Product Description

Here is the detailed product description for the Shimano 10251 Clutch Guard (BNT5512).

SHIMANO 10251 CLUTCH GUARD (BNT5512)

Protect Your Clutch Mechanism

The Shimano 10251 Clutch Guard (Part No. BNT5512) is a genuine OEM protective component designed for the Shimano Tranx 300 and 400 "A" series baitcasting reels. Positioned internally within the frame assembly, this guard shields the delicate clutch pawl and cam linkage from debris and prevents the clutch springs from becoming dislodged during operation.

If this guard is cracked during maintenance or missing, your reel's free-spool engagement may become inconsistent, or internal components could be exposed to excessive contamination. Replace it with this factory-original part to ensure the long-term durability and reliability of your heavy-duty baitcaster.

Product Specifications

• Part Name: Clutch Guard

• Manufacturer: Shimano

• Part Number (MPN): BNT5512

• Schematic Code: 10251 (Varies by diagram version, often Key #5512)

• Material: High-Impact Composite / Plastic

• Installation Position: Internal Frame (Covers Clutch Cam/Pawl assembly)

Compatible Models

This part is engineered specifically for the Tranx A generation (released approx. 2016-2018) in the 300 and 400 sizes. It fits both left and right-handed models.

• Shimano Tranx 300 Series (A Model):

  • TRX 300 A

  • TRX 300HG A (16TRX300AHG)

  • TRX 301 A

  • TRX 301HG A

• Shimano Tranx 400 Series (A Model):

  • TRX 400 A

  • TRX 400HG A

  • TRX 401 A

  • TRX 401HG A

Note: This part is not compatible with the older Tranx 500HG or the newer Tranx 150/200 series.

Installation & Reference

To ensure this is the correct part for your reel, please cross-reference the part number BNT5512 or the schematic key 10251 (or 5512) with your reel's service diagram.

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

• Alternate Part Number: BNT5512

Installation Tip: This Clutch Guard is typically secured by a single screw (often part BNT5511). Be careful not to overtighten this screw, as it can crack the plastic guard. Ensure the guard sits flush against the frame and clears the moving clutch cam before reassembling the side plate.