Bronco AT-09434 Crank Main Bearing Bushing

Replacement Main Bearing for Polaris 570 engines

Sold as part of the crankcase half from OEM

5mm oil hole

ID: 41.2mm
OD: 46mm
Depth: 20.1mm

ALSN20CU

The Bronco AT-09434 Crank Main Bearing Bushing is designed to support smooth crankshaft operation in compatible engine applications. This replacement component helps maintain proper alignment between the crankshaft and connecting components while reducing friction at the bearing surface.

Manufactured for dependable service, the Bronco crank main bearing bushing is suited for repair, maintenance, and restoration work where a properly fitted bearing component is required. Its durable construction supports consistent performance under normal operating conditions and helps protect related engine parts from unnecessary wear.

Use the Bronco AT-09434 as a replacement for a worn or damaged crank main bearing bushing. Confirm application and fitment specifications before installation to ensure compatibility with the intended engine or equipment. Professional installation and appropriate lubrication are recommended for reliable service life.

Features:

• Brand: Bronco
• Part Number: AT-09434
• Product Type: Crank main bearing bushing
• Application: Supports crankshaft alignment and smooth engine operation
• Use: Suitable for replacement, repair, maintenance, and restoration applications
• Unit of Measure: Each