M998 TURRET L.H. UPPER B PILLAR 12340342-3 NOS PART NUMBER: 12340342-3 NSN: 2540-01-477-3686 PART OF KIT 4710-01-333-5995 NOS E-40 M998 Turret Left-Hand Upper B-Pillar, Part Number 12340342-3, NSN 2540-01-477-3686. This OEM military left-hand upper B-pillar is designed for use on M998 Humvee vehicles equipped with turret systems and serves as a critical structural body component. The B-pillar provides support and reinforcement for the vehicle body structure while helping maintain alignment and integrity of the turret enclosure and associated body assemblies. This item is New Old Stock (NOS) military surplus and has never been installed. Manufactured to military specifications, this structural component is engineered for durability and dependable performance under demanding military operating conditions. It is ideal for military vehicle maintenance, restoration projects, turret conversions, accident repairs, and replacement of damaged, bent, corroded, or missing original equipment. Part Number 12340342-3 and NSN 2540-01-477-3686 are commonly searched by military maintenance facilities, government agencies, military vehicle collectors, and restoration specialists seeking genuine OEM M998 Humvee replacement parts. This component is also identified as part of Kit NSN 4710-01-333-5995. Using authentic military structural components helps ensure proper fit, body alignment, structural integrity, and long-term serviceability. Equipment Parts Sales has been supplying military surplus and OEM military vehicle parts for over 25 years. We stock thousands of NOS military vehicle components, including M998 Humvee, M1152 Humvee, MRAP, MaxxPro, M-ATV, FMTV, M939, M151, HEMTT, and 5-Ton truck parts ready for shipment. Our inventory includes turret components, body structures, B-pillars, mounting hardware, doors, body panels, and hard-to-find military vehicle replacement parts. Keywords: 12340342-3, 2540-01-477-3686, M998 turret B-pillar, Humvee left-hand upper B-pillar, M998 turret component, military vehicle structural component, OEM military body part, Humvee body structure, turret support component, military vehicle restoration part, military surplus vehicle parts, NOS military surplus parts, Humvee turret conversion parts, military vehicle maintenance parts.