Borla 400500 Heavy-Duty Truck Muffler, 3-Inch Center Inlet/Outlet, 24-Inch Body, Notched Necks

Developed for truck applications and other applications that require a long body muffler. This muffler is considered an" S-Type" muffler when compared to the 7.75" diameter x 24" Long body BORLA(r) Specialty mufflers and used on the same application. Notched necks for clamp in installation using 1" wide band style clamps 18330 (clamps not included). Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel for superior corrosion resistance. 100% welded construction for strength. Free Flow design for improved performance. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation. Alternate muffler with Un-Notched necks is 400436. If clamping, use 3" wide band clamps 18006. Best of all, it's made in the USA and backed by BORLA(r)'s Million-Mile warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand. Specialty Muffler - Heavy Duty (Truck) - 3" Center Inlet/ 3" Center Outlet 6.75" Round x 24" Long Body 29" Overall Length. Universal Part. Reversible Design. Notched Necks.

• Alternate muffler with Un-Notched necks is 400436. If clamping, use 3" wide band clamps 18006.
• Notched necks are designed for clamp in installation. Use 1" wide band clamps 18330.
• Long body design works well on SUV and truck applications
• Universal muffler. Reversible design.

The Borla 400500 Specialty Heavy-Duty Truck Muffler is designed for truck, SUV, and other applications requiring a long-body muffler. Its 3-inch center inlet and center outlet provide a universal configuration, while the reversible design offers installation flexibility. The notched necks are intended for clamp-in installation with Borla 18330 1-inch-wide band clamps, which are sold separately.

Built from high-quality T-304 austenitic stainless steel, this Borla muffler delivers excellent corrosion resistance and long-term durability. Its fully welded construction helps provide structural strength, while the free-flow design supports improved exhaust performance. High-temperature continuous-filament fiber acoustic material helps control sound for a refined exhaust tone. The natural mill finish may be brushed or polished before installation, depending on the desired appearance.

This universal Borla 400500 muffler features a long-body design suited to heavy-duty truck and SUV applications. For installations using the muffler's notched necks, use Borla 18330 1-inch-wide band clamps. The alternate un-notched muffler is Borla 400436; when clamping that configuration, use Borla 18006 3-inch-wide band clamps. Made in the USA, the Borla 400500 is backed by Borla's Million-Mile Warranty. Professional installation is recommended to verify adequate clearance, orientation, and compatibility with the existing exhaust system.

What's Included

• Borla 400500 universal heavy-duty truck muffler
• Notched-neck muffler body

Fitment

Universal fit for selected truck, SUV, and custom exhaust applications requiring 3-inch center inlet and outlet connections. Vehicle-specific fitment should be confirmed before installation.

Features:

• Long-Body Truck Design: Developed for heavy-duty truck, SUV, and other applications requiring a longer muffler body.
• T-304 Stainless Steel Construction: Provides superior corrosion resistance and durable performance in demanding exhaust environments.
• Free-Flow Performance: Supports efficient exhaust flow and improved system performance.
• Reversible Installation: Center inlet and outlet configuration can be oriented in either direction for added installation flexibility.

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1