GLM Manifolds
GLM Manifolds are Superior in the Aftermarket Marine Parts Industry.

Designed to Increase Performance, Reduce Back Pressure
and Add More Horsepower to Your Engine!

Our fully tuned design guides exhaust gases directly to riser without turbulence and back pressure. This increases
the engines performance up to 10%. In the meantime, an additional 40% water cooling area will decrease the entire manifold
body temperature significantly
This
listing is for one (1) exhaust manifold for 1983-2001 Mercruiser
MODEL 200-320, V8 (S.B.), GM 305/350/377 CID (serial number 0M299999
and below.) P/N (1) 51230 (GL51230). **NOT FOR DRY JOINT
EXHAUST**This exhaust manifold comes with FULL manufacturer's
3-year warranty. This manifold can improve the performance of your
stock engine and improve fuel efficiency at the same time.
Plesae call us today!
800-756-1114 **NOT FOR DRY JOINT EXHAUST**