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Borla universal muffler. Match the dimensions, pipe connections and installation method to your exhaust. Construction: T-304 stainless steel. Supplied finish: Natural mill. The muffler can be installed in either flow direction. Clamps are supplied separately.
Application: Universal exhaust component. Dimensions and connection layout depend on the selected SKU; compare the variant specifications before installation.
| SKU / option | Borla technical table specification | Installation and care requirements |
|---|---|---|
| 401663 — Touring / 3" / Round / 24" x 7.75" / 29" overall | Borla application panel: Specialty Muffler - Heavy Duty (Truck) - 3" Center Inlet/ 3" Center Outlet 7.75" Round 24" Long Body 29" Overall Length. Universal Part. Reversible Design. Un-notched Neck.; Borla technical table: Muffler Config: Center/Center; Muffler Shape: Round; Muffler Tubing Size: 3"; Case Dimensions: 24" x 7.75"; Muffler Oal: 29" | Developed for truck applications and other applications that require a long body muffler. If clamping, use wide (2 bolt style) band clamps (clamps NOT included). Use 1" wide band style clamps 18330. High-quality T-304 austenitic stainless steel for superior corrosion resistance. 100% welded construction for strength. |
| 401664 — S-Type / 2.75" / Round / 24" x 6.75" / 29" overall | Borla application panel: Specialty Muffler - Heavy Duty (Truck) - 2.75" Center Inlet/ 2.75" Center Outlet 6.75" Round 24" Long Body 29" Overall Length. Universal Part. Reversible Design. Un-notched Neck.; Borla technical table: Muffler Config: Center/Center; Muffler Shape: Round; Muffler Tubing Size: 2.75"; Case Dimensions: 24" x 6.75"; Muffler Oal: 29" | Developed for truck applications and other applications that require a long body muffler. If clamping, use wide (2 bolt style) band clamps (clamps NOT included). Alternate muffler with Notched necks is 400130 (use 1" wide band clamps 18327) Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel for superior corrosion resistance. 100% welded construction for strength. |
| 401665 — Touring / 2.75" / Round / 24" x 7.75" / 29" overall | Borla application panel: Specialty Muffler - Heavy Duty (Truck) - 2.75" Center Inlet/ 2.75" Center Outlet 7.75" Round x 24" Long Body 29" Overall Length. Universal Part. Reversible Design. Un-notched Neck.; Borla technical table: Muffler Config: Center/Center; Muffler Shape: Round; Muffler Tubing Size: 2.75"; Case Dimensions: 24" x 7.75"; Muffler Oal: 29" | Developed for truck applications and other applications that require a long body muffler. If clamping, use wide (2 bolt style) band clamps (clamps NOT included). Alternate muffler with Notched necks is 401158 (use 1" wide band clamps 18327). High-quality T-304 austenitic stainless steel for superior corrosion resistance. 100% welded construction for strength. |
Check Borla's installation instructions for the selected part number before fitting.
