ACL High Performance Standard Size Main Bearing Set, #5 Thrust Bearing Position Subaru WRX 2002-2014 / STI 2004-2021 | 5M8309H-STD RSX_2002-2006 It has a pipe-wall thickness

It has a pipe-wall thickness of 14 Gauge

The ISR Performance fan shrouds are made for a direct OEM fit and include Dual 12 inch electric fans

Turbo mounting gaskets included

Part #: 19

The STU flywheel is recommended for forced induction and/or track and rally racing applications

ACL High Performance Standard Size Main Bearing Set, #5 Thrust Bearing Position Subaru WRX 2002-2014 / STI 2004-2021 | 5M8309H-STD RSX_2002-2006 It has a pipe-wall thicknessACL's main bearings are made of a softer metal so that you don't wear out your crank or engine block. Additionally, a thin layer of oil lubricates the connection between the bearings and the crank allowing the crank to "float" and reduce wear. Proper support via main bearings is crucial to prevent oscillations and wear that can damage the crankshaft and other components as the motor moves further out of balance. Bearings with extra oil clearance will