Borla CrateMuffler ATAK Muffler for Chevrolet Small Block 350/383/406 V8, Part Number BOR400841

BORLA(r)'s CrateMuffler(r) is the world's first muffler purpose-built to optimize the sound & power of crate and custom built motors. The mufflers are directional. The outlet can be identified by the mounting bracket welded to the endcap. This muffler is tuned for the Chevrolet Small Block 350/383/406 CID V8 engine family. The directional design provides the aggressive ATAK(r) sound and will dramatically reduce, or eliminate drone on specified applications. Muffler dimensions 3" Offset Inlet/ 3" Offset Outlet 4.35" x 9.10" Oval, 14" Long Body, 19" Overall Length. Built from premium T-304 stainless steel, superior to T-400 series (such as 409), to give you the absolute best in performance and durability. Precision computer numerical control (CNC) manufacturing ensures an accurate fit and best of all, BORLA(r) stands behind every CrateMuffler(r) with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand. CrateMuffler, Chevrolet Small Block 350/ 383/ 406 CID V8 High Output, 3" Offset Inlet/ 3" Offset Outlet 4.35" x 9.10" Oval, 14" Long Body, 19" Overall Length ATAK.

• 3" Offset Inlet/ 3" Offset Outlet 4.35" x 9.10" Oval, 14" Long Body, 19" Overall Length
• When installed on cataloged applications, they will reduce, or eliminate drone
• Mufflers have directional flow. Outlet end has mounting bracket on it.
• CrateMuffler(r)s are tuned for specific engines

The Borla CrateMuffler ATAK is purpose-built for crate and custom-built engines, delivering optimized exhaust sound and performance for Chevrolet Small Block 350, 383, and 406 cubic-inch V8 applications. Its aggressive ATAK tuning produces a strong, performance-oriented exhaust note while helping reduce or eliminate unwanted interior drone on specified applications.

This Borla muffler features a directional flow design. Install the outlet end toward the rear of the vehicle; the outlet is identified by the mounting bracket welded to the end cap. The offset inlet and offset outlet configuration supports flexible exhaust-system installation, while precision computer numerical control (CNC) manufacturing promotes accurate fitment and consistent construction quality.

Manufactured from premium T-304 stainless steel, the CrateMuffler is designed to provide excellent corrosion resistance, durability, and long-term performance compared with lower-grade T-400-series stainless steels such as 409. Borla backs this muffler with a Million-Mile Warranty, reflecting the brand’s focus on dependable exhaust performance. Verify engine and application requirements before installation, as CrateMuffler models are tuned for specific engine families.

Specifications and technical data:

• Application: Chevrolet Small Block 350, 383, and 406 cubic-inch V8 engines
• Brand: Borla
• Part Number: BOR400841
• Series: CrateMuffler ATAK
• Inlet Configuration: 3-inch offset inlet
• Outlet Configuration: 3-inch offset outlet
• Body Shape: Oval stainless steel muffler
• Construction: Premium T-304 stainless steel with directional flow

What's included: One Borla CrateMuffler ATAK muffler. Exhaust tubing, clamps, hangers, and installation hardware are not included unless supplied by the vehicle-specific installation system.

Features:

• Engine-Specific Tuning: Designed for Chevrolet Small Block 350, 383, and 406 cubic-inch V8 crate and custom-built engines.
• Aggressive ATAK Sound: Delivers Borla’s performance-oriented exhaust tone for high-output applications.
• Drone Reduction: Helps reduce or eliminate unwanted exhaust drone on specified cataloged applications.
• Premium Stainless Construction: Built from durable T-304 stainless steel for corrosion resistance and long service life.
• Directional Flow Design: The outlet end is identified by the welded mounting bracket and must be installed in the correct direction.
• Offset Inlet and Outlet: Uses a 3-inch offset inlet and 3-inch offset outlet for adaptable exhaust-system routing.
• CNC Manufacturing: Precision computer-controlled production supports accurate fitment and consistent quality.
• Long-Term Warranty: Backed by Borla’s Million-Mile Warranty for added ownership confidence.

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