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... TOP SAW CHAIN SAW TOOL STIHL 056 SUPER 25" FOR BAR & CHAIN COMBO 3/8" 84 DL STIHL BAR NUT, REPLACES STIHL PART # 0000-955-0801 STIHL MS 310 REPLACEMENT 16" BAR & CHAIN COMBO 3/8 60dl Our Price: $19.95 Add Our Price: $64.95 Add Our Price: $2.50 Add Our Price: $35.95 Add STIHL REPLACEMENT TUNE UP KIT Stihl 42" Replacement BAR & CHAIN COMBO 3/8" PITCH.063" NEW 24"/25" REPLACEMENT PRO CHAIN, 3/8", .063" GAUGE 28" REPLACEMENT PRO CHAIN, .058" 3/8" Our Price: $19.95 Add Our Price: $129.95 Add Our Price: $22.95 Add Our Price: $26.95 Add Share your knowledge of this product with other customers... Be the first to write a review 1 NEW PIONEER CRANKCASE, GASKET FITS PIONEER P20 P21 P24 P25 P26 P28 $19.95 POP UP PISTON KIT FITS ECHO CS-590, CS600P, 45MM KIT EXTRA COMPRESSION & POWER $37.95 1 BRAND NEW CONNECTING ROD FITS KOHLER K532, K582 .STANDARD 48 067 12 $69.95 POP UP PISTON KIT STIHL 044, MS440 10MM WRIST PIN, 50MM KIT EXTRA COMPRESSION $37.95 AIR FILTERS [2] FOR CHAINSAWS 69141 $4.99 STIHL CYLINDER AND PISTON KIT, 52MM REPLACES STIHL PART # 1122-020-1203 $119.95