Bendix 289714N is the genuine QR-1C quick release valve used on heavy-duty air brake systems to speed brake release by exhausting service-line air locally. The valve has a 1/4" NPT supply and balance, twin 3/8" NPT delivery ports, and a 3/8" NPT exhaust, with 0 PSI crack pressure and a 3.4" overall width. It supersedes the early non-N suffix 289714 and is rebuildable with kit 260519. Specifications Manufacturer Bendix Part Number 289714N Part Type Quick release valve, QR-1C Supply / Balance Port 1/4" NPT Delivery Ports 3/8" NPT (two) Exhaust Port 3/8" NPT Crack Pressure 0 PSI Overall Width 3.4 in Weight ~0.94 lb (0.43 kg) Repair Kit 260519 Supersedes 289714 VMRS Code 13-010-008 Cross References This part replaces or is equivalent to the following part numbers: Bendix: 289714N (supersedes 289714) Meritor: R955289714N, R955289714X Haldex: KN32041 Freightliner: A12-14980-000 Navistar: BX289714N Velvac: 034012 Automann: 170.289714 Euclid: E-BN289714N Newstar: S-9749 Torque Parts: TR289714 World American: WA289714 Predator HD: 289714-PHD Applications The Bendix QR-1C is a service-side quick release valve used across nearly all Class 6–8 air-braked tractors and straight trucks built since the 1980s. Representative platforms include: Freightliner Cascadia, Columbia, Century, Coronado, M2, Classic Kenworth T680, T880, T800, W900, T660, T370 Peterbilt 579, 389, 388, 386, 379, 378, 367 Volvo VNL, VNR, VNM, VHD Mack Anthem, Pinnacle, Granite, CHU, CXU International / Navistar LT, LoneStar, ProStar, 9900, 9400 Air-braked trailers using Meritor / Bendix foundations Verify port sizes (1/4" supply, 3/8" delivery) and mounting orientation before installation. Replace mounting gaskets and apply thread sealant on NPT fittings.
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