---
product_id: 47738546
title: "MERCRUISWER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58243"
brand: "glm marine"
price: "฿157169"
currency: THB
in_stock: true
url: https://www.desertcart.co.th/products/47738546-mercruiswer-complete-exhaust-manifold-set-gm-b-b-cast-iron
store_origin: TH
region: Thailand
---

# Includes spacers 3" exhaust riser Fits GM 454/502 V8 MERCRUISWER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58243

**Brand:** glm marine
**Price:** ฿157169
**Availability:** ✅ In Stock

## Summary

> 🚤 Upgrade Your Ride with Confidence!

## Quick Answers

- **What is this?** MERCRUISWER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58243 by glm marine
- **How much does it cost?** ฿157169 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/47738546-mercruiswer-complete-exhaust-manifold-set-gm-b-b-cast-iron)

## 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

- • **Durable Cast Iron:** Built to withstand the toughest marine conditions, ensuring longevity and reliability.
- • **Easy Installation:** Designed for a seamless fit, making upgrades a breeze for any DIY enthusiast.
- • **Enhanced Exhaust Flow:** Maximize your boat's performance with optimized exhaust routing.
- • **Perfect Compatibility:** Tailored specifically for Mercruiser GM 454 and 502 V8 engines from 1981-86.
- • **Unmatched Performance:** Elevate your engine's efficiency with our precision-engineered manifold set.

## Overview

The MERCRUISER COMPLETE EXHAUST MANIFOLD SET is a high-quality cast iron replacement kit designed for Mercruiser GM 454 and 502 V8 engines from 1981-86. This manifold set includes a 3" exhaust riser and spacers, ensuring optimal performance and durability in marine applications.

## Description

This listing is a GLM Marine compatible replacement for a pre-1986 MERCRUISER GM COMPLETE EXHAUST MANIFOLD SET for GM BBC with 3" Riser (CAST IRON) and 3" spacers. Models 330-370. Kit includes (2) Exhaust Manifolds (2) Exhaust Elbows, (2) 3" Spacers, Gaskets, Bolts & Drain Plugs. Note: Delivery of this item will require a signature confirmation as proof of delivery.

## Features

- Not For Dry Joint Applications.See images.
- Manifold kit with 3" exhaust riser and 3" spacers 1981-86
- Replacements for Mercruiser GM 454 7.4L 502 8.2L V8

## Images

![MERCRUISWER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58243 - Image 1](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/61zyKQuZNnL.jpg)
![MERCRUISWER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58243 - Image 2](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/51VNKnOJaaL.jpg)
![MERCRUISWER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58243 - Image 3](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/61ty7E88HDL.jpg)
![MERCRUISWER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58243 - Image 4](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/718UEu5gH6L.jpg)
![MERCRUISWER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58243 - Image 5](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/61JTEgTum+L.jpg)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-04-27*