Gates T42194 Engine Timing Belt Idler Pulley - Left Lower or Left Upper

Gates Timing Belt Idler Pulley T42194

The Gates T42194 timing belt idler pulley is built for Subaru engine timing systems that use a smooth backside contact surface. With a steel construction and OE performance rating, it is a direct-fit choice for maintaining proper belt routing and tension control in Subaru WRX, WRX STI, Impreza, Forester, Legacy, Outback, Baja, and Saab 9-2X applications.

Gates PowerGrip idler pulleys are offered in fixed-idler and tensioner-bracket replacement styles, with metallic or plastic construction depending on application. This T42194 pulley uses a smooth surface for backside belt contact, matching the timing system layout used on many Subaru engines.

Key Features

• Brand: Gates Timing Belt Pulley
• Part number: T42194
• Steel pulley construction for durability
• Smooth/backside contact surface
• OE performance rating
• Inside diameter: 10.5 mm
• Outside diameter: 60 mm
• Width: 35 mm
• No flanged end

Detailed Description

Gates T42194 is an engine timing belt idler pulley designed for Subaru timing belt systems that use a smooth backside pulley path. It is used in left upper and left lower positions across a wide range of Subaru WRX STI, WRX, Impreza, Forester, Legacy, Outback, and Baja models, plus Saab 9-2X applications. If you are replacing a worn timing belt pulley during a timing service, this part number provides an OE-style fit and function for the specified engines.

This part cross-references GMB 460-9020 for the same application. The Gates timing belt pulley line is focused on timing-system support components that help maintain belt tracking and consistent operation in engine valve train service.

What It Helps Address

• Timing belt noise from a worn idler pulley bearing
• Belt tracking issues caused by pulley wear
• Uneven timing belt movement in Subaru interference engines
• Service replacement for a damaged or seized idler pulley
• Timing system refresh during belt replacement intervals

Installation Notes and Tips

• Fits 2013-2021 Subaru WRX STI, left upper and left lower.
• Fits 2012-2016 Subaru WRX, left upper and left lower.
• Fits 1998-2014 Subaru Impreza, left upper; fits 2002-2014 Subaru Impreza, left lower.
• Fits 2004-2013 Subaru Forester, left upper; fits 2003-2013 Subaru Forester, left lower.
• Fits 1996-2012 Subaru Legacy, left upper; fits 2005-2012 Subaru Legacy, left lower.
• Fits 2010-2012 Subaru Outback, left upper; fits 2002-2009 Subaru Outback, left upper with VIN 4th Digit B; fits 2008-2009 Subaru Outback, left upper with VIN 4th Digit G.
• Fits 2005-2006 Saab 9-2X, left lower; fits 2005 Saab 9-2X, left upper.
• Confirm engine code, VIN notes, and pulley position before installation on interference-engine applications.

Quality Assurance

Gates is a recognized name in timing components, and the PowerGrip idler pulley line is engineered for OE performance in engine timing service. Part number T42194 is built as a steel, smooth-surface idler pulley for the listed Subaru and Saab applications.