What does the 'STDX' designation mean?

The 'STDX' designation refers to the specific size and material composition of this main bearing set. It indicates that the bearings are 0.010 inch undersize and feature King Engine Bearings' specialized XP overlay material.

What is the purpose of main bearings?

Main bearings are essential components in an engine's bottom end. They support the crankshaft within the engine block, allowing it to rotate smoothly while minimizing friction and wear between the crankshaft journals and the block.

When would I need an undersize bearing set like this?

An undersize bearing set, such as this 0.010 inch undersize set, is used when the crankshaft journals have been machined down to remove damage or wear. This allows the engine builder to restore proper bearing clearance.

King Engine Bearings Main Bearing Set MB4272XPSTDX

Name: King Engine Bearings Holden Alloytec 175/190 (Size STDX) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-holden-alloytec-175-190-size-stdx-main-t14-504896
Price: 119.48 USD
Availability: BackOrder

King Engine Bearings Holden Alloytec 175/190 (Size STDX) Main Bearing Set

$119.48

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 Holden Alloytec 175/190 (Size STDX) Main Bearing Set. This is a 0.010 inch undersize bearing set for Holden Alloytec 175/190 engines.

Key Features

This is a 0.010 inch undersize main bearing set.
Designed for Holden Alloytec 175/190 engines.
Features King Engine Bearings' XP overlay material for improved performance.
Helps reduce friction and wear on the crankshaft.

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Product Details

This is a King Engine Bearings Main Bearing Set, part number MB4272XPSTDX. It's specifically made for Holden Alloytec 175/190 engines and is a 0.010 inch undersize set, meaning it's intended for crankshafts that have been machined down by 0.010 inches during an engine rebuild. These bearings are crucial for supporting the rotating crankshaft within the engine block, reducing friction and wear.

King Engine Bearings uses a specialized overlay material in their XP bearings, which is designed to be more forgiving of crankshaft surface imperfections compared to standard bearings. This can be particularly helpful in performance applications or when dealing with engines that may have seen a lot of use. The STDX designation indicates the specific size and material composition for this set, ensuring it meets the requirements for the Holden Alloytec application. Proper installation is key; ensure your crankshaft journals are clean and within the specified tolerance for this 0.010 inch undersize set.