• 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 creates a secure way for hot, pressurized coolant to move to the vehicle's heater core from the engine. The flexible, thick material that forms the tube of the Hvac Heater Hose is durable and reliable. It can withstand having hot coolant flowing through the hose, and can withstand gunk, dirt, and excessive heat or cold on its outer hose. It's also designed to absorb vibrations caused by the engine.

However, over time the constant exposure to hot liquid can degrade 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. Your Hvac Heater Hose can also become frail as it ages, creating small splits or cracks. Common symptoms of a heater hose that's been compromised include your engine overheating, leaking coolant, or problems with the heater core.

If you need to replace a compromised or aging Hvac Heater Hose on your Nissan Frontier 2005-2020, Nissan Pathfinder 2005-2012, or Nissan Xterra 2005-2015, get one that's made to fit your vehicle. An Hvac Heater Hose has different length sizes depending on your make and model. Getting the correct size guarantees that the hose length isn't too long, and blocking other components, but still long enough to plug into the heater core from the engine.

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. Before you get started, place a drain pan underneath the Nissan to catch any remaining coolant within the hose. Another tip before you begin: make sure 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. First, drain the coolant by twisting open the drain valve. Then, peel back the rubber seal with a sharp pick, pliers, or a screwdriver and twist off the hose from the engine and heater core. Twist on the new one. Be sure to use a small amount of sealant on the new hose because too much can create clogging issues. Lastly, refill your coolant.

One last thing to note for do-it-yourselfers: Nissan cooling systems can be difficult to get all of the air out once you've drained the coolant. If there are air pockets in the cooling system, it could result in the engine overheating, a waterfall sound behind the dashboard, or several other problems. If you're not an advanced mechanic, you may want to bring your Nissan to an expert.

Purchase this HVAC Hvac Heater Hose for your Nissan Frontier 2005-2020, Nissan Pathfinder 2005-2012, or Nissan Xterra 2005-2015. Check the What This Fits tab for more fitment details.

Fits Frontier, Pathfinder, Xterra