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MERCRUISER COMPLETE EXHAUST MANIFOLD SET 5.7L & 5.0L (CAST IRON) | GLM Part Number 58232
For All Mercruiser GM V8 -4 inch Elbow -No Spacer In the V8 GM Small Block, GLM's fully tuned design guides exhaust gases directly to the riser without turbulance and back pressure. This increases the engine's performance by 10%. These GLM manifolds also feature an additional 40% increase in water cooling area that decreases the manifold's overall body temperature significantly. In GLM's Mercruiser replacement 4 inch riser, there are two additional water jackets. This allows a higher volume of water to flow through the riser, keeping the engine cooler.

Price is $792.00

Price: $792