1968-1982 C3 Windshield Pillar Header Left Corner Frame Assembly 3936309 - OEM Number(s) (3936309)
Moisture buildup beneath the upper windshield trim often leads to rust in the corners—and the LH side is no exception. This 1968–1982 LH Windshield Pillar/Header Corner Frame Assembly replaces the driver-side steel structure where the A-pillar meets the windshield header. Welds in as original and provides critical support for trim, sealing, and roof panel alignment.
Features
• Fits all 1968–1982 Corvettes
• Direct replacement for GM part number [INSERT GM #]
• Repairs LH corner of windshield header and pillar junction
• OE-style 2-piece inner and outer frame construction
• Fabricated from 20-gauge stamped steel
• Made in the USA
Tech Notes
• Overall height: 6 1/8"
• Horizontal header tab: 5 1/2" long
• Vertical flange width: 2 1/4"
• Weld-in installation—matches factory geometry
• Black e-coat finish for corrosion protection
Right Part. Right Spot. Right Result.
The orange-highlighted part in the diagram identifies the LH corner brace tucked just beneath the bright chrome windshield trim. Damage or rust in this location compromises both structural integrity and proper trim seating. This replacement restores the original fit and function—right where the roof, A-pillar, and windshield meet.
Because Details Matter
This isn’t just a cosmetic repair—it’s a structural one. Replacing a rusted LH corner frame restores your Corvette’s ability to support its windshield system correctly, keep water out, and hold trim tight to spec. If you’re pulling trim and seeing rot, this is the fix.
Under the Straw Hat – Restorer’s Insight
This small corner of steel does more than you think. It's responsible for holding the upper trim line straight, ensuring proper A-pillar seal pressure, and tying the roof structure into the birdcage. If your trim doesn’t sit right—or your t-tops leak despite new seals—there’s a good chance the real problem is hidden behind the chrome. This part lets you fix it the way GM did: with welds, not guesswork.
Also known under these part numbers: (For reference only)