| Generic Aluminum Replacement Exhaust SystemsFeatured here are generic aluminum manifolds and kits for various applications. Click on the part number to check pricing or place an order. 
  
    
      | HGE Exhaust - Direct Flow Aluminum Manifold 
          System
           
 |  
      |  | These direct-flow marine replacement 
        exhaust systems are manufactured to be direct replacements for stock Mercruiser cast iron exhaust manifolds and risers. These manifolds and risers are patterned directly after Mercrusier cast iron ones, but their lighter aluminum construction can take 50 lbs off your boat! 
          
            
              | Part
                No. | Description |  
              | 654-200 | Big Block Chevy Exhaust Kit (Manifolds, Risers, Bolts & Gaskets) |  
              | 654-100 | Small Block Chevy Exhaust Kit (Manifolds, Risers, Bolts & Gaskets) |  
              | 430-53-1022 | Big Block Ford Exhaust Kit (Manifolds, Risers, Bolts & Gaskets) |  
              | 654-6219 | Mercury 470 Replacement Aluminum Exhaust Manifold (each) |  
              | 654-9011A | Big Block Exhaust Manifolds (each) |  
              | 654-7114A | Small Block Exhaust Manifolds 
              (each) |  
              | 654-4354A | Aluminum Risers (each) |  |  
      | Indmar - Universal Center-Rise Exhaust System
 
 |  
      |   | These manifolds have individual primaries for more torque 
and horsepower over your stock center rise or log style 
exhaust manifolds.  This is a great choice as an upgrade from log 
style manifolds. These manifolds have a steep down slope originally designed for jet boat applications. 
          
            
              | Part
                No. | Description |  
              | 430-53-1021 | Big Block Chevy Jet Kit with Aluminum Riser |  
              | 430-53-2009 | Small Block Ford with Aluminum Riser |  |  
      | Hardin
        Marine Exhaust - 455 Olds Square Exhaust Manifold
 
 |  
      |   | This is the popular square Oldsmobile exhaust 
        manifold. The manifolds and risers themselves are no longer available, however replacement gaskets and accessories are. 
          
            
              | Part
                No. | Description |  
              | 
620-21074 | Berkeley Exhaust Manifold,
                Jet, Olds (pair only) |  
              | 620-24170 | Riser Gasket (each) |  
              | 620-24171 | End cap Gasket (each) |  
              | 655-453 | Exhaust Gasket (pair) |  
              | 620-45510 | Exhaust Manifold Bolts (per manifold) |  
              | 620-45511 | End Cap Bolt Kit (per manifold) |  
              | 620-09116 |      Riser Stud Kit (per manifold) |  |  |