Fuel Drain Valve$29.47 Fuel Drain Valve. An alternate part number for this fuel drain valve is F391-18. 1 in stock Fuel Drain Valve quantity Add to cart Like Tweet Pin it SKU: SA18 Category: Fuel Tags: Drain, Fuel, Valve Additional information Additional information Weight 1 lbs Dimensions 9 × 7 × 1 in Brand Diamond, Mooney, Piper, Other Related products $3.30 DiamondFuel O Ring Add to cart $58.24 Fuel Injector Nozzle Add to cart $2,142.50 Diamond66″ Fuel Probe Transducer, with Wiring Read more $1.28 Diamond, Mooney, Piper, OtherFuel Injection Washer Add to cart