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Eddie Marine EMI Thunder Exhaust System with Standard Risers

for SBC and BBC applications, these systems are equipped with standard cast aluminum short risers, and are direct replacements for many stock Mercruiser manifolds in Bravo and Alpha applications using exhaust selector systems or Merc "S" pipes. Eddie Marine EMI Thunder manifolds are hardcoat anodized (except polished version) to military spec to prevent corrosion—and come standard with a black Fusioncoat finish, with optional finish colors available. Choose the model recommended for your watercraft engine. Eddie Marine EMI Thunder systems include: * EMI exhaust manifolds * Aluminum risers * Bolts, exhaust and riser gaskets, fittings

5.0 out of 5 stars ( 2 )

$1,798.00

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$1,999.00

Pacific Performance Engineering Exhaust Manifolds

Replacing your stock exhaust manifold and up-pipes should be the first step in building a high performance exhaust system. Pacific Performance Engineering exhaust manifolds are co-designed by Honeywell (Garrett) and PPE, using CAD software to maximize flow characteristics. The included up-pipe bellows are high-flow, internally sleeved, and manufactured from 11-gauge, 0.120 in. wall aircraft-grade stainless steel with a 2 in. O.D. The exhaust manifolds are machined from high-silicon moly cast iron; feature built-in bosses; and are pre-drilled and tapped for a 1/8 in. NPT EGT sensor. PPE exhaust manifolds will help lower exhaust gas temperatures, reduce drive pressure, and accelerate turbo spool-up while maintaining reliability. Order the model recommended for your application.

3.0 out of 5 stars ( 2 )

$1,520.99

Bully Dog Exhaust Manifolds

Bully Dog exhaust manifolds provide a considerable upgrade from old stock manifolds, thanks to all of their notable features. Their high-flowing, state-of-the-art CAD design provides quicker turbo spool, higher power output, and more fuel economy for Class 8 engines. They feature ceramic coating inside and out to ensure engine heat is more extensively utilized to spin the turbo. This means the special metal alloy beneath the coating will absorb and radiate less heat—up to 300 degrees less coming off the manifolds. Bully Dog exhaust manifolds not only look great, but they're fine-tuned in every aspect to improve the performance of your engine. Order the model recommended for your specific vehicle and engine size. Features, parts, and specs may include: * 80 to 100 degree reduced exhaust gas temperatures (EGTs) * Up to 30 hp increase * Up to 18 percent more airflow over stock due to tighter tolerances, porting, and polishing * 3-piece design ensures matching expansion/contraction with engine heat * Thicker walls than stock for greater durability and ceramic coating help lengthen gasket life * Engineered to eliminate known failure points for greater durability * Turbo studs (depending on application)

3.0 out of 5 stars ( 2 )

$1,975.00

Eddie Marine EMI Thunder Exhaust Manifolds

Eddie Marine EMI Thunder exhaust manifolds deliver exceptional performance at affordable prices. They're constructed from the highest strength 356 aluminum that is heat-treated to a T-6 condition after it is cast. The manifolds are then hardcoat anodized—a process that thickens and toughens the naturally occurring protective oxide in the aluminum—to prevent corrosion of all surfaces, including the internal water passages. EMI Thunder manifolds feature superior runner designs and port separation. They are available in a variety of Fusioncoat colors or highly polished (uncoated). Order the model recommended for your engine application.

Not Yet Reviewed

$1,699.00

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$1,826.00

ATP Exhaust Manifolds

ATP exhaust manifolds are high-quality replacements developed from the OE specs to ensure they'll install and perform like the originals. These manifolds are manufactured from premium metals, like cast iron and stainless steel. All models are machined to ensure that the flanges are flat, mount evenly, and do not leak. Hundreds of models are available for fitment on countless vehicle and engine applications. ATP exhaust manifolds are backed by a limited lifetime warranty.

3.65 out of 5 stars ( 98 )

$1,824.99

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$1,863.99

Dorman Direct-Fit Manifold Catalytic Converters

Dorman direct-fit manifold catalytic converters bring several parts together in one package for a turnkey installation. These top-quality exhaust manifolds are joined to the cat, and most models include gaskets and downpipe hardware, as well. Constructed from cast iron or stainless steel tubing, the units resist warping, cracking and leaks—and all undergo thorough inspection to ensure quality performance. Dorman direct-fit replacements deliver ease and convenience to your exhaust system upgrade. The kits are available for hundreds of makes and models.

4.15 out of 5 stars ( 20 )

$1,506.99