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Borla CrateMuffler SBC Hot 350/383 3 inch Offset/Center 14in x 4.35in x 9in Oval Muffler-Borla-BOR400840
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Borla CrateMuffler SBC Hot 350/383 3 inch Offset/Center 14in x 4.35in x 9in Oval Muffler

Borla
BOR400840
808422008402
Muffler
12 Units In Stock - Ships Next Business Day
$ 354.99 $ 316.99
FREE Ground Shipping!
$ 316.99

SKU: 400840   |   UPC: 808422008402

Borla 400840 CrateMuffler Chevrolet Small Block 350/383/406 CID V8 High Output 3" Offset/Offset S-Type Oval Muffler

The Borla 400840 CrateMuffler is purpose-built for Small Block Chevrolet high output 350/383/406 CID V8 crate and custom engines. It delivers aggressive Borla sound, gains in horsepower and torque, better fuel economy, and drone elimination through directional tuning. Install this 14" x 4.35" x 9.1" oval muffler for precise fit and motorsport performance in hot rods, muscle cars, and engine swaps.

Key Features

  • T-304 Stainless Steel: Corrosion-resistant material ensures durability in all conditions.
  • Directional Design: Tuned for SBC engine family with outlet marked by welded bracket to cut drone.
  • Precise Sizing: 14" body length, 19" overall, 3" offset inlet/outlet for seamless 3" piping integration.
  • CNC Manufacturing: Computer-controlled production for exact fit and flow efficiency.
  • Engine-Specific Tuning: Optimizes sound and power for 350/383/406 CID high output V8s.

Product Notes

  • Muffler is directional; align outlet end with bracket toward rear of vehicle.
  • Intended for crate and custom high output Small Block Chevy V8 builds.
  • Ships ready for 3" exhaust systems with pipe-style connections.

Installation Notes

  • Professional installation recommended.
  • Verify inlet/outlet orientation before welding or clamping.
  • Compatible with standard 3" exhaust hangers and hardware.

This Part Fits

Year Make Model Submodel
Crate Engines Chevrolet Small Block V8 350/383/406 CID High Output
Custom Builds Chevrolet SBC Engine Swap Hot Rod/Muscle Car

Why Choose Borla?

  • Pioneer in stainless steel exhaust for classics and race cars.
  • Delivers power gains, torque, and signature exhaust note.
  • Million-Mile Warranty covers every CrateMuffler.

Frequently Asked Questions

  • Q: Which engines fit this CrateMuffler?
    A: Designed for Chevrolet Small Block 350/383/406 CID V8 high output crate and custom motors.
  • Q: What material construction?
    A: T-304 stainless steel, all-welded for strength and rust resistance.
  • Q: What warranty coverage?
    A: Backed by Borla Million-Mile Warranty for performance and longevity.

Shipping & Handling

  • Method: UPS Ground or FedEx Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Original Borla box, 21" x 10" x 10"
  • Weight: 11 lbs

Request For Information

Have questions about Borla CrateMuffler SBC Hot 350/383 3 inch Offset/Center 14in x 4.35in x 9in Oval Muffler? Fill out the form below and we'll get back to you by the next business day.
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Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

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