Heavy-Duty Cylindrical Stainless Muffler – Slip-Fit, 30" Body – 4", 5" (J Series)

Heavy-duty cylindrical stainless muffler for diesel pickups, medium-duty trucks, and Class 8 rigs — 30" total length, 7" body diameter. Slip-fit inlet and outlet collars with slot cuts install with a clamp — no welding required. Available in 4" and 5" inlet/outlet sizes.

Key Features

• Heavy-gauge T304 stainless steel construction — built for over-the-road commercial use
• Straight-through chambered core with generous 7" body volume for deep, low-drone tone
• Slip-fit inlet and outlet collars with slot cuts — no welding required for install
• Sized for diesel pickups, medium-duty trucks, and Class 8 rigs

Configuration

Straight-through cylindrical body — center-in / center-out, slip-fit collars.

Available inlet/outlet sizes: 4 in, 5 in.

Body Dimensions

• Overall length: 30" / 76.2 cm
• Body length: 24" / 60.96 cm
• Body diameter: 7" / 17.78 cm
• Inlet / outlet pipe diameter: varies by variant — see the size selector

SKU Reference

• 1 × Muffler (4 in) → SKU PL-74-J4
• 1 × Muffler (5 in) → SKU PL-75-J5

Note: Confirm your inlet and outlet diameters (see the variant-specific dimension diagram) against your exhaust system before ordering. Sold as a universal-fit muffler; light welding may be required for a permanent install.