Original quality piston ring 06L198151 for B9

Original quality piston ring set OE number 06L198151 is exclusively produced to match Audi A4 B9 models equipped with supporting engine codes. All ring width, opening clearance and surface treatment parameters fully follow OEM production standards, which enables seamless direct replacement during engine overhaul without manual filing or gap adjustment on site. The three-piece piston ring group consists of top compression ring, second compression ring and oil control ring with different functional designs. The upper compression ring adopts hard chromium spraying process on the surface, featuring ultra-high hardness and strong scratch resistance, which can resist long-term friction and high-temperature erosion inside the cylinder to maintain stable gas tightness and prevent combustion gas leakage into the crankcase. The secondary ring adopts special anti-carbon deposition structural design, which can scrape off excess oil on the cylinder wall while avoiding carbon accumulation to keep the combustion chamber clean. The oil control ring is equipped with dense spiral spring inside, with uniform oil scraping force all around the cylinder wall, effectively scraping down excess lubricating oil and greatly alleviating the common burning oil failure of Audi B9 vehicles. When the original piston rings lose elasticity or wear thin after long mileage, the engine will show obvious faults such as blue exhaust smoke, rising oil consumption, unstable idle speed, decreased power and abnormal engine knocking sound. Replacing this full set of standard piston rings can restore the engine’s original compression ratio and oil control performance, completely eliminate the above abnormal driving problems. Every batch of piston rings undergoes strict factory tests including hardness test, opening gap fatigue cycle test and high-temperature oil immersion aging test, all inspection indicators are consistent with OEM quality control standards to ensure uniform and reliable quality of each shipment. We provide one-stop bulk procurement service for global Audi professional repair shops and auto parts wholesalers, sufficient spot inventory is stored all year round with flexible minimum order quantity, and complete long-term after-sales warranty is provided to support continuous large-volume supply demand for overseas merchants.