basic power industries
177 Fulford Dr.
Harkers Island, NC 28531
1-800-562-2742 (for part information)
(252) 504-3355 (for techincal help)
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Part #:BPI18-1957-1 has been replaced by GLM51240

Manifold Exhaust Marine for Mercruiser GM 454 7.4L 502 8.2L V8 89011

Part #: GLM51240


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Exhaust Manifold for Mercruiser Big Block 7.4L 454 applications. This center riser Exhaust Manifold was used on GM Big Block Engines From 1983 & up. It uses Riser Osco # 8503A for the 3.0", and Osco # 4354 for the 4.0". Also, the mounting kit is Osco # 9011-MK.

Replaces: Mercury Quicksilver #s: 807078A6, 89011A8; Barr # MC-1-89011; GLM # 51240; Sierra # 18-1957-1; Mallory # 9-40506 GLM Big Block Exhaust

GLM Big Block Manifold Construction

GLM Marine, has catapulted to the forefront in manifold technology by incorporating improvements in design, manufacturing, quality assurance, fault testing, and distribution.

GLM owns their own factories which gives them the ability for complete quality control to assure the integrity of the product before it is shipped. Factory ownership is rare in the Marine Manifold industry. This is one of the reasons GLM can offer a 3-year  limited warranty on all their cast iron exhaust products.

Basic Power Industries, has been a proud distributor for GLM ever since their inception in the 80's, during which time we have witnessed an ongoing maturity and a goal of becoming the best and most comprehensive aftermarket supplier serving the USA and global markets.

When you order GLM parts through Basic Power Industries you can be rest-assured that we have the ears of the company to address any questions you may have.  For inquiries, just pick up the phone and call our toll free 800-562-2742 number and speak to a techie or sales representative (no answering machines here).

Ships Today (Monday-Friday) High Quality Parts is © 1999- Basic Power Industries, Inc., all rights reserved • All Item specifications and availability are subject to change without notice
Basic Power Industries, Inc.• 177 Fulford Dr, Harkers Island, NC 28531-9520, US • +1-252-504-3355