The ACL Main bearing set STD Size (Product Code: 4M2309-STB) by ACL Duraglide is a top-quality crankshaft component designed to suit VR vehicles. With a notch position to the left of center on number 4 shell, this main bearing set is precision-engineered for optimal performance.

This main bearing set includes main bearing (c): 2302 half type: Upper with OE Part Numbers 1 and 2: 18017988 and 18020437 respectively. The min and max standard shaft sizes are 2.4988in / 63.47mm and 2.4998in / 63.495mm respectively, with min and max standard tunnel sizes of 2.6870in / 68.25mm and 2.6880in / 68.275mm. The max wall at crown is 0.0935in / 2.374mm, max overall length is 0.8689in / 22.07mm, and min and max vertical oil clearance are 0.0003in / 0.007mm and 0.0033in / 0.083mm.

Additionally, the main bearing (c): 2303(F) with half type: Upper & Lower includes OE Part Numbers 1 and 2: 18017978 and 12537033 respectively. The specifications for this main bearing set are similar to the previous one but with a max overall length of 1.0579in / 26.87mm.

The ACL Duraglide brand is known for its high-quality engine bearings that have been manufactured in Launceston, Tasmania, Australia for over 70 years. With a global reputation for robust metallurgy, quality, precision, innovation, and performance, ACL engine bearings are a trusted choice for both OEM and aftermarket applications. Certified with ISO9001: 2015 Quality Management System, ISO14001: 2015 Environmental Management System, and ISO451001: 2018 Occupational Health & Safety Management System, ACL ensures the highest standards of production and quality control. Choose ACL Duraglide main bearing set STD Size for reliable and durable performance in your vehicle's crankshaft.