ACL Conrod Bearing Set STD – BMW N63/S63 Engines – 8B1578H-STD

The ACL Race Series Conrod Bearing Set (STD) is engineered for BMW N63 and S63 performance engines, offering exceptional reliability under extreme conditions. Built with ACL’s proven trimetal design, these bearings deliver high fatigue strength, oil film stability, and consistent clearances, making them ideal for both street and track applications.

Key Features

• Standard (STD) size conrod bearing set

• Trimetal construction with strengthened overlay for improved fatigue resistance

• Suits BMW N63B44 and S63B44 engines from March 2011 onward

• Each shell includes two locating notches for secure fitment

• Tight tolerances ensure oil film stability and long service life

• Designed for high-RPM and high-load applications

Technical Specifications

• Sizes Available: STD, .025, .25

• Tunnel (housing) diameter: 57.600 – 57.616 mm

• Shaft diameter: 53.971 – 53.990 mm

• Max Wall Thickness: 1.794 mm

• Max Length: 15 mm

• Half Type: Identical halves

• Weight: 0.32 kg

• Note: Suits engines from March 2011 onward

Fitment / Applications
This ACL Race Conrod Bearing Set is compatible with the following BMW models and engines:

• BMW 5 Series (F10, G30, F90) – N63B44 / S63B44 (550i, M550i, M5, M5 Competition, M5 CS)

• BMW 6 Series (F12, F13, F06) – N63B44 / S63B44 (650i, M6, M6 Competition)

• BMW 7 Series (F01–F04, G11, G12) – N63B44 (750i, 750Li, ActiveHybrid 7)

• BMW 8 Series (G14, G15, G16, F91, F92, F93) – S63B44 (M8, M8 Competition)

• BMW X5 (E70, F15, G05) – N63B44 / S63B44 (xDrive50i, M, M Competition)

• BMW X6 (E71, F16, G06) – N63B44 / S63B44 (xDrive50i, M, M Competition, ActiveHybrid)