Genuine GM 12580420 TBSS Intake Manifold
- Bare intake manifold by itself.
- Highest Performing factory Cathedral Port Intake
- Excellent upgrade for 1999-2006 4.8, 5.3 and 6.0 LS Truck Engines.
- Intake #12580420 has a PCV port and is configured for the 1999-2006 style MAP sensors
- See part # 12660709 for matching fuel rails