Part Number: 66-3787
Material: Stainless Steel
Finish: Polished - Tumbled
This gearbox main shaft nut is a precision-made replacement for the original part, designed for use with BSA models featuring the 6-spring clutch. Often referred to as the clutch spring retaining nut, it is crafted to the original specifications with a 5/8" x 20 TPI thread, correct hex spanner size, and a cutout on one side for proper fitment.
Compatibility:
This nut is suitable for the following BSA models equipped with a six-spring clutch including:
A7, A10, B31, B32, B33, B34, M20, M21, M33 and Goldstar (DBD34)
While it may fit other models, please verify your part numbers before ordering to ensure compatibility.
Manufactured in England by CPC Engineering using advanced CNC machining, this nut is made from high-quality stainless steel and finished with a tumbled surface for durability and aesthetic appeal.
66-3787 - Gearbox Mainshaft Nut (6 spring)
- Brand: CPC Engineering
- Product Code: 66-3787
- Availability: In Stock
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£30.00
- Ex Tax: £25.00
Tags: Bsa, 66-3787, Gearbox, Main, shaft, Nut, mainshaft, 66, 3787, A7, A10, B31, B32, B33, B34, M20, M21, M33, dbd34, gold, star, goldstar, stainless, steel, uk, england, for, sale, parts, spares, clutch, spring, retaining, cpc, engineering