Product Summary

Header-Back Exhaust System Type, Dual Single or Dual

  • Specially designed for the 1964-67 GM A-Body vehicles
  • Engineered for the person who is looking for a complete Header-back dual exhaust system with an aggressive tone
  • Made from durable mandrel bent 16 gauge stainless steel tubing
  • Offers a moderate exterior exhaust tone
  • It includes all necessary hangers and hardware for easy installation
See more details

Key Specs

MFG. Part #817412
Exhaust System TypeHeader-Back
Single or DualDual
Exhaust Tubing Diameter2-1/2 Inch
Exhaust System Kit TypeDirect Fit
See more specs

Need To Know

Quick and Easy Returns

Return Policy

Flowmaster 817412 Details

For the person who is looking for a complete Header-back dual exhaust system with an aggressive tone. With easy fit in mind, these systems are mandrel bent for maximum performance and include specially selected mufflers. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.

  • Mandrel bent 16 gauge stainless steel tubing
  • Aggressive Sound Exterior Exhaust Tone
  • Includes hangers and hardware for easy installation
  • Header-back System

Application

1965-1967 Buick Gran Sport
1964-1967 Buick Skylark
1964-1967 Chevrolet Chevelle
1964-1967 Pontiac GTO
1964-1967 Pontiac LeMans

Charts

Flowmaster 817412 Specifications

KEY SPECS
MFG. Part #817412
BrandFlowmaster
Exhaust System TypeHeader-Back
Single or DualDual
Exhaust Tubing Diameter2-1/2 Inch
Exhaust System Kit TypeDirect Fit
GENERAL
Exhaust ExitDual Split Side
Sound LevelAggressive
Muffler(s) IncludedYes
Muffler Quantity2
Muffler ConnectionsSingle Inlet | Single Outlet
Drivetrain2WD
Exhaust Tip IncludedNo
Exhaust Tip Quantity0
Exhaust System Material409S Stainless Steel
Exhaust System FinishNatural
Exhaust Pipe ColorNatural
Muffler SeriesSuper 40 Series
Muffler Material409 Stainless Steel
Muffler ColorNatural
Inlet QuantityDual
Inlet Size2.50"
Outlet Size2.50"
Tailpipe Diameter2.5"
Catalytic Converter(s) IncludedNo
Hardware IncludedYes
Heat ShieldNo
Sold in QuantityKit
GTIN Code700042024025
NotesDue to variations in different manufacturers headers, modifications to the length and or angles of the intermediate pipes may be required when connecting to the header collectors.
Material TypeStainless Steel
Exit LocationSide

Questions & Answers

Customer Impersonation Script