• Carries hot, pressurized coolant from the engine to the heater core
• Replacement is best done by a professional or those with advanced auto experience
• Custom-fitted, custom-designed, and durability-tested for your vehicle

Your Nissan's HVAC Heater Hose provides a path for heated, pressurized coolant to move from the engine to the heater core. The rubber material that forms the tube of the HVAC Heater Hose is durable and long-lasting. It's engineered to hold extremely hot liquid within the hose, and can handle sludge, debris, and extreme heat or cold on its outer hose. Additionally, it's engineered to remain securely in place, despite engine vibrations.

While it's designed to withstand extreme conditions, the frequent flow of high-temperature coolant can wear down the rubber on your HVAC Heater Hose and make the inside of the hose fall apart or fracture. When the inner lining cracks it can lead to a coolant leak and cause damage to the cooling system in your engine. The HVAC Heater Hose may also stiffen and break as it ages, causing splitting or cracks. Common symptoms of a heater hose that needs to be replaced include your engine overheating, coolant leaks, or problems with the heater core.

If you're looking to replace a damaged or old HVAC Heater Hose on your Nissan Frontier or Nissan Xterra, make sure to buy one that's made to fit your vehicle. An HVAC Heater Hose has different length sizes from vehicle to vehicle. Finding one that's the right size for your vehicle ensures the hose is not too long, and therefore obtrusive, but has enough length to connect to the heater core.

Thinking about replacing the hose on your own? You may be able to install your heater hose if you're familiar with more technical auto repairs, or you can consult with a professional to install a new hose. When it's time to install, first place a drain pan beneath the Nissan to keep your work area clean from any remaining coolant from the hose. Additionally, you'll want to ensure that the engine has been turned off a while. Never replace a heater hose with a hot engine.

Here are general HVAC Heater Hose installation steps — make sure to consult your manual for detailed instructions. Start by draining the coolant by twisting open the drain valve. Then, peel back the rubber seal with a sharp pick, pliers, or a screwdriver before you unscrew the tube from each end. Remove the old HVAC Heater Hose and twist on the new one. Make sure to add a little bit of sealant as too much can clog the hose. Finally, add coolant.

One last thing to note for do-it-yourselfers: Nissan cooling systems may be tough to get all of the air out after draining the coolant. If there are air pockets in the cooling system, it could result in the engine overheating, a sound of water falling right behind your dashboard, or a number of other issues. If you're not an advanced mechanic, consider leaving the Nissan hose replacement to an expert.

This HVAC Heater Hose fits your Nissan Frontier or Nissan Xterra. Check the What This Fits tab for additional fitment info.

Fits Frontier, Xterra