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SKU: 40477 | UPC: 808422404778
Borla Universal Oval Transverse 2.5in Inlet/Outlet 19in x 10.25in x 5.5in Turbo XL Muffler 40477
This Borla 40477 specialty transverse flow muffler features a 2.5in offset inlet and dual 2.5in offset outlets in a compact 5.5in x 10.25in x 19in oval body, with 24in overall length. Designed originally for GM F-Body Camaro and Firebird applications mounted parallel to the rear axle, it serves as a universal part for custom exhaust builds on muscle cars and performance vehicles. Install it to gain power and torque increases, better fuel economy, extended engine life, and the signature Borla exhaust note.
Key Features
- Transverse Flow Design: Directs exhaust flow sideways for efficient scavenging, reduces backpressure, and delivers aggressive sound with improved flow over stock mufflers.
- 2.5in Single Offset Inlet / Dual 2.5in Offset Outlets: Inlet and one outlet on one end, second outlet on opposite end, supports Y-pipe or split configurations for versatile routing.
- Reversible Design: Flip for left- or right-side mounting, provides installation flexibility on F-Body or custom setups.
- T-304 Austenitic Stainless Steel: Corrosion-resistant material with 100% welded construction ensures durability, strength, and a lifetime of rust-free performance.
- High-Temp CFF Acoustic Core: Continuous-filament fiber controls sound while maintaining free-flow exhaust for power gains and throttle response.
Product Notes
- Un-notched necks designed for weld-in installation; for clamping, use Borla band clamps part 18004.
- Alternate version with notched necks is Borla 400498; pair with band clamp 18325 for bolt-on use.
- Ships natural mill finish; brush or polish before install for custom look.
Installation Notes
- Professional installation recommended.
- Weld-in necks require TIG welding for secure fit; clamp option needs band clamps 18004.
- Position transverse to axle on F-Body for original layout; reversible ends aid custom routing.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1982-1992 | Chevrolet | Camaro | V8 |
| 1982-1992 | Pontiac | Firebird | V8 |
| 1982-1992 | Pontiac | Trans Am | V8 |
| 1993-2002 | Chevrolet | Camaro | Z28, SS, Base V8 |
| 1993-2002 | Pontiac | Firebird | Formula, Trans Am V8 |
| Universal | Custom | Performance Vehicles | F-Body Style Exhaust |
Why Choose Borla?
- Leaders in stainless steel exhaust since 1978, starting with Ferrari and Rolls-Royce systems.
- Every muffler backed by Million-Mile warranty for unmatched reliability.
- Engineered and manufactured in the USA with motorsport-proven designs.
Frequently Asked Questions
-
Q: Will this muffler fit 1988-1992 Camaro V8?
A: Yes, transverse design mounts behind rear axle parallel to it; universal for custom V8 F-Body exhaust systems. -
Q: What material is used and does it rust?
A: T-304 stainless steel construction prevents rust; 100% welded for strength in all conditions. -
Q: What warranty covers this muffler?
A: Borla Million-Mile warranty protects against defects; covers the original purchaser for life.
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Protective cardboard box, dimensions 24in L x 11in W x 7in H
- Weight: 12.1 lbs
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