ACL Rod Bearing STD Set 6B1584H-STD Fits BMW N54B30 N55B30 S55B30 3.0L Inline For Sale - New and Used

ACL Rod Bearing STD Set 6B1584H-STD Fits BMW N54B30 N55B30 S55B30 3.0L Inline
Part #6B1584H-STD
ACL Fitment

• BMW N54B30 - BMW X6 E71 / BMW Z4 E89
• BMW N55B30
• BMW S55B30

ACL Specs

• Half Type: Upper & lower
• Material: F781
• Min. Std Shaft Size: 49,973 mm / 1.9674 in
• Max. Std Shaft Size: 49,993 mm / 1.9682 in
• Min. Std Tunnel Size: 53,6 mm / 2.1102 in
• Max. Std Tunnel Size: 53,616 mm / 2.1109 in
• Max Wall at Crown: 1,793 mm / 0.0706 in
• Max Overall Length : 17,55 mm / 0.6909 in
• Bearing Usage: Performance
• Engine Crankshaft Undersize (in.): Stock
• Engine Crankshaft Undersize (mm): Stock
• Bearing Material: Tri-metal, copper-lead alloy
• Dowel Pin Hole: No
• Narrow Bearing: No
• Quantity: Sold as a set of 6.
• Notes: Extra notch relief

ACL Overview

• High strength overlay plate with reduced thickness for improved fatigue properties
• Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing.
• Increased crush for improved bearing retention
• Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing.
• Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films.
• 3/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings.
• Tight consistent wall tolerances to help you maintain consistent clearances.
• Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.

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