3807AX Brake Drum 16.5" x 8.62" for heavy-duty trucks
Product Overview
3807AX balanced heavy-duty brake drum is aftermarket OE equivalent component sized 16.5" × 8.62", designed for North American Class 8 semi-trailers, dump trucks and long-haul tractors with inboard mount rear axle systems. Reinforced high-density grey cast iron delivers superior heat dissipation, crack resistance and stable braking under heavy load & continuous downhill braking.

Key Specifications
· Specification: Part No.3807AX, Brake Diameter 16.5", Lining Width 8.62", inboard mounting flange, dynamic balanced
· Material: Thick reinforced grey cast iron; full electrophoretic black anti-rust coating on all outer surfaces
· Cross Reference: Matches Meritor, Gunite, Webb rear trailer axle OEM interchange numbers
· Application: Rear drive & trailer axles for Kenworth, Peterbilt, Freightliner, Mack, Volvo heavy-duty trucks, container/dump/refuse trailers
· Advantage: CNC ultra-precise machined inner friction surface to reduce vibration and brake noise; thick outer cooling rib structure minimizes heat fade; factory dynamic balancing, OE identical dimension for direct bolt-on installation without grinding
· Packing Option: Single drum neutral export carton, bulk pallet shipment for FCL orders, custom OEM private label packaging supported
FAQs
Q1: Is 3807AX for front steer or rear trailer axle?
A: It is inboard mount design exclusively for heavy truck rear drive and semi-trailer axles, not fit front steer axles.
Q2: Does every drum pass dynamic balance inspection?
A: All 3807AX drums go through strict dynamic balance correction to eliminate high-speed brake shake and abnormal noise.
Q3: Can we mix this drum with brake shoes and other brake drums in one container?
A: Mixed loading of various brake parts is acceptable for full container wholesale orders.
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