What is the STDX size for these bearings?

The STDX size indicates that these bearings are 0.001 inch larger than standard. This sizing is often used during engine rebuilds to achieve optimal clearances, especially if the crankshaft journals have been machined.

What is the pmax black material used in these bearings?

The pmax black material is part of King Engine Bearings' XP racing line. It's designed for high-performance applications, offering improved durability and friction reduction compared to standard bearing materials.

Are these bearings suitable for a daily driver or only for racing?

While these are part of King's racing line, the pmax black material offers excellent durability and performance benefits that can also be advantageous in a high-performance daily driver. They are a well-built option for any engine build focused on reliability and performance.

Specifications

Brand: King Engine Bearings
Part #: CR4042XPSTDX
UPC: 611500542572

King Engine Bearings BMW M40/M42/M43/M44 1.6L/1.8L/1.9L (Size STDX) Connecting Rod Bearing Set

Name: King Engine Bearings BMW M40/M42/M43/M44 1.6L/1.8L/1.9L (Size STDX) Connecting Rod Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-bmw-m40-m42-m43-m44-1-6l-1-8l-1-9l-siz-t14-769538
Price: 89.46 USD
Availability: BackOrder

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Fits 1991-1995 BMW 318i. King Engine Bearings connecting rod bearing set for M40/M42/M43/M44 engines. STDX size.

Key Features

Fits 1991-1995 BMW 318i, 1991-1995 BMW 318is, 1995 BMW 318ti, and 1996-1998 BMW Z3.
Designed for BMW M40, M42, M43, and M44 engines with 1.6L, 1.8L, and 1.9L displacements.
This is a connecting rod bearing set, essential for reducing friction between the connecting rod and crankshaft.
Features King's pmax black material, part of their XP racing line for improved performance.
The STDX size means these bearings are 0.001 inch larger than standard, suitable for engine rebuilds.
This set is an alternative to the CR4042CP race bearings.

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About this part

Product Details

If you're rebuilding the engine in your 1991-1995 BMW 318i, 318is, 318ti, or 1996-1998 Z3, you'll need reliable connecting rod bearings. These bearings are crucial for smooth operation, as they sit between the connecting rod and the crankshaft, reducing friction and wear. This set from King Engine Bearings is designed for the M40, M42, M43, and M44 engines found in these vehicles.

This particular set is from King's XP series, featuring their pmax black material. This is a racing line bearing that offers improved performance over standard bearings, making it a solid option for engine builds where durability and performance are key. The STDX size indicates these bearings are 0.001 inch larger than standard, which can be useful for engines that have seen some wear or for fine-tuning clearances during an engine rebuild. They are an alternative to the CR4042CP race bearings, offering a different material option for your build.