Mr. Gasket Fabricated Aluminum Valve Covers with Breather Holes - Long Bolt Fuel System Upgrades and Parts 4L exhaust Manifold set is

4L exhaust Manifold set is crafted with a heavy duty 0

an integrated oil cap

a smooth-wall Y-bridge evenly distributes air to all eight cylinders

Unlike typical ball and seat style regulators

These vehicle were manufactured with two different diameter rear axles

Mr. Gasket Fabricated Aluminum Valve Covers with Breather Holes - Long Bolt Fuel System Upgrades and Parts 4L exhaust Manifold set isFabricated from lightweight aluminum and features a smooth top with a baffled opening and long mounting bolts. Has 1 4 inch thick 1 piece mounting flange which ensures a flat mating surface along with aluminum tubes welded into the mounting holes to maintain rail flatness and increase valve cover strength. Includes mounting hardware.