Main Bearings - .030" Oversize - Set fits John Deere 2950 2955 4030 4050 AT21136

Aftermarket Main Bearing Set for John Deere Applications

This main bearing set is an aftermarket replacement supplied in a .030" oversize size. Main bearings support the crankshaft within the engine block, and an oversize set is typically selected when the crankshaft journals have been machined undersize to restore proper bearing clearance.

Product Details

• Reference Number: AT21136
• Size: .030" oversize
• Quantity: Set

Fitment & Compatibility

• Fits John Deere 2950
• Fits John Deere 2955
• Fits John Deere 4030
• Fits John Deere 4050

Frequently Asked Questions

Q: What does .030" oversize mean for a main bearing set? A: It indicates the bearings are sized for a crankshaft with journals ground .030" undersize. Confirm the required oversize against your crankshaft measurements before ordering.

Q: How do I verify this set fits my tractor? A: Check that your complete equipment model matches one listed here and that your engine requires reference number AT21136 in the .030" oversize.

This is an aftermarket replacement part. Confirm fitment before purchase.