Understanding Vent Glass on the Kona
If you are searching for a replacement door vent window on your Kona, you will not find one. Hyundai engineered the front and rear doors with full-drop glass panels running directly in the door frame without stationary sub-panes or division bars. What parts catalogs and repair orders list as the vent glass is actually the fixed rear side quarter window set directly into the C-pillar body section behind the rear doors.
Because there is no separate door-mounted vent pane, this rear quarter unit handles the triangular sightline behind the back seat. The pane is single-layer tempered safety glass finished with bonded perimeter encapsulation straight from the factory. Unlike some crossovers that integrate defroster elements or radio aerial traces into this section, this glass is purely structural and optical, containing no embedded electronics, sensor brackets, or heating grids.
Matching Tint Levels to Your Specific Trim
When sourcing replacement glass for this vehicle, matching the factory tint level is the primary detail. Hyundai split the Kona trims between basic solar tint and dark rear privacy tint behind the B-pillar.
| Trim Level | Glass Tint Style | Driver Side (LH) OEM | Passenger Side (RH) OEM |
|---|---|---|---|
| SE | Clear / Green Solar Tint | 87810-J9010 | 87820-J9010 |
| SEL, Limited, Ultimate, N-Line, Kona N | Dark Privacy Tint | 87810-J9020 | — |
I fit exclusively aftermarket glass sourced from tier-one manufacturers like PGW, Pilkington, FYG, and XYG, matching the exact factory privacy level so the new pane blends invisibly with your rear door glass. The base SE trim requires clear glass, whereas upper packages—including the turbocharged N-Line and performance Kona N—rely on dark privacy shading to match the rear hatch glass.
Hardware and Adjacent C-Pillar Components
Securing the rear quarter panel window involves more than simple perimeter bonding. The Kona OS platform pairs urethane adhesive with molded plastic alignment studs molded into the glass encapsulation. These studs pass through the sheet metal aperture and fasten from inside the vehicle cabin using retaining nuts (part 81564-3E000) alongside retaining clips (part 87815-L8000).
Replacing this pane requires working carefully around the exterior C-pillar garnish panel (left-hand 87850-J3000, right-hand 87860-J3000). The plastic garnish pieces border the outer edge of the glass assembly. During glass service, these trims must be disengaged carefully, as the interior mounting clips on the C-pillar garnish can snap if handled aggressively, which leads to loose exterior plastics and wind noise at highway speeds.
