Genuine Subaru WRX STI Bellhousing

The Bellhousing of the Subaru WRX STI connects the engine and gearbox securely. It is a strong shield that protects the clutch components from flying dirt and heat. Composed of solid cast metal, the Bellhousing resists cracking during hard launches, which helps to carry on Subaru performance sedans' reputation for reliability. A precise dowel alignment ensures a smooth-running WRX STI driveline, reducing vibration and improving shift feel and efficiency on spirited drives or daily commutes. The Bellhousing also provides secure mountings for the starter and clutch release for quicker engagement and more secure starts even when tuned for extra torque in the Subaru boxer engine. An individual applying the clutch in either a 2004 track-prepped WRX STI or a 2015 showroom model as well as in later cars with revised suspension will see the same Bellhousing geometry. This mates the six-speed transmission to an EJ or FA series block. There are two designs available. One is an integral Bellhousing which is focused to the case; this trims weight for good balance. The other is a detachable shell which allows the transmission to bolt to alternate Subaru engines without too much machining. Both types give a good seal of the flywheel area against oil and water ingress. Because leaks or sudden misalignment and other issues can occur from unnoticed damage, routine visual checks of the Bellhousing for hairline cracks around the bolt holes ensure drivetrain safety. The WRX STI part has some very useful design features like internal ribs to add extra stiffness as well as a drain opening that allows debris to be quickly removed. These features are convenient for the user and underscore Subaru's commitment to a speedy but reliable vehicle experience. Keeping the WRX STI clutch cavity clean, the Bellhousing extends Subaru service life mile after mile. Track enthusiasts appreciate the solid construction of the WRX STI launch enclosure as it remains consistent.

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