---
product_id: 21839112
title: "Mercruiser 330 340 MIE Chevy Marine 454 7.4 7.4L GLM Exhaust Manifolds+4\" Risers"
brand: "glm marine"
price: "€ 3351.62"
currency: EUR
in_stock: true
url: https://www.desertcart.sk/products/21839112-mercruiser-330-340-mie-chevy-marine-454-7-4-7
store_origin: SK
region: Slovakia
---

# Marine-grade durability Heavy-duty 135 lbs 20x14x20 inches Mercruiser 330 340 MIE Chevy Marine 454 7.4 7.4L GLM Exhaust Manifolds+4" Risers

**Brand:** glm marine
**Price:** € 3351.62
**Availability:** ✅ In Stock

## Summary

> 🚤 Elevate Your Marine Experience!

## Quick Answers

- **What is this?** Mercruiser 330 340 MIE Chevy Marine 454 7.4 7.4L GLM Exhaust Manifolds+4" Risers by glm marine
- **How much does it cost?** € 3351.62 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/21839112-mercruiser-330-340-mie-chevy-marine-454-7-4-7)

## Best For

- glm marine enthusiasts

## Why This Product

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

## Key Features

- • **Precision Fit:** Designed specifically for GM 454/502 CID engines, guaranteeing a seamless installation.
- • **OEM Compatibility:** Compatible with multiple OEM part numbers for hassle-free replacements.
- • **Enhanced Efficiency:** Includes two 4" risers for improved engine performance and reduced back pressure.
- • **Robust Construction:** Crafted from high-quality materials to withstand the harsh marine environment.
- • **Unmatched Performance:** Engineered for Mercruiser 330-370 V8 models, ensuring optimal exhaust flow.

## Overview

The Mercruiser 330 340 MIE Chevy Marine 454 7.4 7.4L GLM Exhaust Manifolds with 4" Risers are engineered for high-performance marine applications. Weighing 135 pounds and designed for specific Mercruiser models, these manifolds ensure optimal exhaust flow and durability in demanding conditions. With precise fitment for GM 454/502 CID engines, they are the perfect upgrade for any serious boater.

## Description

Mercruiser 330 340 MIE Chevy Marine 454 7.4 7.4L GLM Exhaust Manifolds+4" Risers

## Features

- NOT FOR DRY JOINT MANIFOLDS SEE IMAGES
- Mercruiser MODEL 330-370, V8 (B.B.), GM 454/502 CID (1981 up to 0M SN#’s)
- (2) exhaust manifolds and two (2) 4" 7° risers

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | GLM |
| Brand | GLM MARINE |
| Item Weight | 135 pounds |
| Product Dimensions | 20 x 14 x 20 inches |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | GL-58242 |
| OEM Part Number | #27-46820, #10-43749,, #807078A6, #807988A2, #27-863724,, 807078T08, 807988a2 |

## Images

![Mercruiser 330 340 MIE Chevy Marine 454 7.4 7.4L GLM Exhaust Manifolds+4" Risers - Image 1](https://m.media-amazon.com/images/I/61rDM4PLnDL.jpg)
![Mercruiser 330 340 MIE Chevy Marine 454 7.4 7.4L GLM Exhaust Manifolds+4" Risers - Image 2](https://m.media-amazon.com/images/I/71EfBVXx28L.jpg)
![Mercruiser 330 340 MIE Chevy Marine 454 7.4 7.4L GLM Exhaust Manifolds+4" Risers - Image 3](https://m.media-amazon.com/images/I/61+XF+g51jL.jpg)
![Mercruiser 330 340 MIE Chevy Marine 454 7.4 7.4L GLM Exhaust Manifolds+4" Risers - Image 4](https://m.media-amazon.com/images/I/51Z2bu-1OGL.jpg)
![Mercruiser 330 340 MIE Chevy Marine 454 7.4 7.4L GLM Exhaust Manifolds+4" Risers - Image 5](https://m.media-amazon.com/images/I/51uDd5dHspL.jpg)

## Frequently Bought Together

- Mercruiser 330 340 MIE Chevy Marine 454 7.4 7.4L GLM Exhaust Manifolds+4" Risers
- Set of 8 Spark Plugs For Mercruiser 305 350 454 5.0L 5.7L 7.4L Boat
- NEW WATER PUMP FOR MERCRUISER, OMC, VOLVO PENTA 7.4, 8.2, 454, 502

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**Shop now:** [https://www.desertcart.sk/products/21839112-mercruiser-330-340-mie-chevy-marine-454-7-4-7](https://www.desertcart.sk/products/21839112-mercruiser-330-340-mie-chevy-marine-454-7-4-7)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-12*