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SKU: 401664 | UPC: 808422016643
Borla Specialty Muffler 2.75in Center In/Out 6.75in Dia. 24in Body 29in OAL S-Type Un-Notched - Universal Truck Fit
Developed for truck applications and custom setups needing a long-body muffler, the Borla 401664 delivers aggressive S-Type sound with free-flow exhaust performance. This 29-inch overall length muffler features 2.75-inch center inlet/outlet necks, un-notched for weld-in installs on trucks and SUVs. T-304 stainless steel construction ensures lasting durability in demanding conditions.
Key Features
- T-304 Austenitic Stainless Steel: Resists rust completely for long-term reliability in harsh environments.
- 100% Welded Construction: Delivers maximum strength without weak points.
- Free Flow Design: Boosts horsepower and torque by reducing backpressure.
- CFF Acoustic Material: High-temperature fiber controls sound while maintaining flow.
- Reversible Design: Fits either direction for easy custom routing.
Product Notes
- Un-notched necks for weld-in installation; notched alternate is 400130.
- Requires wide band clamps 18327 (sold separately).
- Natural mill finish; brush or polish surface before install.
Installation Notes
- Professional installation recommended.
- Weld-in necks require precise cutting and welding skills.
- Wide band clamps 18327 ensure secure, leak-free connections.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | Various Trucks/SUVs | Custom Exhaust | All |
| 2009-2023 | Dodge | Ram 1500 | 5.7L HEMI |
| 2004-2023 | Ford | F-150 | 4.6L/5.4L/5.0L |
| 1999-2023 | Chevrolet/GMC | Silverado/Sierra 1500 | 5.3L/6.2L |
Why Choose Borla?
- USA-made with Million-Mile warranty for total confidence.
- Proven track record in racing and street performance.
- Engineered for precise fit and real-world power gains.
Frequently Asked Questions
-
Q: Will this muffler fit my specific truck?
A: Universal design suits most trucks/SUVs with 2.75" piping; confirm measurements for custom exhaust systems on Ram 1500, F-150, Silverado. -
Q: What material and finish does it have?
A: T-304 stainless steel in natural mill finish; polish or brush for custom look, resists corrosion fully. -
Q: What warranty and sound level?
A: Million-Mile warranty covers it; S-Type provides aggressive tone with controlled interior noise via CFF packing.
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Protective cardboard box, 30" L x 8" W x 8" H
- Weight: 19 lbs
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