aFe Power BladeRunner Exhaust Manifold - Ductile Iron 84502 Kit includes channel (2" x

Kit includes channel (2" x 21

Pro-Series 5

C3500 Pickup

2009-2011 Chevrolet Avalanche

1989-1989 Chevrolet C3500

aFe Power BladeRunner Exhaust Manifold - Ductile Iron 84502 Kit includes channel (2" xBolt on instant performance by upgrading your restrictive factory manifold with this BladeRunner ported manifold. Designed to outflow the stock manifold by 12% for improved throttle response, this BladeRunner manifold has both the inlet and the outlet ports machined for a smooth transition and optimal flow path. Constructed from heavy walled, ductile iron to resist warping and cracking, this BladeRunner will outlast OE and factory replacement