Gates 90-05 Mazda Miata/MX-5 / 00-04 Toyota Tundra / 04-05 BMW 320i Micro-V Belt

This is a Gates Micro-V serpentine belt, part number K040338. It's designed to drive all the accessories on your engine, like the alternator, power steering pump, and A/C compressor. A worn-out belt can cause a lot of problems, from a dead battery to a loss of power steering, so keeping it in good shape is important.

Gates has been making belts for a long time, and this Micro-V belt uses a well-built construction to handle the constant flexing and tension it goes through. The ribbed design helps it grip the pulleys securely, which means your accessories get the power they need without slipping. This belt fits a variety of vehicles, including popular models like the Mazda Miata, Toyota Tundra, and BMW X5, making it a solid option for many mechanics and DIYers.

When it's time to replace your serpentine belt, make sure you check the condition of your pulleys too. A worn pulley bearing can quickly ruin a new belt. This Gates belt is a direct fit for many applications, so you can get your vehicle back on the road reliably.