This newly released trailer control component covers part numbers C-48211, 1259855, 1339396 and 1450726. It acts as a core control spare part for truck trailer operation and linkage systems. It maintains flexible response and stable running performance during driving and braking. Made of premium sturdy raw materials, it features great anti-rust, wear-resistant and deformation-proof ability. It fully meets OEM standard dimensions, installs conveniently and is an ideal replacement for old or faulty trailer control parts