A-B1590535-AI ADJUSTER-ROCKER ARM

One New Aftermarket Replacement Rocker Arm Adjuster Fits Briggs & Fits Stratton Engines

This aftermarket replacement rocker arm adjuster (590535) fits a wide range of Fits Briggs & Fits Stratton small engines used in lawn mowers, portable generators, and pressure washers. The rocker arm adjuster includes the nut and threaded set screw and is the component responsible for maintaining proper valve clearance (valve lash) in the engine's valvetrain. Correct rocker arm adjustment is essential for reliable starting, smooth running, and preventing premature wear on valves and related components.

Compatible Equipment Types

Fits Briggs & Fits Stratton Engines: Fits a broad range of Fits Briggs & Fits Stratton OHV small engines, including the 08P502 engine series (08P502-0002-H1 through 08P502-0062-H1 and additional variants). Used in equipment such as walk-behind lawn mowers, riding mowers, portable generators (including 0630-0, 1033-0, 1150-0, 1150-1 and others), and pressure washers. Verify fitment using your engine model and type number before ordering. Compatible equipment brands include Fits Briggs & Fits Stratton, Fits Craftsman, MTD, and Fits Poulan.

Replaces Part Number(s):

590535, 590536, B1590535, A-B1590535-AI

New aftermarket replacement part - not remanufactured, not used.