Trailer Parts Superstore® offers a great selection of Automatic and Manual Slack Adjusters from SIRCO which are direct replacements for most popular manufacturers. Automatic slack adjuster features an adjust on stroke return, external bracket actuation, clearance sensing and a bolt on solid bracket. Manual slack adjuster features a zinc-dichromate finish, positive locking adjustment, heat treated alloy gears, threaded grease fittings, and a bi-directional body design.
Stock# 5446140 1-1/2" - 28 spline Meritor style automatic slack adjuster features an adjust on stroke return, external bracket actuation, clearance sensing and a bolt on solid bracket. The Sirco SA1074 adjuster has a 6" arm length. SUPPLIES LIMITED
Stock# 5446144 1-1/2" - 28 spline Haldex style automatic slack adjuster features an adjust on stroke return, external bracket actuation, clearance sensing and a bolt on solid bracket. The Sirco SA10212 adjuster has a 6" arm length. SUPPLIES LIMITED
Stock# 5446146 1-5/8" - 37 spline manual slack adjuster features a zinc-dichromate finish, positive locking adjustment, heat treated alloy gears, threaded grease fittings, and a bi-directional body design. The Sirco S2012A adjuster has a 6" hole. SUPPLIES LIMITED
Stock# 5446150 1-1/2" - 28 spline Haldex style automatic slack adjuster features an adjust on stroke return, external bracket actuation, clearance sensing and a bolt on solid bracket. The Sirco SA10101 adjuster has a 5-1/2" and 6-1/2" arm length. SUPPLIES LIMITED
Stock# 5446151 1-1/2" - 28 spline Bendix style automatic slack adjuster features an adjust on stroke return, external bracket actuation, clearance sensing and a bolt on solid bracket. The Sirco SA2174 adjuster has a 5-1/2" arm length. SUPPLIES LIMITED
