What does the STDX sizing mean for these bearings?

The STDX designation indicates that these main bearings are 0.001 inch undersize. This is a common specification used during engine rebuilds when the crankshaft journals have been machined to a smaller diameter.

What material are these bearings made from?

These bearings feature a high-performance overlay material applied over a strong steel backing. This combination is designed to provide durability and withstand the demands of diesel engine operation.

Are these bearings a direct replacement for all Cummins 6B engines?

This set is designed for Cummins 6B Series engines. However, the STDX sizing is specific, so it's important to verify your crankshaft journal dimensions to ensure this 0.001 inch undersize bearing set is appropriate for your rebuild project.

King Engine Bearings Cummins Main Bearing Set MB7009GPCSTDX

Name: King Engine Bearings Cummins 6B Series (Size STDX) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-cummins-6b-series-size-stdx-main-beari-t14-432589
Price: 392.97 USD
Availability: BackOrder

King Engine Bearings Cummins 6B Series (Size STDX) Main Bearing Set

$392.97

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

King Engine Bearings Cummins 6B Series (Size STDX) Main Bearing Set. Built for durability and performance.

Key Features

Fits Cummins 6B Series engines.
Main bearing set with STDX sizing, which is 0.001 inch undersize.
Features a high-performance overlay material for durability.
Strong steel backing supports the bearing structure.
Designed for reduced friction and proper oil flow in diesel engines.

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Product Details

The STDX designation on these King Engine Bearings main bearing set means they are 0.001 inch undersize, a common requirement when rebuilding or reconditioning an engine block. This set is specifically made for Cummins 6B Series engines, ensuring a precise fit for critical internal components. When you're working on the heart of your engine, using well-built bearings like these is essential for proper oil flow and reduced friction.

King Engine Bearings uses a high-performance overlay material that's designed to withstand the pressures and temperatures found in heavy-duty diesel applications. This overlay, combined with a strong steel backing, creates a bearing that can handle the demanding nature of a Cummins 6B. The STDX sizing is important because it allows for fine-tuning clearances during an engine rebuild, especially if the crankshaft journals have been ground undersize. This attention to detail in sizing and material choice helps ensure your engine runs smoothly and lasts longer.

If you're rebuilding your Cummins 6B, this main bearing set is a solid option. Make sure to check your crankshaft journal dimensions to confirm the STDX (0.001 inch undersize) is the correct size for your specific rebuild project. Proper installation according to the manufacturer's guidelines is key to achieving the expected performance and longevity from these bearings.