XS Xtreme Machine Polished Single Plane BBC Rectangular Port Intake Manifold 

"XS" Xtreme Machine Polished Single Plane Big Block Chevy Rectangular Port Intake Manifold

This design is very efficient and produces excellent power in the RPM range most often used in performance boating. This intake is patterned after the most respected intake in the marine industry the HP500 carbureted intake manifold. With quite possibly more victories than any single other intake on the market, you know you're on the winning track. This intake features one of the fasted torque curves anywhere and all power boaters know torque is what makes the difference. If you're looking for the most for you money you'll demand the Hardin "XS" Xtreme Intake.

At last you can buy an intake manifold specifically designed to meet the unique needs a performance boat demands from a company that knows what performance is. Hardin Marine has been building manifolds for over 40years. At last you the performance boater can take advantage of the state of the art technology in each of these new manifolds. Here are just a few of the state of the art features that keep Hardin Marine Intakes leading the race.

Dual Distributor Hold Downs
Sometimes the standard single distributor hold down is not enough. so wehave provided dual distributor hold downs on all Hardin Marine intake manifolds.

Four Corner Water Ports
All Hardin Marine performance manifolds feature two extra water ports at the rear of the manifold, a feature normally only found in manifolds costing hundreds more. Some enthusiasts have found that plumbing a line between these two rear ports can reduce engine overheating. Many racers also find these ports to be an advantageous special feature for plumbing special additional water lines.

Other Special Features

• All ports are very accurately positioned due to advanced casting techniques.
• All machined polished manifolds are rough polished to a remove some major casting marks but are NOT an mirror polish type finish (see photos).
• Just before packing, every tapped hole in each manifold is chased with a tap to clear out polishing residue and to assure the threads are not damaged.