Borla
Borla 400939 CrateMuffler Resonator Option 3in Center/Center 3.5in Round x 10in - Null Sound Center/Center - #400939
Borla 400939 CrateMuffler Resonator Option 3in Center/Center 3.5in Round x 10in - Null Sound Center/Center - #400939
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Borla 400939 CrateMuffler Resonator Option 3in Center/Center 3.5in Round x 10in - Null Sound Center/Center
Perfect for applications with limited space. If you want to lower the sound pressure level (SPL) of your CrateMuffler®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 resonator will reduce the sound level 2-3 dB(A). This straight-through design will not degrade the performance of your vehicle. Resonator dimensions 3" 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 wide (2 bolt style) band clamps.
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®'s Million-Mile warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.
Fitment
- Universal application — verify dimensions and compatibility before purchase.
- Manufacturer Part Number: 400939
Image is for reference only; actual product may vary by application.
CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.
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Manufacturer's Warranty — Borla
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Manufacturer's Warranty — Borla
Borla warrants its products to the original purchaser, for the vehicle on which they were first installed, against defects in materials and workmanship with its Million-Mile Warranty (one million miles, or 1.6 million kilometers in Canada). Black coatings, tip finishes, carbon fiber and moving parts, including valves and actuators, are covered for one year, and EV products are covered for 2 years from purchase. The warranty applies to Borla street-legal products only: XR-1 Raceline and marine products, racing products and street products used for racing are not covered, and sound level is not a warranty issue. Also excluded are appearance blemishes from weather, road hazards, lack of maintenance or extreme heat or cold; damage from accident, abuse, misuse or modification; welding to a universal muffler’s shell or end caps (attach only at the inlet and outlet nipples); and removal or reinstallation costs. Coverage is limited to repair or replacement at Borla’s option after Borla inspects the returned part. Products sold outside the USA and Canada carry a 3-year limited warranty. For Borla parts bought from PitStopTuning, start your claim with us.
Warranty terms are set by the manufacturer and may change. Contact us if you need help with a warranty claim.

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