Borla 400840 CrateMuffler SBC Hot 350/383 3" Offset/Center Performance Muffler

Product Overview

• Borla 400840 CrateMuffler® Performance Muffler for Small Block Chevy (350/383)

Features

• Premium T-304 stainless steel construction for corrosion resistance and durability
• 3" offset inlet and 3" center outlet configuration for custom exhaust applications
• S-Type internal design delivers a balanced yet aggressive performance tone
• CrateMuffler® tuned for Small Block Chevy applications like 350/383 CID engines
• Precision CNC manufacturing for consistent quality and flow characteristics
• Directional design - outlet end identifiable by the welded mounting bracket
• Can be paired with optional resonator (e.g., part 400939) for refined sound control
• Backed by Borla's Million-Mile Warranty on construction quality

Specifications

• Part Number: 400840
• Type: CrateMuffler® performance muffler
• Material: T-304 Stainless Steel
• Inlet Diameter: 3" Offset
• Outlet Diameter: 3" Center
• Body Dimensions: 14" x 4.35" x 9"
• Sound Level: S-Type aggressive tone
• Application: Universal - custom exhaust systems, crate engine builds

Included Components

• 1x Borla 400840 CrateMuffler® performance muffler

Product Description

The **Borla 400840 CrateMuffler®** is a high-performance exhaust muffler engineered for **Small Block Chevy (SBC) applications such as 350/383 cubic inch engines** and custom performance builds. With a **3" offset inlet and 3" center outlet**, this muffler is ideal for bespoke exhaust fabrication projects where standard OE mufflers are not suitable. Its internal **S-Type design** delivers an aggressive yet balanced sound that enhances the character of high-output V8 engines.

Constructed from premium **T-304 stainless steel** and precision CNC-manufactured, the 400840 offers durability and performance for custom exhaust systems. The muffler's directional design - indicated by the welded mounting bracket - ensures correct orientation for smooth exhaust flow and an impactful sound profile. Pair it with optional accessories like resonators to fine-tune tone, and back it with Borla's **Million-Mile Warranty** for peace of mind. Although universal, this muffler is especially well-suited for muscle cars, hot rods, and crate engine applications where performance and sound quality are priorities.