Fit For VW Golf Fit For Jetta Fit For EOS Fit For Tiguan A3 1.4T Crankcase Breather Hose+Check Valve Durable Construction: Manufactured with stable materials and craftsmanship, ensuring durability for stable operation under various driving conditions over an extended period. materials------This product is made of ABS material, with maximum durability and long service life, very durable This essential component promotes longer engine life by continuously extracting abrasive combustion particles before they can circulate through the oil and wear down bearings and cylinder walls. By eliminating excessive crankcase pressure, this valve helps improve piston ring sealing and can contribute to a marginal but noticeable increase in overall engine efficiency and fuel economy., Manufacturer: KJfghDH