ACL 6B1510HX-STD Race Series Rod Bearings +0.001" for 2016-24 BMW/Toyota B58B30

Vehicle Fitment

• 2016-2024 BMW 340i / 440i / 540i / M40i (B58B30 inline-6)
• 2018-2024 BMW X3 / X4 / Z4 / 440i xDrive with B58B30
• 2020-2024 Toyota GR Supra (A90/A91) 3.0 B58B30 & B58B30O1 turbo

Features

• ACL Race Series performance connecting rod bearing set engineered for high-RPM and high-load conditions
• Standard journal size (STD) with extra +0.001" (≈0.025 mm) oil clearance (HX) for robust lubrication film
• Tri-metal bearing construction with hardened steel backing for strength and fatigue resistance
• High-strength overlay plate with reduced thickness for improved fatigue properties
• Increased crush for superior bearing retention in the housing
• Elimination of flash plating for better heat transfer and housing grip
• Increased eccentricity aids hydrodynamic oil film formation at elevated RPM
• Tight consistent wall tolerances help maintain reliable clearances
• Enlarged ID chamfers where required to accommodate crank fillet radii

Specifications

• Part Number: 6B1510HX-STD
• Brand: ACL
• Series: Race Series Connecting Rod Bearings
• Size: Standard journal (STD) with extra +0.001" clearance (HX)
• Material: Tri-metal alloy with hardened steel backs
• Bearing Type: Rod bearings - upper & lower halves
• Engine Fitment: BMW/Toyota 3.0 L turbo B58B30 inline-6
• Fitment Years: 2016-2024
• Compatibility: Factory and performance-tuned applications

Included Components

• 6x Connecting rod bearing halves - standard journal size with +0.001" extra clearance

Product Description

The **ACL 6B1510HX-STD Race Series Rod Bearing Set** is a premium performance engine component engineered for **BMW and Toyota turbocharged B58B30 3.0 L inline-6 engines** - including models such as BMW 340i, 440i, 540i, X3/X4 with B58 powerplants, and Toyota GR Supra (A90/A91) from **2016 through 2024**. These bearings are part of ACL's Race Series family, built with **tri-metal construction and hardened steel backing** to handle higher RPM, heat, and load conditions trusted by racers and tuners alike.

The "HX" designation indicates an **extra +0.001" (≈0.025 mm) oil clearance** over stock-sized bearings, promoting a stronger hydrodynamic oil film and improved lubrication under demanding performance use. ACL Race Series features such as increased crush, elimination of flash plating for better heat transfer, and precise manufacturing tolerances make this set ideal for high-output street engines, performance rebuilds, and track applications where durability and reliability matter.