Frequently Asked Questions About International PayStar 5000 Radiator Tubes & Hoses

What model years are these radiator hoses compatible with for the International PayStar 5000?

Our radiator hoses and tubes are designed to fit International PayStar 5000 models from 2003 through 2017. However, compatibility can vary based on your specific engine configuration (CAT C13, CAT C15, Cummins ISX, or MaxxForce). We recommend checking your VIN or calling our support team at 1-888-875-7787 to confirm the exact fit for your truck before ordering.

Are these OEM or aftermarket hoses, and what's the quality difference?

We carry both OEM International/Navistar hoses and high-quality aftermarket options from trusted manufacturers like Gates and Dayco. Our aftermarket hoses meet or exceed OEM specifications, using EPDM rubber compounds rated for temperatures from -40?F to 257?F. The main difference is price - aftermarket options typically cost 30-50% less while providing comparable durability and performance.

What tools do I need to replace radiator hoses, and how difficult is the installation?

Basic installation requires standard hand tools: hose clamp pliers, flat and Phillips screwdrivers, and a socket set. Most upper radiator hoses can be replaced in 30-45 minutes, while lower hoses may take 1-2 hours due to limited access. The biggest challenge is usually reaching clamps near the frame rails. We recommend having a drain pan ready and replacing coolant clamps at the same time to prevent future leaks.

How can I tell if I need the molded or flexible style hoses for my PayStar?

Molded hoses have pre-formed bends and are designed for specific routing, while flexible hoses can be bent to fit various configurations. Most PayStar 5000 models use molded upper and lower radiator hoses for optimal flow and fit. If your truck has aftermarket modifications or non-standard engine placement, flexible hoses might be necessary. Check your existing hose shape or provide us with photos for accurate identification.

What's included in a complete radiator hose kit, and should I replace all hoses at once?

A complete kit typically includes the upper radiator hose, lower radiator hose, bypass hoses, and heater hoses. Some kits also include new constant-torque clamps. We strongly recommend replacing all cooling system hoses together if your truck has over 500,000 miles or if any hose shows signs of swelling, cracking, or softness. This prevents roadside failures and repeated labor costs, as hoses tend to fail around the same time due to similar wear conditions.