One New Aftermarket Replacement Horizontal Exhaust Muffler for Wisconsin Robbins EnginesThis horizontal exhaust muffler is a direct aftermarket replacement for Wisconsin Robbins (Wisconsin) engines used in a wide range of agricultural equipment, power units, and Fits John Deere (Fits JD) powered-equipment applications. It features a swedge fit inlet and mounts horizontally to the exhaust port on compatible 2-cylinder and 4-cylinder Wisconsin engine models.Specifications Mount Style: Horizontal Inlet Type: Swedge Fit Inlet O.D. (Dim A): 1.640" Shell O.D. (Dim B): 4.250" Outlet Length (Dim C): 4.250" Overall Length (Dim D): 20" Weight: 4.60 lbs Compatible ModelsWisconsin Robbins Engines (2-Cylinder): A, T, THD, THDM, TJDWisconsin Robbins Engines (4-Cylinder): V, VEE, VE4, VF4, VF4D, VH4, VH4DFits John Deere (Fits JD): Equipment powered by compatible Wisconsin Robbins engines listed above. Fits John Deere catalogs this part as A-WD98.Replaces Part Number(s):WD98, WD-98, WIS-4Aftermarket Interchange NumbersA-WD98 (Fits John Deere catalog number); WIS-4 (Stanley Muffler cross-reference)New aftermarket replacement part - not remanufactured, not used.