Part Number: A 651 090 49 37 , A 651 090 57 37, A6510904937 , A6510905737, 651 090 49 37 , 651 090 57 37, 6510904937 , 6510905737 Feature: Easy to install, saves time and costs, and can be used directly. Made of high-quality materials, it ensures that the intake manifold can maintain stable performance in high temperature and high pressure environments, extending its service life. It can provide optimal valve timing at both high and low engine speeds, allowing the engine to perform better in various speed ranges, making the engine smoother and more torque rich at low speeds, and smoother and more powerful at high speeds. Adjust the length of the intake path according to the engine speed and optimize the intake efficiency under different operating conditions. Accelerate the increase in gas.
