Luk LFW490 Clutch Flywheel

Overview

The LuK LFW490 clutch flywheel is a new OE-spec replacement for clutch service on select Subaru applications. It provides the smooth, flat friction surface needed for proper clutch engagement and is a practical alternative to resurfacing when replacing the clutch assembly.

Fits 2015-2021 Subaru WRX STI, N/A. Fits 2013-2014 Subaru Impreza, N/A. Fits 2005-2011 Subaru Impreza, N/A. Fits 2004 Subaru Impreza, N/A, from engine serial # 978365. This part cross-references AMS Automotive 167823 and interchange numbers 12310 AA340, 4160354100 for the same application.

Key Features

• OE-spec new flywheel construction for clutch replacement service
• Engineered as a smooth, flat mating surface for consistent clutch operation
• New component, not remanufactured
• Includes ring gear and dowel pins as part of the OE-style design
• Flywheel diameter: 24.6 in. (9.685 in.)
• Number of teeth: 124

Product Details

LuK LFW490 is built for drivers and technicians who want a direct replacement flywheel during clutch service on Subaru WRX STI and Subaru Impreza applications. The flywheel is a critical part of the clutch system because it must maintain a true surface for the clutch disc to engage correctly. Using a new flywheel can eliminate the need for resurfacing when the existing unit is worn, scored, or out of specification. LuK manufactures this flywheel to OE specifications, making it a straightforward choice for restoring clutch system function on the listed vehicles.

Common Issues This Part Can Address

• Worn or uneven clutch contact surface
• Scoring or heat damage on the flywheel face
• Clutch chatter during engagement
• Judder or inconsistent take-up after clutch service
• Need for flywheel replacement during a clutch job

Installation Notes

Verify fitment by year, model, and engine serial number before installation. The 2004 Subaru Impreza application requires engine serial number 978365 or later. Inspect the clutch assembly, ring gear condition, and related components during service to confirm the replacement flywheel is installed on a clean, flat mating surface.

Quality Assurance

LuK states that this flywheel is new, never remanufactured, and manufactured to OE specifications for consistent fit and function.