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Big Block Chevy Stainless Marine Exhaust Manifolds

Big Block Chevy Stainless Marine Exhaust Manifolds
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Availability: These BBC Marine Manifolds are a new product and currently built-to-order. Current lead times are 8-12 weeks.
Pricing: $2,364.95

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Big Block Chevy Stainless Marine Exhaust Manifolds

Why pay $15,000 and wait 10 months for polished water-jacketed marine headers or settle for yet another cast manifold that will crack and leak in the next 2 years?

Introducing our complete line up of Stainless Marine Exhaust Manifolds. Specifically designed for durability, cost efficiency, and compact fitment, all without a compromise to performance.

These Big Block stainless marine manifolds come standard with 2" primary exhaust tubes and a 2.50" collector, these are shrouded in a complete water jacket to maintain cool temperatures. Offered in 304 or 316 stainless steel, and purge-TIG welded, we pressure check every system to ensure proper welds and the best in exhaust manifold durability.

The Exhaust runners + Exhaust manifolds are built from stout 11ga (0.120") thick material to improve strength and durability. The water jackets are hand-fit from 16ga stainless steel to give the best internal clearance to maximize water flow.

The manifolds terminate in a 3" v-band flange, allowing for easy adaptation to your risers, tailpipes, or existing exhaust.

We also offer additional sizing with 3" collectors + 3.5" water jackets for higher horsepower configurations, allowing for 3.5" or 4" diameter tailpipe + riser applications.

Each system is hand fit to your exact specifications, and can be offered in multiple configurations.

These marine manifolds come standard with 3/8" water inlet tubes and -12AN fittings on the outlet for the v-band crossover. We can also adjust these sizes to best fit your needs.

Every system also comes standard with a water injection rail, complete with rubber hose and accompanying clamps. The inlet to the water injection rail uses a standard -12AN fitting, though this is easily modified to fit your needs.

At 1/5 the price of a custom jacketed header and drastic improvements in looks + durability compared to old fashioned cast iron manifolds, our stainless steel marine exhaust manifolds are the perfect solution to your marine exhaust needs.

These Marine Manifolds have the following finish options available:

  • Brushed Stainless (Standard)
  • Ceramic Coating (Satin Black, Satin Silver, Other [see color list])
  • Mirror Polish



  • SHM-MM-1490-200-250-304
  • SHM-MM-1490-200-250-304
  • Stainless Headers
  • These BBC Marine Manifolds are a new product and currently built-to-order. Current lead times are 8-12 weeks.
  • New


Shipping Information

  • Item Requires Shipping
  • 35.0 lbs.
  • W25.0000” x H13.0000” x L13.0000”
  • $25.00
  • This item ships in its own box.

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