A-B1590394-AI VALVE-EXHAUST model-LD31248 Replaces Part Numbers: 139050

Replaces Part Numbers: 139050

690A (w/ Deluxe Seat)

Fits 12" Single

Important: This manifold fits only engines with engine serial number A4700001 and later that use a 2-piece manifold design

-Length - 52

A-B1590394-AI VALVE-EXHAUST model-LD31248 Replaces Part Numbers: 139050One New Aftermarket Replacement Exhaust Valve Fits Briggs and Stratton (B&S) Small Engines This exhaust valve replaces OEM part number 590394 and is designed for use in Fits Briggs and Stratton small engines found in lawn mowers, pressure washers, and generators. The exhaust valve controls the discharge of combustion gases from the cylinder, maintaining proper compression and engine efficiency. A worn or damaged exhaust valve can cause loss of power,