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 > Echo > Echo CS 420 > ECHO CS-400, CS-370, CS-420 REPLACEMENT SPROCKET, 3/8" 6 TOOTH DRIVE, BEARING Alternative Views: Our Price: $17.95 Product Code: SP5083 Qty: Description A HIGH QUALITY REPLACEMENT ECHO CS-400, CS-370, CS-420 REPLACEMENT SPROCKET, 3/8" 6 TOOTH DRIVE, INCLUDES A FREE BEARING, REPLACES ECHO PART # A556000401 SHIPS FROM USA WITH A TRACKING NUMBER Related Products... CARVING SPROCKET FITS ECHO CS400, CS4100, CS420, CS4200, CS4400,CS4510,CS4600 ECHO CS-400, CS-370, CS-420 REPLACEMENT SPROCKET, .325" 7 TOOTH DRIVE, BEARING Our Price: $25.95 Add Our Price: $17.95 Add Average Customer Review: 5 of 5 Total Reviews: 1 Write a review. 0 of 0 people found the following review helpful: ECHO CS-400 REPLACEMENT SPROCKET May 28, 2025 Reviewer: PATRICK HORRAS from Fairfield, IA United States GREAT PRODUCT MORE DURABLE THAN OEM Was this review helpful to you? NEW MCCULLOCH AIR FILTER 85387 FITS SP70 80 81 PM850. CP70 850 805 $29.95 20" REPLACEMENT CHAINSAW CHAIN, 81DL .325 $24.95 HUSQVARNA AIR FILTER, REPLACES PART # 503447203,NEW $12.95 14" REPLACEMENT BAR & CHAIN 3/8" LP .043 $39.95 16" REPLACEMENT CHAINSAW CHAIN, 67DL .325 $19.95 Stihl 018 Piston and Cylinder Kit $49.95 OEM REPLACEMENT CARBURETOR REPLACES PART # 503283207 OR 503281803 $59.99 18" REPLACEMENT CHAINSAW CHAIN 72DL .325 $21.95 5/16"-24 BALL JOINT $11.99
ECHO CS-400 REPLACEMENT SPROCKET 
