Product Description

SHIMANO 1057S SPACER (B) (BNT0664)

Maintain Precise Handle & Drag Spacing

The Shimano 1057S Spacer (B) (BNT0664) is a small but critical genuine OEM shim washer used in the drive shaft assembly of many classic Shimano baitcasting reels. Typically located on the drive shaft just below the handle or star drag assembly, this spacer provides the necessary clearance to prevent components from binding against the reel body or each other.

If this spacer is lost during maintenance, you may experience "rubbing" friction when turning the handle, or your star drag may not tighten down correctly. Ensuring this shim is in place is vital for the smooth mechanical operation of your reel's drive train.

Product Specifications

• Part Name: Spacer (B) / Drive Shaft Washer

• Manufacturer: Shimano

• Part Number (MPN): BNT0664

• Schematic Code: 1057S

• Material: Fiber

• Installation Position: Drive Shaft (Handle Side)

Compatible Models

This is a legacy component found in many of Shimano's most popular "B" series and early 2000s baitcasters.

• Shimano Curado B Series (The "Green" Curado):

  • CU 200 B

  • CU 200 B5

  • CU 200 BSF (Super Free)

• Shimano Calcutta Series:

  • CT 50 / 51

  • CT 100 / 101, CT 100 B

  • CT 200 / 201, CT 200 B

  • CT 400 / 400 B

• Shimano Chronarch Series:

  • CH 100 SF, CH 100 MG

• Shimano Citica Series:

  • CI 200 B

Installation & Reference

To ensure this is the correct spacer for your reel, please cross-reference the part number BNT0664 or the schematic key 1057S with your reel's service diagram.

• Schematic Diagrams: For detailed PDF schematics and part location verification, please visit www.reelschematic.com.

• Alternate Part Number: BNT0664

Installation Tip: This spacer is often paired with another washer or works in conjunction with the Drive Shaft Retainer. Pay close attention to the order of washers when disassembling your handle stack; placing this spacer in the wrong order can cause the drag star to lock up or sit too high.