Home / Shop / Borla CrateMuffler Resonator Option 3in Center/Center 3.5in Round x 10in - Null Sound Center/Center

Borla CrateMuffler Resonator Option 3in Center/Center 3.5in Round x 10in - Null Sound Center/Center

SKU: BOR400939

Resonators

BOR CrateMufflers...

Borla

Borla CrateMuffler Resonator Option 3in Center/Center 3.5in Round x 10in - Null Sound Center/Center

SKU: BOR400939

Resonators

BOR CrateMufflers...

IN STOCK! Est Ship 3-5 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.

We accept

Description

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 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 3" wide band clamps 18006. 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.

Product Overview

Perfect for applications with limited space. If you want to lower the sound pressure level (SPL) of your CrateMuffler, you can install the Resonator Option. The Resonator Option is designed to attenuate overall sound. This resonator can also be used in any system of this diameter. 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. There is no logo embossment on this part. Reversible design for installation flexibility. High-quality T-304 austenitic stainless steel will never rust. 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. 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.

Features and Benefits

Universal resonator. Reversible design.
Compact size is perfect for applications with limited space
Use with BORLA S-Type CrateMuffler to achieve the Touring sound level
Un-Notched necks are designed for weld in installation. If clamping, use 3" wide band clamps 18006.

Product Details

Body Height (in.):	OEM
Body Height:	OEM
Body Length (in.):	OEM
Body Length:	OEM
Body Width (in.):	OEM
Body Width:	OEM
Construction:	All Welded
Description:	CrateMuffler; 3 in. In/Out; 3.5 in. Round x 10 in. Case Body; Center/Center; Rectangular; Resonator Option; T-304 Stainless Steel;
Grade Type:	Performance
Inlet Connection Type:	Pipe
Inlet Outside Diameter:	3.000 in.
Inlet Position:	Center
Inlet Size (in.):	3
Inlet Type:	OEM
Main Piping Diameter:	3.000 in.
Material:	T-304 Stainless Steel
Muffler Count:	1
Off Road Use Only:	No
Outlet Outside Diameter:	3.000 in.
Outlet Position:	Center
Outlet Size (in.):	3
Outlet Type:	OEM
Overall Length (in.):	OEM
Overall Length:	OEM
Part Number:	bor400939
Position:	N/A
Prop 65 (C, R or CR):	CR
Prop 65 - Long Label:	WARNING: This product in the physical form it is sold does not present a hazard. However, operations including, but not limited to welding, brazing, or thermal cutting can expose you to chemicals including Chromium, Nickel, Cobalt, Arsenic, Cadmium and Lead which are known to the State Of California to cause cancer, birth defects and other reproductive harm. For more information go towww.P65Warnings.ca.gov
Prop 65 - Short Label:	Proposition 65 Warning.JPG
Prop 65 Yes/No:	Yes
Shape:	Rectangular
Tip / Outlet Finish:	N/A
Title Extended:	CrateMuffler Resonator Option 3in Center/Center 4in Round X 10in Part # 400939
Title:	CrateMuffler Resonator 3in Center Inlet/ 3in Center Outlet 4in Round X 10in Long Body

Application Summary

CrateMuffler Resonator - 3" Center Inlet/ 3" Center Outlet 4" Round x 10" Long Body 14" Overall Length. Universal Part. Reversible Design.

Part Type

Exhaust Muffler

Data: v4.2 - Upd: 2026-10-14 02:09:53

Features

Compact size is perfect for applications with limited space
Un-Notched necks are designed for weld in installation. If clamping, use 3" wide band clamps 18006.
Universal bottle / bullet style resonator. Reversible design.
Use with BORLA(r) S-Type CrateMuffler(r) to achieve the Touring sound level

Specifications

Product Attributes - UPC: 808422009393
Product Attributes - Brand: Borla
Product Attributes - Notes: For use with Borla CrateMuffler systems.
Product Attributes - Quantity: Sold individually.
Product Attributes - Part Type: Resonators
Product Attributes - Product Line: Borla CrateMuffler Resonators
Product Attributes - Resonator Finish: Natural
Product Attributes - Resonator Material: 304 stainless steel
Product Attributes - Resonator Inlet Position: Center
Product Attributes - Resonator Outlet Position: Center
Product Attributes - Manufacturer's Part Number: 400939
Product Attributes - Case Outside Diameter (in.): 4.00 in.
Product Attributes - Resonator Case Length (in.): 10.000 in.
Product Attributes - Resonator Inlet Diameter (in.): 3.00
Product Attributes - Resonator Overall Length (in.): 14.000 in.
Product Attributes - Resonator Outlet Diameter (in.): 3.00

Reference Information

Brand Name/s	Borla
StreetFX SKU	bor400939
SFX Item ID	4224635
Supplier Item Code	4224635
Manufacturer SKU	400939
Manufacturer UPC	808422009393
Alternative References	3in, 3.5in, 10in