This Part has options, please click the button below to order.
620-38153 + Option(s)
- Manifolds are powder-coated for corrosion protection
- Optional "Ocean Series" Extreme Corrosion Treatment available for additional interior corrosion protection
- Perfect for use on OEM engines 4.8 to 6.2L up to 500HP (Camshaft duration not to exceed 234 degrees @.050 Duration)
- Polished Stainless steel tailpipe is manufactured from premium 316L Stainless steel, 4" OD
- 356T Cast Aluminum Heat treated tubular tuned runner header style internal manifold core for header like performance
- Drawformed Non-porous manifold shells are powder-coated for corrosion protection
- Silent choice, captains call, and select sound exhaust diverter system compatible
- High Performance Risers include O2 Sensor bungs and plugs.
- Kit includes all bolts and gaskets needed for installation
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This Part has options, please click the button below to order.
620-38155 + Option(s)
- Manifold is powder-coated for corrosion protection
- Optional "Ocean Series" Extreme Corrosion Treatment available for additional interior corrosion protection
- Perfect for use on OEM engines 4.8 to 6.2L up to 400HP (Camshaft duration not to exceed 218 degrees @.050 Duration)
- Polished Stainless steel tailpipe is manufactured from premium 316L Stainless steel, 4" OD
- 356T Cast Aluminum Heat treated tubular tuned runner header style internal manifold core for header like performance
- Drawformed Non-porous manifold shells are powder-coated for corrosion protection
- Silent choice, captains call, and select sound exhaust diverter system compatible
- Low Exit Risers include O2 Sensor bungs and plugs.
- Kit includes all bolts and gaskets needed for installation
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This Part has options, please click the button below to order.
620-38156 + Option(s)
- Manifolds are powder-coated for corrosion protection
- Optional "Ocean Series" Extreme Corrosion Treatment available for additional interior corrosion protection
- Perfect for use on OEM engines 4.8 to 6.2L up to 435HP (Camshaft duration not to exceed 228 degrees @.050 Duration)
- Polished Stainless steel tailpipe is manufactured from premium 316L Stainless steel, 4" OD
- 356T Cast Aluminum Heat treated tubular tuned runner header style internal manifold core for header like performance
- Drawformed Non-porous manifold shells are powder-coated for corrosion protection
- Silent choice, captains call, and select sound exhaust diverter system compatible
- XL Risers include O2 Sensor bungs and plugs.
- Kit includes all bolts and gaskets needed for installation
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This Part has options, please click the button below to order.
620-38152 + Option(s)
- Manifold is powder-coated for corrosion protection
- Optional "Ocean Series" Extreme Corrosion Treatment available for additional interior corrosion protection
- Perfect for use on OEM engines 4.8 to 6.2L up to 400HP (Camshaft duration not to exceed 218 degrees @.050 Duration)
- Polished Stainless steel tailpipe is manufactured from premium 316L Stainless steel, 4" OD
- 356T Cast Aluminum Heat treated tubular tuned runner header style internal manifold core for header like performance
- Drawformed Non-porous manifold shells are powder-coated for corrosion protection
- Silent choice, captains call, and select sound exhaust diverter system compatible
- Risers include O2 Sensor bungs and plugs.
- Kit includes all bolts and gaskets needed for installation
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This Part has options, please click the button below to order.
620-38154 + Option(s)
- Manifolds are powder-coated for corrosion protection
- Optional "Ocean Series" Extreme Corrosion Treatment available for additional interior corrosion protection
- Perfect for use on OEM engines 4.8 to 6.2L up to 425HP (Camshaft duration not to exceed 224 degrees @.050 Duration)
- Polished Stainless steel tailpipe is manufactured from premium 316L Stainless steel, 4" OD
- 356T Cast Aluminum Heat treated tubular tuned runner header style internal manifold core for header like performance
- Drawformed Non-porous manifold shells are powder-coated for corrosion protection
- These Lower Exit Risers are perfect for many inboard ski/wake or Jet Boat applications requiring additional exhaust exit downslope
- Include O2 Sensor bungs and plugs
- Kit includes all bolts and gaskets needed for installation
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620-32494 Replacement Riser Gasket for LS Marine Aluminum Exhaust Manifold System
Replacement Riser Gasket for the 620-32940 or 620-32942 LS Exhaust Systems or IMCO LS Exhaust Systems.
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620-32490 ECM Bracket for LT Marine Aluminum Exhaust Manifold System
Add a ECM bracket to the 620-32940 or 620-32942 LT Exhaust Systems or IMCO LT Exhaust Systems.
NOTE: If using with a riser mounted O2 Sensor, modification to bracket will be required or O2 sensor moved inboard.
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620-32492 Shift Bracket for LS Marine Aluminum Exhaust Manifold System
Add an Shift bracket to the 620-32940 or 620-32942 LS Exhaust Systems or IMCO LS Exhaust Systems.
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620-32496 Exhaust Gaskets for LS Marine Aluminum Exhaust Manifold System
Replacement Exhaust Gaskets for the 620-32940 or 620-32942 LS Exhaust Systems or IMCO LS Exhaust Systems. Sold in pairs for one engine.
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620-32941 Extra O2 Bung for LS Marine Aluminum Exhaust Manifold System
The 620-32940 Exhaust System comes with a single O2 Bung, however some systems require a 2nd O2 bung. Order this part alongside a 620-32940 system to have two O2 bungs.
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