or Continental often use similar materials but may offer reinforced designs with additional fabric plies for heavy-duty applications. For standard replacement, quality aftermarket hoses perform comparably to OEM at 30-40% less cost. Choose OEM if you're under warranty or need exact factory routing.

How difficult is it to replace radiator hoses and gaskets on a W990?

Most upper and lower radiator hoses can be replaced in 30-45 minutes with basic tools. You'll need hose clamp pliers, a coolant drain pan (15-20 gallon capacity), and possibly a pick tool for stubborn hoses. The main challenges are accessing the lower hose connections and properly bleeding air from the cooling system afterward. Gasket replacement requires radiator removal, which typically takes 2-3 hours and may require a second person due to the radiator's weight.

What are the signs that my radiator hoses or gaskets need replacement?

Replace hoses immediately if you notice: soft or spongy spots when squeezed, visible cracks or dry rot, bulging areas, coolant residue around clamp areas, or if they're over 4 years old. For gaskets, watch for coolant seepage at the tank-to-core joints, recurring low coolant levels without visible leaks, or white residue around the radiator seams. Don't wait for complete failure - a blown hose can cause engine damage within minutes.

Do I need special coolant or additives when replacing hoses and gaskets?

Kenworth W990s require heavy-duty extended life coolant (ELC) meeting Kenworth/PACCAR specifications. Use only OAT (Organic Acid Technology) coolants - typically red or pink in color. Never mix conventional green coolant with ELC. When replacing hoses, flush the system if the coolant is over 2 years old. Add supplemental coolant additives (SCAs) only if using conventional coolant, not with ELC. Always use distilled water for any dilution to prevent mineral deposits.