Product Description

SHIMANO 1024M WORM SHAFT (BNT5501)

Restore Precision Level Wind Oscillation

The Shimano 1024M Worm Shaft (BNT5501) is a genuine OEM replacement oscillation gear engineered for the Shimano Tranx 300 series of baitcasting reels. This critical component drives the line guide pawl, ensuring your line is distributed evenly across the spool during retrieval.

If your level wind is "sticking" on one side, making grinding noises, or if the grooves on your current shaft are worn or burred, replacing the worm shaft is essential. Installing this authentic Shimano part restores the smooth, consistent line lay required for the heavy-duty applications the Tranx series is built for, protecting your line and improving casting distance.

Product Specifications

• Part Name: Worm Shaft (Oscillation Gear)

• Manufacturer: Shimano

• Part Number (MPN): BNT5501

• Schematic Location Code: 1024M

• Material: Surface-Hardened Alloy / Stainless Steel

• Installation Position: Level Wind Assembly (Front Reel Housing)

Compatible Models

This part is specifically designed for the 300 size of the Tranx A generation.

• Shimano Tranx 300 Series (Right Hand):

  • TRX 300 A

  • TRX 300HG A (High Gear)

• Shimano Tranx 301 Series (Left Hand):

  • TRX 301 A

  • TRX 301HG A (High Gear)

Note: This worm shaft is NOT compatible with the larger Tranx 400 series (which uses part BNT5612/10RUS) or older Tranx 500HG models.

Installation & Reference

To ensure this is the correct part for your reel, please cross-reference the part number BNT5501 or the schematic key 1024M with your reel's service diagram.

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

• Alternate Part Number: BNT5501

Installation Tip: The worm shaft functions in direct contact with the Line Guide Pawl (often part BNT5383 or similar). It is highly recommended to inspect or replace the pawl when installing a new worm shaft, as using a worn pawl can immediately damage the new shaft's grooves. Apply a light coat of reel grease or oil to the shaft grooves upon installation.