DORMAN 47128 PCV Hose: Automotive. Buy DORMAN 47128 PCV Hose: PCV Valves - ✓ FREE DELIVERY possible on eligible purchases. Constructed of high quality materials for long lasting use 。 Direct replacement for a proper fit every time 。 Easy to install 。 Manufactured to strict engineering quality standards 。 OE Number: 4854265 。 PCV Hoses allow crankcase pressure to escape the engine in a controlled manor. With 's PCV Valve Hoses you can replace just the hose, saving time, money and labor. 。 。 。, without the expense and hassle of installing a complete PCV Hose Assembly.