The Meritor R607178 is a right-hand S‑camshaft designed for 16½″ Xtralife (XL) trailer drum brake systems. Featuring a 1½″ diameter, 10‑spline journal, it’s precision-forged and induction-hardened with a 1 1/8″ hardened cam head, delivering reliable and durable braking performance in heavy-duty applications.
