Borla CrateMuffler ATAK Muffler for Chevrolet Small-Block 350, 383 and 406 V8 Engines, Part Number BOR400844

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 350/ 383/ 406 CID V8 engine family. The directional design provides the aggressive ATAK(r) sound, tuned for each engine family and will dramatically reduce, or eliminate drone on specified applications. Muffler dimensions 3" Offset Inlet / 3" Center 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" Center Outlet, 4.35" x 9.10" Oval, 14" Long Body, 19" Overall Length, ATAK.

• 3" Offset Inlet/ 3" Center 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 muffler is purpose-built for crate and custom-built Chevrolet small-block V8 engines. Part number BOR400844 is tuned for the 350, 383 and 406 CID engine family, delivering an aggressive exhaust note while supporting strong performance. Its directional design helps reduce or eliminate unwanted interior drone on specified applications, making it well suited for high-output street, performance and custom vehicle builds.

This Borla muffler features a 3-inch offset inlet and 3-inch center outlet with a compact oval body designed for adaptable exhaust system installation. The outlet is identified by the mounting bracket welded to the end cap, so correct orientation is important during installation. Precision CNC manufacturing supports consistent fit and construction quality, while premium T-304 stainless steel provides excellent corrosion resistance and long-term durability compared with lower-grade T-400 series stainless materials. Borla backs the CrateMuffler with its Million-Mile Warranty.

• Engine Application: Tuned for Chevrolet small-block 350, 383 and 406 CID V8 engines
• Inlet Configuration: 3-inch offset inlet
• Outlet Configuration: 3-inch center outlet
• Body Shape: Oval muffler design
• Body Length: 14 inches
• Overall Length: 19 inches
• Construction: Premium T-304 stainless steel
• Sound and Flow: Directional ATAK tuning with drone reduction on specified applications

What's Included: One Borla CrateMuffler ATAK muffler, part number BOR400844. Inlet and outlet tubing, clamps, hangers and other installation hardware are not included unless specified separately. This muffler has directional flow; use the end with the welded mounting bracket as the outlet. Fitment is intended for compatible custom or crate-engine exhaust systems using the listed configuration and Chevrolet small-block V8 engine family.

Features:

• Purpose-built for Chevrolet small-block 350, 383 and 406 CID V8 crate and custom engines
• ATAK directional tuning delivers an aggressive exhaust sound with reduced or eliminated drone on specified applications
• 3-inch offset inlet and 3-inch center outlet support versatile custom exhaust system installation
• Premium T-304 stainless steel construction provides durable performance and strong corrosion resistance

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