When you can't make it to the dealership, you can buy authentic INFINITI parts online, including part number 214301P111, your INFINITI Radiator Cap. Despite being a small part of the Cooling System, the Radiator Cap plays an important role in the engine function. Without a radiator cap, your engine could overheat and be damaged. Thankfully, a missing or worn out Radiator Cap is simple to replace on your own. And it's an affordable part! The Radiator Cap is also sometimes called a coolant reservoir cap.

What's the purpose of a Radiator Cap? The cap prevents coolant from spilling out of the radiator and works to maintain proper pressure levels in the cooling system.

It might be time to order a replacement INFINITI Radiator Cap if you see an overflowing coolant reservoir, rust around the current cap, white streaks on the radiator, a collapsed radiator hose, or leaks around the current cap. An overheated engine may also be a sign it's the right time to replace your INFINITI Radiator Cap. If a new radiator cap doesn't solve your radiator overheating problems, we advise putting your INFINITI in the hands of technicians at the neighborhood INFINITI dealership. The cooling system must stay healthy to help keep your INFINITI Q45 1997-2001 working as designed.

Installing a new INFINITI Radiator Cap is super simple, especially if you know how to pop your hood and where to find your owner's manual. Before you get started, let the engine cool down. Then, review your INFINITI owner's manual to figure out where exactly the radiator cap is located. Find it? Time to ensure your replacement cap has the same pressure rating as the current one on your vehicle. (Shop with INFINITI Parts and you don't have to worry. We know your INFINITI model and trim inside and out.) Unscrew the old cap and screw on the new one. Replacing your INFINITI Radiator Cap really is that simple!

Buy a new INFINITI Radiator Cap online for your INFINITI Q45 1997-2001 today. See the What This Fits tab for more fitment information.

Fits Q45