Framed Door Sash Design Replaces Frameless Glass
Subaru abandoned its long-standing frameless window architecture for this production cycle, outfitting the front and rear doors with full, rigid metal window frames. When replacing front door glass on these models, the glass pane rides entirely enclosed inside a deep rubber glass run channel rather than seating directly against the exterior body weatherstripping. This mechanical shift changes how the side glass behaves: instead of a bonded bottom sash bracket clamped across the base of the glass, the window connects to the internal cable regulator via dedicated mounting points secured with retaining bolts.
Every trim level—from the base 2.5i and Outback Sport through the turbocharged WRX and WRX STI—uses green-tinted Solar Control Glass on the front doors. There are no embedded antennas, defrost grids, or mirror sensors inside these movable panes. When I source replacements, I supply strictly aftermarket glass manufactured by industry leaders like PGW, XYG, Pilkington, and FYG, matching the exact factory curvature and solar tinting of the original panels.
Front Door Glass Hardware and Part Identifiers
The front door glass layout remains consistent between the four-door sedan (GE/GV) and five-door hatchback (GH/GR) body styles. The front glass panel slides past an inner and outer horizontal belt moulding (dew wipe) designed to shed rainwater away from the inner door cavity.
| Door Position | NAGS Part Number | Subaru OEM Reference | Glass Characteristics |
|---|---|---|---|
| Front Driver Side (Left) | FD23388 | 62011FG010 / 62011FG011 | Solar green tint, dual bottom bolt tabs, framed sash |
| Front Passenger Side (Right) | FD23387 | 62011FG000 / 62011FG001 | Solar green tint, dual bottom bolt tabs, framed sash |
On the rear passenger doors, the movable window pane operates alongside an upright division bar. This vertical rail physically separates the lowering door glass from the stationary rear quarter vent glass pane, maintaining alignment within the rear door frame.
Window Travel Issues and Track Resistance
A frequent problem on these doors is a window that rolls up halfway and immediately drops back down. The framed sash relies on an anti-pinch safety mechanism in the regulator motor. Over time, road grime, salt, and dust collect inside the felt-lined rubber perimeter channel. The resulting friction mimics an obstruction, causing the power window control module to reverse the motor travel. Thoroughly cleaning the felt channel tracks and lubricating them with dry silicone spray usually resolves the false pinch-trigger without replacing the regulator.
Motor brush wear and electrical contact oxidation inside the master driver switch assembly are also common failure points on these cars. If the window stops moving entirely, testing voltage at the motor harness connector isolates whether the issue lies in the door switch or the cable drive unit inside the door shell.
How do I reset the auto-up feature after disconnecting the battery?
Whenever the 12-volt battery is disconnected, the door module loses its top and bottom limit positions. Pull the driver window switch up until the pane closes completely and hold the switch up for an additional five seconds. Next, push the switch down until the glass lowers into the door and continue holding it down for five seconds. The pinch protection system will relearn the travel limits and auto-up function will work normally.
Can front door glass from a 2007 Impreza fit the 2008 model?
No. The 2007 models used the older frameless window setup where the glass seal rested directly against the roofline weatherstrip. The 2008 model uses a shorter, differently contoured glass designed specifically to slide within the fully framed door sash.
Does the WRX STI use lighter glass than the base 2.5i?
No. Both standard Impreza trims and high-performance STI variants share the identical front door glass part numbers (FD23387 and FD23388). Glass thickness, solar tint, and mounting hardware are completely interchangeable across all trims for these model years.
