1984-1996 C4 Coupe Rear Window Drain Kit - Fixes Rear Hatch Water Leaks
Stop interior leaks before they start with our exclusive Rear Window Drain Kit for 1984–1996 Corvette C4 Coupes. This kit restores the essential rear hatch drainage function—routing rainwater safely outside your C4’s body rather than into your storage area or behind trim panels. A must-have for preserving long-term integrity and enjoying a dry, damage-free cabin.
Features
• Restores proper rear hatch drainage on 1984–1996 C4 Corvette Coupes
• Eliminates moisture buildup, leaks, and water pooling in cargo area
• Includes tubing, brass grommets, and install-ready instructions
• Manufactured exclusively by Mid America Motorworks
• OE-style fit and appearance with long-term durability
Dimensions and Weight
• Drain grommet OD: 1/2"
• Tube OD: 1/4"
• Kit weight: Approx. 3.4 oz
Tech Notes
• Designed for Coupe models only
• Drilling required for proper installation
• Instructions included; adhesive or caulking recommended for sealing
Installation Overview
To install this kit properly, follow these key steps:
– Gently loosen and tie back the weatherstrip to access the drain area
– Drill pilot holes through both layers of fiberglass using 1/8" and then 5/16" bits in a vertical orientation
– Insert the drain tube with brass grommet, sealing it with included “shoestring” caulking or optional silicone adhesive
– Reinstall weatherstrip and test the drain with water to ensure full drainage through the wheel well
Because Details Matter
This kit solves one of the most common—and annoying—C4 coupe complaints: water intrusion in the rear hatch area. Whether your Corvette is a weekend cruiser or a restoration showpiece, a properly functioning drainage system protects your carpet, prevents mold, and guards against rust around the rear compartment. A dry Corvette is a happy Corvette.
Also known under these part numbers: (For reference only)