What Is the Blue Band at the Top of a Subaru Outback Windshield?
Reviewed by the Skyview Auto Glass technical team — NWRD-, ASE- and DINITROL-trained technicians · Updated November 2026
Quick answer
The blue band at the top of a 2017 Subaru Outback windshield in our records is a shade band, a tinted strip built into the glass to cut glare. Its color is encoded in the part number rather than added as a film, which is why that windshield ends in GBNN where a plain one ends in GTYN. We match the suffix so the new glass looks right.
The shade band on the 2017 Outback part
A 2017 Subaru Outback windshield in our records, FW04645GBNN, is green tinted with a blue shade band across the top. The band is a tinted strip built into the glass interlayer to cut glare from low sun, and it is part of the laminate rather than a film applied afterwards. That is why the color is encoded in the part number itself.
The difference between a number ending GBNN and one ending GTYN is the shade band. Glass with the wrong band is visibly wrong through the top of the screen, so the suffix gets matched rather than approximated. The 2017 part also carries a forward camera with a dual static and dynamic calibration, acoustic glass, a heated wiper park, and a three-quarter and top molding, so the shade band is one detail among several that the part number carries.
Because the band is one of several encoded details, a windshield that seals correctly but carries the wrong suffix is still visibly wrong at the top of the screen, which is the kind of thing an owner spots within a week. The 2017 Outback also needs both a three-quarter molding and a top molding, and those trim pieces are read off the same part number rather than guessed at. Matching the suffix and the moldings together is how the new glass lands right the first time.
The band is in the glass, not on it
Because the shade band is built into the interlayer, it cannot be added, changed, or removed without replacing the glass. A windshield either comes with the blue band as part of its specification or it does not, and the suffix of the part number tells you which before anybody opens a box.
Understanding the Outback shade band
The blue band is a tint film you can peel off.
No. It is a tinted strip built into the glass interlayer, part of the laminate. It is encoded in the part number suffix, which is why a 2017 Outback windshield ends GBNN rather than GTYN.
Any green-tint Outback windshield fits a 2017.
No. The shade band color is part of the specification, and glass with the wrong band is visibly wrong through the top of the screen. The suffix is matched to the original rather than approximated.
More questions about the Outback shade band
What is the blue strip at the top of my Outback windshield?
It is the shade band, a tinted strip built into the glass to cut glare. On a 2017 Outback it is blue, and its color is encoded in the part number suffix rather than applied as a film.
Does the shade band affect the windshield replacement?
It affects which part is ordered. The band is part of the specification, so the suffix is matched to the original. The 2017 Outback part also carries a camera with a dual calibration, so the recalibration is part of the job. How that dual routine applies is covered in our calibration reference.
Can I choose a different shade band color?
No. The band is built into the glass specification and matched to the part number. We fit the glass the catalog returns for your VIN rather than substituting a different band.
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