Muffler Insert, for Megadual Exhaust, 3-3/8 OD, 17 Long

EMPI Muffler Insert for Megadual Exhaust - 3-3/8" OD

VW Fitment & Product Overview

This EMPI muffler insert (Part #2526) is engineered specifically for Megadual exhaust systems, a popular choice for air-cooled Volkswagen Beetle, Dune Buggy, and Sand Rail applications. Measuring 17 inches in length with a 3-3/8" outer diameter, these inserts are designed to slip into the exhaust pipe and seat firmly into the internal taper. They provide essential sound dampening for "Mega" style exhaust systems while maintaining the classic performance look of your VW.

Pro Tech Tips from Appletree Auto

1. Use a Wood Block for Seating: To avoid denting or deforming the insert during installation, never strike it directly with a metal hammer. Place a scrap piece of 2x4 lumber against the end of the insert and tap the wood with your hammer. This distributes the force evenly, allowing the insert to seat into the internal taper without damage.

2. Add a Mechanical Fastener: While these inserts are designed to be a friction fit within the taper, the high vibrations and heat cycles of a VW engine can cause them to loosen over time. For maximum security, we recommend using a small tack weld or a stainless steel self-tapping screw through the exhaust pipe to lock the insert in place.

3. Verify Your Exhaust Tip Diameter: Megadual exhausts come in various sizes. Before purchasing, use a caliper or tape measure to confirm that the internal diameter of your exhaust tip is compatible with a 3-3/8" OD insert. Ensuring a tight fit against the taper is critical for both noise reduction and preventing exhaust leaks.