A-B1807623-AI ADJUSTER-ROCKER ARMOne New Aftermarket Replacement Rocker Arm Adjuster Fits Briggs and Stratton Small Engines This rocker arm adjuster (also called an adjuster rocker arm) is a valvetrain component used in Fits Briggs and Stratton (B&S) overhead valve (OHV) small gasoline engines. It controls the clearance between the rocker arm and valve stem, ensuring precise valve timing and smooth engine operation. Worn or damaged adjusters can cause engine noise, rough running, and