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... New cylinder & piston kit fits Stihl MS391 49mm 1140-020-1204, Nikasil, USA Ship Stihl 42" Replacement BAR & CHAIN COMBO 3/8" PITCH.063" NEW 20" REPLACEMENT BAR AND CHAIN COMBO, 3/8" .050" 72DL, FITS STIHL 031, 032, 034, 036, 046 066 044, MS461 STIHL REPLACEMENT TUNE UP KIT Our Price: $139.95 Add Our Price: $129.95 Add Our Price: $39.95 Add Our Price: $19.95 Add STIHL BAR NUT, REPLACES STIHL PART # 0000-955-0801 20" CHAIN 72DL 3/8" FIT HUSQVARNA 357XP 365 372XP 455 460 465 562XP 572XP 565 55 STIHL 038, 28" REPLACMENT BAR & CHAIN, 3/8", 91 DL NEW 24"/25" REPLACEMENT PRO CHAIN, 3/8", .063" GAUGE Our Price: $2.50 Add Our Price: $19.95 Add Our Price: $99.95 Add Our Price: $22.95 Add Share your knowledge of this product with other customers... Be the first to write a review REPLACEMENT CLUTCH, PART # 530014949, NEW $17.95 NEW VALVE KEEPERS RETAINERS FITS ONAN P216 P218 P220 # 110-3511, HE110-3511 $9.95 NEW 1" MUFFLER 275679 FITS KOHLER K301 K321 K482 K532 K582 K660 M10 M12 M14 M18 M20 $19.95 JONSERED REPLACEMENT SPROCKET, 3/8" PITCH, NEW $19.95