View our manifold product page to shop for discount sterndrive GLM manifolds. We also carry OEM Marine Manifolds including Chrysler Manifolds, Mercruiser Manifolds, OMC Manifolds, Volvo Penta Manifolds plus more and ready to ship today.

View our marine Manifold Catalog to review exhaust system/manifold drawings and parts for your engine. We offer a variety of boat exhaust manifolds.

Picture of GLM Marine Exhaust Manifold #51640

GLM Products:
Over the past two decades, GLM has committed itself to producing high quality and cost effective aftermarket marine (marine manifold) products. From superior quality materials to the most advanced computerized machinery, GLM has made a commitment to the marine industry and its consumers to deliver the most outstanding, reliable and compatible products to meet the demands of consumers.
All GLM products are brand new from factory and completely compatible and interchangeable with the OEM. In addition, GLM in-house design and engineering actually enables improvement on the original OEM designs. GLM engineering and manufacturing capabilities produce more reliable replacement parts for our customers. Advanced technology, superior materials, and compatibility constantly improve and GLM strives to include these advances in all of its products.

GLM Warranty:
This product of GLM Products, Inc. (“GLM”) is warranted to be free from defects in material and workmanship for a period of two years from the date of purchase for aluminum elbow/manifold and all other GLM parts and accessories, three years from the date of purchase for cast iron elbow/manifold. Products used for commercial, rental, or income producing activity are warranted for a period of ninety (90) days.