Smeding Diesel T4 2 PC Exhaust Manifold Programmers & Chips~Programmers & Tuners 2008 GMC Sierra 2500 HD

2008 GMC Sierra 2500 HD SLE

1993 GMC C1500 Sierra SLX

3500 was engineered to minimize air restriction and flow better than stock

2018 Toyota Prius C Four

1998 Chevrolet C1500 Cheyenne

Smeding Diesel T4 2 PC Exhaust Manifold Programmers & Chips~Programmers & Tuners 2008 GMC Sierra 2500 HDSmeding Diesel T4 2 PC Exhaust Manifold 3rd Gen Style T4 Manifold HIGH DUCTILE IRON FOR SUPERIOR STRENGTH PRESSED HYDRAULIC JOINTS FOR LEAK FREE CONNECTION GUARANTEEING NO LEAKS AT ALL TEMPERATURE RANGES. HIGH DENSITY GREEN SAND CASTING MOLD FOR OPTIMAL PORT FLOW FOR PEAK PERFORMANCE CBM MACHINED SURFACES FOR TRUE FLATNESS ADDED GUSSETS FOR SUPERIOR STRENGHT.