Seaward Series Exhaust Systems - Seaward Series for 350MAG/6.2MPI and 8.2L Catalytic-Equipped

Seaward Exhaust Manifolds Spacer Kits for 8.2L Engines with D Shaped Cylinders Non-Coated Stainless Steel

These spacers are for Hardin Marine Seaward Exhaust Manifolds specifically. These spacers allow for a proper gasket seal when mounting your new Seaward manifolds. Spacers are 3/8" thick. Made from stainless steel. Sold in pairs. Includes two gaskets for the cylinder head side and longer bolts for headers with 3/8" flanges. The bolts are specifically the correct length for Seaward manifolds ONLY.

For manifolds on these applications:

• 8.2L Mag EC (H.O. Model) 2A041665 THRU 2A051740)
• 8.2L Mag EC (H.O. Model) (2A051742 & Up)
• 8.2L INBOARO (H.O.) EC - [2A041665 & UP.)
• 8.2L Mag EC (Base Model) - [ 2A051743 & UP)
• 8.2L MPI Bravo - [1G400000 THRU 1G499999]
• 8.2L Mag (H.O. Model ) - [ 1A351597 & UP]
• 8.2L MP) Bravo - [1G400000 THRU 1G499999]
• 8.2L INBOARD (Base) EC - [2A041665 & UP]
• 8.2L Mag /Base Model) - [1A351597 & UP]
• 8.2L Mag EC (Base Model) - 2A041665 THRU 2A051741)

• Eliminate Catalyzed Exhaust Systems
• 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 up to 400HP 
• Polished Stainless steel tailpipe is manufactured from premium 316L Stainless steel, 4" OD 
• 356T Aluminum Heat treated tubular style cast internal manifold core for header like performance
• Kit includes all bolts and gaskets needed for installation
• Requires Catalyst Eliminator Computer (See Related Parts)
• 2" Taller Than Stock Risers
• We need to know your current riser height to make sure the risers will fit. See this image, we need height labeled "C". or find the part number on the riser such as in this image.

NOTE: THIS SYSTEM REQUIRES A HIGH DEGREE OF TECHNICAL APTITUDE TO INSTALL AND CONFIGURE. YOU MUST CALL AND SPEAK WITH OUR TECH SUPPORT DEPARTMENT BEFORE GETTING A QUOTE.

WARNING! This system is not to be used on emissions regulated waterways. The intent of this system is to allow the running of a catalyzed marine engine without the catalytic converters installed and without triggering any ECU error codes. With the engine operating in this condition, the emissions control system will be rendered inoperative. For this reason, do not operate the vessel on emissions regulated waterways. This system is not legal for any purpose other than testing purposes and not for use on any state or federal waterway.

• Eliminate Catalyzed Exhaust Systems
• 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 up to 400HP 
• Polished Stainless steel tailpipe is manufactured from premium 316L Stainless steel, 4" OD 
• 356T Aluminum Heat treated tubular style cast internal manifold core for header like performance
• Kit includes all bolts and gaskets needed for installation
• Requires Catalyst Eliminator Computer (See Related Parts)
• We need to know your current riser height to make sure the risers will fit. See this image, we need height labeled "C". or find the part number on the riser such as in this image.

NOTE: THIS SYSTEM REQUIRES A HIGH DEGREE OF TECHNICAL APTITUDE TO INSTALL AND CONFIGURE. YOU MUST CALL AND SPEAK WITH OUR TECH SUPPORT DEPARTMENT BEFORE GETTING A QUOTE.

WARNING! This system is not to be used on emissions regulated waterways. The intent of this system is to allow the running of a catalyzed marine engine without the catalytic converters installed and without triggering any ECU error codes. With the engine operating in this condition, the emissions control system will be rendered inoperative. For this reason, do not operate the vessel on emissions regulated waterways. This system is not legal for any purpose other than testing purposes and not for use on any state or federal waterway.

NOTE: THIS SYSTEM REQUIRES A HIGH DEGREE OF TECHNICAL APTITUDE TO INSTALL AND CONFIGURE. YOU MUST CALL AND SPEAK WITH OUR TECH SUPPORT DEPARTMENT BEFORE GETTING A QUOTE.

These systems feature all of the superb Seaward features along with a 316L polished intermediate connecting tailpipe allowing use or re-use of the boats original tailpipe just as a direct replacement to the factory headers. These systems are one of kind custom built systems per application and are priced based on a complete filled out measurement sheet that must be provided by the purchaser.

Here's the facts: There is no other performance exhaust manifold system on the market today that with as many features and advancements in construction PERIOD. Starting with a 356T Heat treated tubular style cast internal core that has been optimized to flow with the technology design and shape and design of a tubular header. By extending the runners and separating the exhaust pulses to the collector this system produces maximum power in a compact design.

More Facts: 1000 hour salt spray coating. That's right this industry has never seen these types of processes. These products are extending the naval and aerospace program products as much as ten years. Sure the finish is that of a show piece, but it's truly what you can't see that sets these systems apart. Underneath the thick non-porous billet heat treated aluminum casing lies the most exceptional foundation of corrosion protection found anywhere. A hydrogen infused zinc process is applied to each manifold. Until now salt spray testing could merely only withstand 100-150 hours of sustained exposure, Today those numbers are 1000 hours of durability.