Panewki korbowodowe ACL Race 6B1584H-.50 BMW N55B30A - ACL-6B1584H-.50 - The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings. Designed to withstand higher RPM conditions, ACL Race Series Engine Bearings are available for many of the popular 4, 6 & 8 cylinder applications and feature: 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. Tech. Info Tunnel [mm]: 53.600 / 53.616 Shaft [mm]: 49.973 / 49.993 Max. Wall: 1.793 Max. Length: 17.55 Half type: Upper & lower Weight [KG]: 0.3 Applications Make Model Engine Variant BMW 1 (F20) N55B30A M 135 i x Drive BMW 1 (F21) N55B30A M 135 i x Drive BMW 1 Convertible (E88) N54B30A / N55B30A 135 i BMW 1 coupe (E82) N54B30A / N55B30A  135 i / M BMW 2 Convertible (F23) N55B30A M 235 i x Drive BMW 2 coupe (F22, F87) N55B30A M 235 i x Drive / M2 / Competition / CS BMW 3 (E90) N54B30A / N55B30A 335 xi / 335 i / x Drive BMW 3 (F30, F80) N55B30A 335 i / x Drive / Active Hybrid / M3 / Competition / CS BMW 3 Convertible (E93) N54B30A / N55B30A 335 i BMW 3 Gran Turismo (F34) N55B30A 335 i / 335 i x Drive BMW 3 Touring (E91) / (F31) N54B30A / N55B30A 335 i / 335 xi / 335 i x Drive BMW 3 coupe (E92) N54B30A / N55B30A 335 i / 335 xi / 335 i x Drive BMW 4 Convertible (F33, F83) N55B30A 435 i / M4 / 435 i x Drive / M4 Competition BMW 4 Gran Coupe (F36) N55B30A 435 i / 435 i x Drive BMW 4 coupe (F32, F82) N55B30A 435 i / 435 i x Drive / M4 / Competition / GTS / CS BMW 5 (F10) N55B30A 535 i / 535 i x Drive / Active Hybrid BMW 5 Gran Turismo (F07) N55B30A 535 i / 535 i x Drive BMW 5 Touring (F11) N55B30A 535 i / 535 i x Drive BMW 6 Convertible (F12) N55B30A 640 i / 640 i x Drive BMW 6 Gran Coupe (F06) N55B30A 640 i / 640 i x Drive BMW 6 coupe (F13) N55B30A 640 i / x Drive BMW 7 (F01, F02, F03, F04) N54B30A / N55B30A 740 i, Li / x Drive / Active Hybrid 7 BMW All N54B30 All BMW All N55B30 All BMW M3 F80 S55B30 All BMW M4 F82 / F83 S55B30 All BMW X3 (F25) N55B30A x Drive 35 i BMW X4 (F26) N55B30A x Drive 35 i / M 40 i BMW X5 (E70) / (F15) / (F85) N55B30A x Drive 35 i / x Drive 40 i BMW X6 (E71, E72) / (F16, F86) N54B30A / N55B30A x Drive 35 i BMW Z4 Roadster (E89) N54B30A s Drive 35 i / s Drive 35 is