Flexplate 1971 and later 383-400-440 w/cast Crank w/A-727 externaly balanced/extern gewuchtet Mit kleinem und großen Lochkreis. Brand: B&M Manufacturer's Part Number: 10237 Part Type: Flexplates Product Line: B&M Flexplates Rear Main Seal Style: 2-piece Engine Balance: External Flexplate Material: Steel Safety Rating: SFI 29.1 Quantity: Sold individually. Notes: Designed for cast iron crankshafts. Convertor Bolt Circle: 10in. & 11in. B&M flexplates are ideal for 6,000+ rpm usage. They have precision-stamped centers and a rust-resistant, gold iridited finish. Some units are SFI-approved and are NHRA/IHRA-legal for all classes.