WG9100340057 right rear brake slack adjuster is an important component of Sinotruk Howo heavy truck drum brake system. Mounted on the rear axle brake camshaft, it automatically or manually compensates the clearance between brake shoe and brake drum when friction lining wears down. It keeps braking clearance within standard range to maintain stable braking force and shorten braking response time. Made of high-strength alloy steel with professional heat treatment and precision gear processing, it has high rigidity, wear resistance and anti-fatigue performance, adapting to heavy load and frequent braking conditions. Each adjustment arm undergoes torque test, tooth precision inspection and fatigue test before delivery to avoid jamming, tooth skipping and braking failure. It is a necessary replacement spare part for rear wheel brake overhaul. We maintain sufficient inventory and stable bulk supply for repair workshops, fleet operators, auto spare parts dealers and global cross-border export customers.