1969-1975 Corvette C3 Body Sill Wedge Shield 3958885

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Item ID: 641-969

GM reference #: 3958885

Availability: In Stock - Ships today if ordered by 3 PM CT

Fits Years:

1969-1975

$6.99

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Description

1969-1975 C3 Body Sill Wedge Shield 3958885 - OEM Number(s) (3958885)

Safeguard your C3’s underbody from heat and debris with this precision-fit rubber wedge shield.
Designed for the #1 mount area just behind the firewall splash shield, this closed-cell rubber shield helps block road debris and reduce heat transfer to the lower firewall region. Its distinctive triangular shape mounts between the splash shield and sill wedge cavity—delivering discreet, effective protection that was factory-correct during 1969–1975 production.

Fits the Following Corvette Models:
• 1969–1975 C3 Coupe and Convertible – All Models

Material and Finish
Made from high-quality closed-cell rubber. Resilient under pressure, water-resistant, and impervious to most automotive chemicals. Matte black finish blends into underbody trim and original firewall shields.

Dimensions and Weight
• 2-1/2" x 2-3/4" x 1"
• Approximate Weight: 0.3 lbs per shield

Features and Benefits
• Reproduction Shield for Firewall / Mount #1 Area
• Mounts Behind Firewall Splash Shield on Both Sides
• Helps Reduce Heat Transfer to Lower Cabin
• Shields Mounting Area from Road Debris Intrusion
• Triangular Shape Matches Factory Design
• Closed-Cell Rubber for Long-Term Durability
• Sold Individually – Two Required Per Car

Under the Straw Hat
This shield may be small, but it plays a big role in protecting one of the C3’s most exposed underbody seams. GM added these wedge fillers to reduce airflow and splashback into the body sill area. They also help insulate the cabin against heat and moisture. Most originals have long since deteriorated—this replacement restores both function and factory fit.

Because Details Matter
If you're aiming for a complete restoration—or simply want peace of mind knowing your Corvette is protected from beneath—this shield delivers silent performance where it counts. Pair it with new splash shields or body mounts to lock in long-term durability.