Lil' Red Barn Toggle Search Account Checkout Cart Home Parts & Tools Electrical Filters Fuel System Parts Tractor Parts 4-Stroke Engines Chainsaws Hedge Trimmers Leaf Blowers Safety Apparel Tools and Testers Service Manuals Briggs and Stratton Canadian Dolmar Echo Homelite Husqvarna Jonsered Kohler Makita McCulloch Onan Partner Pioneer Poulan Information Chain Reference Chart Chainsaw Chain Info - Maintenance & Safety Manual Testing Information and Diagrams for 2-Cycle Engines Watch How To Videos Contact Us Account Search site Submit search Nav Menu 2 Nav Menu 3 Nav Menu 4 Nav Menu 5 Nav Menu 6 Nav Menu 7 Nav Menu 8 Home > Parts & Tools > Chainsaws > Stihl > Stihl MS 391 > STIHL MS391 REPLACEMENT PISTON 49MM, REPLACES PART # 1140 030 2003 Our Price: $29.95 Product Code: SHPKMS391-49MM Qty: Description Suitable, high quality replacement STIHL MS391 REPLACEMENT PISTON 49MM, REPLACES PART # 1140 030 2003 Related Products... STIHL 036 REPLACEMENT BAR & CHAIN COMBO, 3/8", .063"NEW STIHL REPLACEMENT AIR FILTER BEARINGS & SEALS FIT STIHL MS311 MS391 MS291 MS271 MS280CHAINSAWS 20" OREGON PROLITE BAR AND CHAIN COMBO Our Price: $44.95 Add Our Price: $12.95 Add Our Price: $19.95 Add Our Price: $64.95 Add STIHL BAR NUT, REPLACES STIHL PART # 0000-955-0801 24" REPLACEMENT PRO CHAIN, .058" 3/8" OREGON 72DP PROFESSONAL SAW CHAIN, FITS 20" BAR NIB New cylinder & piston kit fits Stihl MS391 49mm 1140-020-1204, Nikasil, USA Ship Our Price: $2.50 Add Our Price: $26.95 Add Our Price: $18.95 Add Our Price: $139.95 Add Share your knowledge of this product with other customers... Be the first to write a review AIR FILTER REPLACES 63589, NEW $9.99 STIHL CLUTCH, REPLACES STIHL PART # 1111-160-2003 $19.95 18" CHAIN 66DL 3/8 FIT STIHL 031 032 034 036 041 038 039 MS310 MS311 MS390 MS391 $18.95 STIHL 026, 026PRO, MS260, MS260 PRO, 024, 024 SUPER $19.95 STIHL REPLACEMENT FUEL TANK. REPLACES PART #1121-350-0829 $59.95 Husqvarna 45 Piston Assembly 42mm $29.95 CYLINDER JUG BASE GASKET FITS STIHL 028 026 031 030 030 024 MS260 1118-029-2306 $6.95