Borla CrateMuffler SBC Hot 350/383 3 inch Offset/Center 14in x 4.35in x 9in Oval Muffler

SKU: BOR400840

Mufflers

BOR CrateMufflers

Borla

Borla CrateMuffler SBC Hot 350/383 3 inch Offset/Center 14in x 4.35in x 9in Oval Muffler

SKU: BOR400840

Mufflers

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.

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Description

Crate Muffler

Product Overview

Borla's CrateMuffler 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. The directional design provides custom sound, tuned for each engine family and will dramatically reduce, or eliminate drone on specified applications. 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-controlled CNC manufacturing ensures an accurate fit and best of all, Borla stands behind every CrateMuffler with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.

Features and Benefits

CrateMufflers are tuned for specific engines
When installed on cataloged applications, they will reduce, or eliminate drone
Mufflers have directional flow. Outlet end has mounting bracket on it.
Add resonator 400939 to attain the Touring sound level

Product Details

Body Height (in.):	OEM
Body Height:	OEM
Body Length (in.):	14
Body Length:	14.000 in.
Body Width (in.):	OEM
Body Width:	OEM
Construction:	All Welded
Description:	CrateMufflerÃ¢â€žÂ¢
Grade Type:	Performance
Inlet Connection Type:	Pipe
Inlet Outside Diameter:	3.000 in.
Inlet Position:	Offset
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:	Offset
Outlet Size (in.):	3
Outlet Type:	OEM
Overall Length (in.):	19
Overall Length:	19.000 in.
Part Number:	bor400840
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:	Oval
Tip / Outlet Finish:	N/A
Title Extended:	CrateMuffler Chevrolet Small Block High Output 350/383/406 CID 3in Offset/Offset 14inx4.35inx9.10in S-Type Part # 400840
Title:	CrateMuffler Muffler Chevrolet Small Block 350/ 383/ 406 CID V8 High Output 3in Offset Inlet/ 3in Offset Outlet S-Type

Application Summary

CrateMuffler Small Block Chevrolet High Output 350/ 383/ 406 V8.

Part Type

Exhaust Muffler

Data: v4.2 - Upd: 2026-10-12 01:47:17

Features

3" Offset Inlet/ 3" Offset Outlet 4.35" x 9.10" Oval, 14" Long Body, 19" Overall Length
Add resonator 400939 to attain the Touring sound level
CrateMuffler(r)s are tuned for specific engines
Mufflers have directional flow. Outlet end has mounting bracket on it.
When installed on cataloged applications, they will reduce, or eliminate drone

Specifications

Product Attributes - UPC: 808422008402
Product Attributes - Brand: Borla
Product Attributes - Notes: S-Type style muffler.
Product Attributes - Quantity: Sold individually.
Product Attributes - Part Type: Mufflers
Product Attributes - Case Shape: Oval
Product Attributes - Reversible: No
Product Attributes - Width (in.): 9.000 in.
Product Attributes - Product Line: Borla S-Type CrateMufflers
Product Attributes - Inlet Location: Offset
Product Attributes - Inlet Quantity: 1
Product Attributes - Muffler Finish: Natural
Product Attributes - Outlet Location: Offset
Product Attributes - Outlet Quantity: 1
Product Attributes - Thickness (in.): 4.350 in.
Product Attributes - Muffler Material: 304 stainless steel
Product Attributes - Inlet Diameter (in.): 3.00 in.
Product Attributes - Internal Construction: Perforated tube
Product Attributes - Outlet Diameter (in.): 3.00 in.
Product Attributes - Case Exterior Length (in.): 14.00 in.
Product Attributes - Manufacturer's Part Number: 400840

Reference Information

Brand Name/s	Borla
StreetFX SKU	bor400840
SFX Item ID	4224565
Supplier Item Code	4224565
Manufacturer SKU	400840
Manufacturer UPC	808422008402
Alternative References	14in, 4.35in, 9in