Up for sale is a genuine Caterpillar 4W-5700 Engine Main Bearing . This internal engine component provides the bearing surface that supports and positions the crankshaft within the engine block while allowing smooth crankshaft rotation under operating loads. The 4W-5700 is a 41.65 mm-wide main bearing and is specifically configured with a standard inside diameter and approximately 0.63 mm / 0.025-inch oversize outside diameter, making correct bearing-size verification important before installation.

• Item is in new old stock condition, bearing may have minor surface rust.

Features & Specifications

• Brand: Caterpillar / CAT
• Part Number: 4W-5700 / 4W5700
• NSN: 3120-01-321-3736
• Item: Engine Main Bearing
• Type: Crankshaft Main Bearing
• Bearing Width: 41.65 mm / 1.64"
• Sizing: Standard ID / 0.63 mm (0.025") Oversize OD
• Construction: Steel-backed bearing
• Bearing Materials: Steel-backed aluminum / steel-backed copper-lead / copper alloy
• CAT Listed Length: 6.0" / 152.4 mm
• CAT Listed Width: 144.78 mm / 5.70"
• CAT Listed Height: 3.6" / 91.44 mm

Compatibility

CAT's official catalog lists a very broad application range , including:

• 3406 / 3406B / 3406C / 3406E
• 3408 / 3408B / 3408C
• 3412 / 3412C / 3412D / 3412E
• C15 / C-15
• C16 / C-16
• C18 / C-18
• C27
• C30
• C32

A2-5