Borla · New
Borla CrateMuffler Resonator Option 2.25in Center/Center 3.5in Round x 10in
MPN 400937 · Store SKU bor400937
Supplier stock checked 11/7/2026, 4:21:25 AM UTC. Adding a part does not reserve it.
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Product details
Perfect for applications with limited space. If you want to lower the sound pressure level (SPL) of your CrateMuffler(r)s, you can install this resonator. This compact bottle / bullet style resonator can also be used as a universal resonator in any system of this diameter. The Resonator is designed to attenuate overall sound. This is perfect for customers looking to reduce the sound level 2-3 dB(A). This straight-through design will not degrade the performance of your vehicle. Resonator dimensions 2.25" Center Inlet/ 3" Center Outlet, 4" Round, 10" Long Body 15" Overall Length. Un-Notched necks are designed for weld in installation. If clamping, use 3" wide band clamps 18003. 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. There is no logo embossment on this part. 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. Resonator - Sound Level N/A Resonator - 2.25" Center Inlet/ 2.25" Center Outlet 3.5" Round x 10" Long Body 14" Overall Length Universal Part Reversible Design. Resonator - CrateMuffler / Universal
Manufacturer fitment & guides
Check 400937 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y