Rear Quarter Panel Extension Filler Pair for 1968 Chevrolet El Camino Chevelle

A correct quarter extension filler closes a high-visibility gap and protects the hidden metal behind it.

Block water and grit from packing into the quarter extension area.
Reduce vibration and squeaks at the rear panel junction.
Restore a clean, factory-looking rear quarter transition.
Help prevent corrosion in seams that are hard to inspect later.

Enhance your classic car with a Rear Quarter Panel Extension Filler from Collectors Auto Supply! Made from durable materials, it fits various models. Order now!

Specifications:

Material: Rear Quarter Panel Extension Filler
Vehicle Fitment: Please see compatibility chart or give us a call to confirm

Q: What is a rear quarter panel extension filler?

It fills the gap between the rear quarter panel and the extension area to block water, dirt, and debris from getting trapped behind the exterior panels.

Q: What problems show up when it is missing or dried out?

You will see uneven gaps and vibration, plus moisture and grime collecting where it can start corrosion and stain finished surfaces.

Q: Are there other names for a rear quarter panel extension filler?

Parts catalogs may list it under a few related quarter and extension sealing terms.

Quarter panel filler
Quarter-to-extension seal
Quarter extension gasket
Rear quarter spacer seal
Quarter extension filler rubber

Names vary by manufacturer and OEM terminology.

Q: Does it help with fit and appearance?

Yes, it restores the factory-style transition so the extension sits cleaner and the rear quarter line looks finished.

Q: Any install tips or cautions?

Dry-fit both sides before final tightening, and confirm your application since quarter extensions and end gaps can differ by body style.

Why You Should Ride With Us?

You can purchase this product directly from Collectors Auto Supply, where we specialize in classic car restoration parts and accessories. Finding the perfect part for your classic car can be difficult, and even frustrating. And let us be honest. What makes it worse is a general lack of customer love in the industry. That is why we are here, and that is why we are different. We are car people just like you, and we know what you need. And if we do not already know it, we're listening. So, contact us if you need help finding a part, or have an idea for how to improve our website, or anything else. Or if you want to do it the old-fashioned way, give us a call at 1 (800) 414-4462.