---
product_id: 33553400
title: "MERCRUISER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58244"
brand: "glm"
price: "₨53495"
currency: SCR
in_stock: true
reviews_count: 1
url: https://www.desertcart.sc/products/33553400-mercruiser-complete-exhaust-manifold-set-gm-b-b-cast-iron
store_origin: SC
region: Seychelles
---

# 149 lbs Weight OEM Compatibility Cast Iron Durability MERCRUISER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58244

**Brand:** glm
**Price:** ₨53495
**Availability:** ✅ In Stock

## Summary

> 🚤 Elevate Your Marine Experience with Unrivaled Power!

## Quick Answers

- **What is this?** MERCRUISER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58244 by glm
- **How much does it cost?** ₨53495 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/33553400-mercruiser-complete-exhaust-manifold-set-gm-b-b-cast-iron)

## Best For

- glm enthusiasts

## Why This Product

- Trusted glm brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Fit:** Designed to meet OEM specifications for seamless installation.
- • **Heavyweight Champion:** Weighing in at 149 lbs, this manifold set is built to withstand the toughest conditions.
- • **Reliable Performance:** Ensures optimal exhaust flow for enhanced engine efficiency.
- • **Unmatched Durability:** Engineered from robust cast iron for long-lasting performance.
- • **No Discontinuation Worries:** This product is actively manufactured, ensuring availability when you need it.

## Overview

The MERCRUISER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) by GLM is a high-quality, durable exhaust solution designed for marine engines. Weighing 149 pounds, this manifold set is built to last and meets OEM specifications, ensuring a perfect fit and reliable performance for your boating needs.

## Description

For Post-1986 Mercruiser GM V8 Big Block -4 inch elbow -3 inch spacer In the V8 GM Big Block, GLM's fully tuned design guides exhaust gases directly to the riser without turbulance and back pressure. This increases the engine's performance. These GLM manifolds also feature an additional 30% 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. *All manifolds and risers are powdercoated black for maximum corrosion protection* **Cast Iron manifolds and risers come with a 3 year warranty**

## Features

- GLM Part Number: 58244

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | GLM |
| Brand | GLM |
| Item Weight | 149 pounds |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 58244 |
| OEM Part Number | GLM Part Number: 58244 |

## Images

![MERCRUISER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58244 - Image 1](https://m.media-amazon.com/images/I/618fpZvd4SL.jpg)
![MERCRUISER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58244 - Image 2](https://m.media-amazon.com/images/I/51Z2bu-1OGL.jpg)
![MERCRUISER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58244 - Image 3](https://m.media-amazon.com/images/I/51Z2bu-1OGL.jpg)
![MERCRUISER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58244 - Image 4](https://m.media-amazon.com/images/I/61T8gTezPgL.jpg)
![MERCRUISER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58244 - Image 5](https://m.media-amazon.com/images/I/61JTEgTum+L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    mercruiser 7.4L excellent fit
  

*by A***R on Reviewed in the United States on October 15, 2015*

Fit great and delivery was early. Only thing that would make it a better complete kit is if they added the bolts for the block. Not a big deal but it would save a trip to NAPA.

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**Shop now:** [https://www.desertcart.sc/products/33553400-mercruiser-complete-exhaust-manifold-set-gm-b-b-cast-iron](https://www.desertcart.sc/products/33553400-mercruiser-complete-exhaust-manifold-set-gm-b-b-cast-iron)

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-04-23*