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- In Stock
- Ships out in 2-3 business days
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- Assembly
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- Part #: F13817412
- Mfr #: 817412
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1965-1967 Buick Gran Sport Exhaust System - Flowmaster - Flowmaster American Thunder Kit, 2.5 in. Main Piping Diameter, Dual, Split side, Natural, Stainless steel
- Product Details
- Manufacturer Info
- Extended Warranty
- Related Products
- Fitment Info
Flowmaster's American Thunder exhaust system is designed with the latest technology to provide better performance. This system offers improved acceleration and passing power as well as increased fuel mileage. Engineered and dyno-tested for each application, the tubes in each kit are mandrel-bent for superior air flow and are made to deliver an aggressive exhaust tone.
Features:
- Includes hangers and hardware for easy installation
- Constructed from mandrel bent 16 gauge aluminized tubing
- Has aggressive exterior exhaust tone
- Dyno tuned for maximum performance
- Made in the USA
- Special Note: Contains H-Pipe; Tail pipe in turn down style
As a solution to the problem of excessive noise experienced in Californian racing events back in 1983, Flowmaster creator Ray Flugger designed and patented the first racing silencers that maintained engine power. At present, Flowmaster is still at the forefront of muffler and exhaust system technology. With its superior Research and Development arm, Flowmaster is able to manufacture high performance mufflers, exhaust systems, and accessories that produce tone and sound levels that suit the customer's preferences.
- Series: Flowmaster American Thunder Kit
- Material: Stainless steel
- Color/Finish: Natural
- Quantity Sold: Assembly
- Muffler Sound Level: Aggressive
- Recommended Use: Performance
- Advertised Power Gains: On average, 5-7% performance increase over stock systems
- Anticipated Ship Out Time: 2-3 business days
- Attachment Style: Weld-On (Recommended) or Clamp-On
- Exit Location: Split side
- Exit Quantity: Dual
- Includes: H-pipe, mounting hardware
- Main Piping Diameter: 2.5 in.
- Muffler Configuration: Single inlet and outlet
- Muffler Finish: Natural
- Muffler Material: Stainless steel
- Muffler Quantity: Two
- Muffler Type: Chambered
- Notes: Tail pipe in turn down style
- System Type: Header-back
- Warranty: Lifetime Flowmaster limited warranty
- Fit note: USA Built Vehicle
- 1967-1967: All Submodels; All Engines;
- 1967-1967: Base; 8 Cyl 5.6L;
- 1965-1967: Base; 8 Cyl 6.6L;

