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Seaward Series Exhaust Systems - Seaward Series Parts, Accessories and Tailpipes

1-1/2" Aluminum Pencil Anode Kit w/ Plug
Your Price:
$8.99

1-1/2" Aluminum Pencil Anode Kit w/ Plug

620-38126

1-1/2” Aluminum Pencil Anode Kit w/ Plug

  • Plug: 3/4"
  • Anode: 3/4"
  • Anode Length: 1-1/2"
  • Anode Thread: 1/2-13
  • GLM 12693

For V8 Big Block


1-1/2" Aluminum Pencil Anode w/o Plug
Your Price:
$3.99

1-1/2" Aluminum Pencil Anode w/o Plug

700-12694

1-1/2” Aluminum Pencil Anode Kit w/o Plug

  • Anode: 3/4"
  • Anode Length: 1-1/2"
  • Anode Thread: 1/2-13

For V8 Big Block


Seaward Aluminum Exhaust Manifold Anti-Corrosion Kit
Your Price:
$42.95

Seaward Aluminum Exhaust Manifold Anti-Corrosion Kit

620-38125

This add-on anti-corrosion kit fits Hardin Marine Seaward Series Exhaust Systems or any other aluminum manifold with a 3/4" NPT port.

Inlet Fitting with Drain Plug Provision
Your Price:
$8.99

Inlet Fitting with Drain Plug Provision

620-38127

Add an inlet with a drain provison with this fitting. Fits 3/4" NPT port. 1" Hose barb. See related parts for drain plug sold separately. GLM 13991, Mercruiser 22-862210A01.

Water Inlet Tee Fitting for SBC Dry Joint Seaward Systems
Your Price:
$89.99

Water Inlet Tee Fitting for SBC Dry Joint Seaward Systems

620-38130

Tee fitting.  3/4" NPT port. 1" Hose barbs. Typically used in SBC Dry Joint Seaward Exhaust applications.

Riser Jump Hose
Starting From:
$18.99

This Part has options, please click the button below to order.

Riser Jump Hose

620-380 + Option(s)

Riser Jump Hose

Replacement Riser Jump Hose for Seaward Risers


Seaward Series Replacement Big Block Chevy Manifolds
Starting From:
$1,799.99

This Part has options, please click the button below to order.

Seaward Series Replacement Big Block Chevy Manifolds

620-38 + Option(s)

  • Standard Manifold is powder-coated for corrosion protection
  • Optional "Ocean Series" Extreme Corrosion Treatment available for additional interior corrosion protection 
  • 356T Aluminum Heat treated tubular style cast internal manifold core for header like performance
  • Silent choice, captains call, and select sound exhaust diverter system compatible
  • Sold in pairs
  • No tailpipes included, replacement manifolds only!

Seaward Series Replacement Small Block Chevy Manifolds
Starting From:
$1,599.99

This Part has options, please click the button below to order.

Seaward Series Replacement Small Block Chevy Manifolds

620-38 + Option(s)

  • Standard Manifold is powder-coated for corrosion protection
  • Optional "Ocean Series" Extreme Corrosion Treatment available for additional interior corrosion protection 
  • 356T Aluminum Heat treated tubular style cast internal manifold core for header like performance
  • Silent choice, captains call, and select sound exhaust diverter system compatible
  • Sold in pairs
  • No tailpipes included, replacement manifolds only!

Seaward Series Replacement 496 Manifolds
Your Price:
$3,299.99

Seaward Series Replacement 496 Manifolds

620-38087

  • Manifold is powder-coated for corrosion protection
  • "Ocean Series" Extreme Corrosion Treatment included for additional interior corrosion protection 
  • 356T Aluminum Heat treated tubular style cast internal manifold core for header like performance
  • Silent choice, captains call, and select sound exhaust diverter system compatible
  • Sold in pairs
  • No tailpipes included, replacement manifolds only!

Seaward Standard Risers
Your Price:
$1,085.99

Seaward Standard Risers

620-38033

Seaward Standard Risers - Sold As A Pair


Seaward 3" Taller Risers
Your Price:
$1,595.99

Seaward 3" Taller Risers

620-38083

Seaward 3" Taller Risers - Sold As A Pair


Seaward 6" Taller Risers
Your Price:
$2,099.99

Seaward 6" Taller Risers

620-38107

Seaward 6" Taller Risers - Polished - Sold In Pairs

Polished Stainless steel tailpipe is manufactured from premium 316L Stainless steel, 4" OD

These tailpipes feature a 4" O.D and a 3-1/2" I.D. for maximum exhaust flow.


Seaward BBC XL Bravo Tailpipes
Your Price:
$1,295.99

Seaward BBC XL Bravo Tailpipes

620-38058

Seaward XL BBC Bravo Tailpipes - Sold As A Pair


These stainless steel tailpipes are manufactured from premium 316l Stainless steel not 304/303 low grade SS many competitors use. These tailpipes feature a 4" O.D and a 3-1/2" I.D. for maximum exhaust flow.

Custom 8.2L Seaward Risers 11-3/8" Tall
Your Price:
$1,499.99

Custom 8.2L Seaward Risers 11-3/8" Tall

620-38098

Seaward Custom 8.2L Risers - Sold As A Pair, 11-3/8" tall

Limited stock available, custom height risers. If you are in the market for a Seaward 8.2L system talk to a salesman to see if these fit your application, as it may have considerable cost reductions over building new risers.


Seaward HP500 Standard BBC Tailpipes
Your Price:
$2,399.99

Seaward HP500 Standard BBC Tailpipes

620-38059

Seaward HP500 Standard BBC - Polished - Sold as a pair

Polished Stainless steel tailpipe is manufactured from premium 316L Stainless steel, 4" OD

These tailpipes feature a 4" O.D and a 3-1/2" I.D. for maximum exhaust flow. These systems are perfect for engines rated up to 525HP.


525 Seaward Risers
Your Price:
$2,375.99

525 Seaward Risers

620-38034

Seaward Standard Risers - Sold As A Pair


525 Seaward Tall Risers
Your Price:
$2,699.99

525 Seaward Tall Risers

620-38042

525 Seaward Tall Risers - Polished

Tailpipe not included

Seaward 600/700 Risers
Your Price:
$4,199.99

Seaward 600/700 Risers

620-38093

Seaward 600/700 Risers - Polished

Tailpipe not included

Below Platform Seaward Risers
Your Price:
$2,275.99

Below Platform Seaward Risers

620-38104

Below Platform Seaward Risers - Sold as a pair

Low Port Polished Stainless steel tailpipe is manufactured from premium 316L Stainless steel, 4" OD. These tailpipes feature a 4" O.D and a 3-1/2" I.D. for maximum exhaust flow.


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