Replacing worn-out components with aftermarket radiator tubes, gaskets & hoses for your Peterbilt 379 truck can help to protect your engine's cooling system and retain your big rig's resale value. If you need to replace leaky or worn-out radiator components, our selection of aftermarket radiator tubes, gaskets, and hoses is built to handle the demands of heavy-duty operation keeping coolant flowing, temperatures stable, and your engine protected. From stainless steel coolant tubes to durable Peterbilt radiator hoses and reliable silicone gaskets, this product lineup covers everything you need to keep your semi truck's cooling system sealed tight and running cool. Here's Why It's Important to Replace Worn-Out Radiator Tubes, Gaskets, and Hoses. Your radiator tubes, gaskets, and hoses essentially form the arteries of your Peterbilt 379's cooling system. They carry coolant to and from the radiator, seal key connection points, and help regulate engine temperature by ensuring consistent circulation. If even one component fails, you could be looking at overheating, downtime, or even engine damage. - Peterbilt Upper Radiator Hose & Coolant Hoses: Flexible Peterbilt coolant hoses carry coolant between the engine and radiator. Over time, these can crack, swell, or leak. Our replacement options are built from reinforced rubber or high-temp silicone for long life and a tight seal. - Radiator Tubes: Our upper coolant tubes are precision-engineered to direct hot coolant from the engine to the radiator. Made from stainless steel or reinforced materials, they resist pressure, corrosion, and vibration ideal for tough road conditions. - Radiator Gaskets: We carry gaskets for the radiator core and tank junctions, built to handle pressure and prevent internal leaks. Proper sealing ensures your cooling system maintains pressure and performs at peak efficiency. - Hose Clamps: Our torque-specific coolant hose clamps offer even sealing pressure across connections minimizing the chance of leaks or hose blowouts. A must-have for reliable cooling system performance. - Radiator Mounts & Support Bushings: Secure your radiator with high-quality mounts and support rod bushings that absorb vibration and allow for thermal expansion helping prevent stress cracks and radiator failure. - Coolant Level Sensor Kits: Add a sensor that warns you of low coolant before your temp gauge spikes. Early detection means you can avoid overheating and expensive repairs. There are several benefits to replacing old or damaged radiator components for your classic truck: - Prevents Overheating: Keep coolant flowing freely and your engine within safe operating temps. - Protects Your Engine: Avoid thermal stress, overheating, and costly damage. - Reduces Downtime: Minimize the risk of roadside breakdowns or coolant loss. - Improves Fuel Efficiency: A properly cooled engine burns fuel more efficiently. - Extends Engine Life: Keep temps stable and parts protected under all load conditions. - Supports Other Cooling Components: Maintain proper pressure to protect your water pump, thermostat, and fan clutch. When should you replace these cooling parts. If you're seeing signs like swelling hoses, coolant leaks, steam from under the hood, or rising engine temps it's time to inspect and replace your radiator components. Don t wait for a small leak to become a big problem. Shop for the perfect aftermarket Peterbilt 379 radiator tubes, gaskets, and hoses today. Whether you're swapping out a cracked Peterbilt upper radiator hose or upgrading your coolant hose system with new clamps and seals, we ve got the parts that keep your engine cool and your truck on the road.

Frequently Asked Questions About Peterbilt 379 Radiator Tubes, Gaskets & Hoses

What years do these radiator components fit, and are they compatible with both standard and extended hood 379s?

Our radiator tubes, gaskets, and hoses are designed to fit Peterbilt 379 models from 1987 through 2007. Most components work with both standard and extended hood configurations, but upper radiator hoses may differ between hood lengths. Always check the product description for specific fitment details, or contact our team with your VIN for exact compatibility verification.

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

OEM hoses use EPDM rubber compounds rated for 300?F and typically last 4-6 years under normal conditions. Our aftermarket options include both economy versions (rated for 250?F, 2-3 year lifespan) and premium silicone hoses (rated for 350?F, 8-10 year lifespan). For daily drivers, OEM or premium aftermarket work well. Show trucks benefit from silicone's durability and appearance, while economy options suit trucks nearing retirement.

Do I need special tools to replace radiator tubes and hoses, and how difficult is the installation?

Basic hand tools handle most installations: screwdrivers, pliers, and socket sets. Radiator tube replacement requires draining coolant and may need a tube puller for corroded connections. Most hose replacements take 30-60 minutes, while tube replacement can take 2-3 hours. The trickiest part is accessing lower connections, especially on trucks with aftermarket accessories. Having a coolant catch pan and new clamps on hand prevents delays.

How do I know if I need the standard or heavy-duty radiator components for my 379?

Check your radiator core size first: 2-row cores use standard components, while 3-row or 4-row cores require heavy-duty versions. Trucks with CAT 3406E, C15, or other high-horsepower engines typically need heavy-duty components. The radiator tank will have a part number tag indicating core configuration. When in doubt, measure your current hose diameters - standard upper hoses are 2 inches, while heavy-duty versions are 2.25 or 2.5 inches.

Why are my new radiator hoses leaking at the connections, and how can I prevent this?

Most leaks stem from reusing old clamps or improper installation rather than defective hoses. Always replace spring clamps with new constant-tension clamps when installing new hoses. Clean all connection points of rust and debris, apply a thin layer of coolant-safe lubricant to ease installation, and ensure hoses seat fully on their barbs. Avoid over-tightening worm-gear clamps, which can cut into hoses - tighten until snug plus one-quarter turn.