Product Overview
The WAR801074 is a heavy-duty automatic slack adjuster built for commercial air-brake systems requiring a 1.5″ diameter (28-spline) camshaft interface and a 6″ straight lever arm. Engineered for trucks, trailers, and vocational equipment, this adjuster self-compensates brake lining wear to maintain optimal shoe-to-drum clearance, reduce maintenance, and extend lining life.
Constructed with rugged steel housing and corrosion-resistant finish, the WAR801074 delivers reliable performance under harsh conditions and meets the fitment standards of top OEMs. It’s a direct fit for standard Meritor-style assemblies and replaces the common Meritor part R801074.
REPLACES: 801074P, SA1074, M-4047, 139.2830, WAR801075, S-23559, A143275J1154S, R801074, R803112, 801074, 05-362, S-23559
