Genuine Midland Haldex Valve Spring brake parts P/N: 65439X, ready to ship worldwide! Call us with any questions.A refundable core charge of $42.00 applies to this item and will be collected at checkout. The core charge is refunded upon receipt of your returned core, subject to its condition; customer is responsible for return shipping. Call us at (877) 776-4600 for details.A factory handling fee of $25.00 per unit is added at checkout.FeaturesRemanufactured Bendix SR-5 with Anti-CompoundingMeets FMVSS-121 requirements.Used on trailers with dual air brake systems.Permits the use of a single reservoir on the trailer.Tech SpecsSupply (1): 1/4″Delivery (4): 3/8″Reservoir (1): 1/2″Service (2): 1/4″Additional InformationAvailable CoreFree, order part number 65439RX.Repair kit not available.