MERCRUISER EXHAUST MANIFOLD 5.0L & 5.7L (CAST IRON) [51230]

Product Description
In the Mecruiser Exhaust Manifold for 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 up to 10%.
These GLM manifolds also feature an additional 40%
increase in water cooling area that decreases the 
manifold's overall body temperature significantly.

*All manifolds are powdercoated black for maximum corrosion protection*

**Cast Iron manifolds come with a 3 year warranty**

Note: Will Not fit dry joint risers (Engine Serial Numbers starting in OMxxxxxxxx ) Unless Both manifold and risers are replaced
Use riser 51140 to complete the set

Product Information 
Manufacturer: GLM Products, Inc. 
Mercury Part Number: 860246Q11 
OSCO Part Number: 7114B2