MSD - Fits 351W with iron gear. Must be used with an MSD 6, 7 or 8-series ignition. 5 in ID - 10

5 in ID - 10 in Length - 400 lb/in Spring Rate - Steel - Blue Powder Coat - Each

375 in - Aluminum - Black Anodized - Sprint Car - Each

700 in Long - 0

Air Filter Element - Magnum FLOW Pro DRY S - Clamp-On - Conical - 8

MSD - Fits 351W with iron gear. Must be used with an MSD 6, 7 or 8-series ignition. 5 in ID - 10The steel shaft that spins the advance and reluctor receives a friction reducing coating plus is guided by a sealed ball bearing and long sintered bushing. This combination provides stable timing signals and spark delivery at any rpm. Triggering chores are handled by MSD's race proven, maintenance free magnetic pick up.