---
product_id: 42674141
title: "MERCRUISER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58242"
brand: "glm marine"
price: "79652025₫"
currency: VND
in_stock: true
url: https://www.desertcart.vn/products/42674141-mercruiser-complete-exhaust-manifold-set-gm-b-b-cast-iron
store_origin: VN
region: Vietnam
---

# MERCRUISER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58242

**Brand:** glm marine
**Price:** 79652025₫
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** MERCRUISER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58242 by glm marine
- **How much does it cost?** 79652025₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/42674141-mercruiser-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

## Description

This listing is for two (2) exhaust manifolds and two (2) 4" risers (elbows) compatible replacements for 1986 & Up Mercruiser MODEL 330-370, V8 (B.B.), GM 454 502 CID (1986 up to 0M SN#’s) with raw/fresh water cooling systems without spacers. P/N (2) 51240 (GL51240)+(2) 51140 (GL51140); equivalent to the contents in GLM part number 58242 (GL58242.) **NOT FOR DRY JOINT EXHAUST** THE 4" RISERS FIT 1987-Early 2000. This manifold kit contains (2) exhaust manifolds, (2) 4" risers (elbows). This manifold set can improve the performance of your stock engine and improve fuel efficiency at the same time. Kit contents are listed below: (2) 51140 - Exhaust Elbows - OEM #807988A2 (2) 51240 - Exhaust Manifolds - OEM #807078A6 (2) 30240 - Elbow Gaskets - OEM #27-863724 (2) 33760 - Manifold Gaskets - OEM #27-46820 (8) 22381 - Screws - OEM #10-43749 (2) 13990 - Hose Fittings w/drain plug kit. Note:Ordering this item will require a signature confirmation upon delivery. Please ship to an address where a signature can be obtained from UPS.

## Features

- NOT FOR DRY JOINT SYSTEMS     Manifolds Without Spacers and 4' Exhaust elbow     Replacements for 1986 & Up Mercruiser GM 454 7.4L 502 8.2L V8    ›See more product details

## Images

![MERCRUISER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58242 - Image 1](https://m.media-amazon.com/images/I/61CKGFLNshL.jpg)
![MERCRUISER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58242 - Image 2](https://m.media-amazon.com/images/I/61Yxm8OvKYL.jpg)
![MERCRUISER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58242 - Image 3](https://m.media-amazon.com/images/I/51iZtXHMcCL.jpg)
![MERCRUISER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58242 - Image 4](https://m.media-amazon.com/images/I/51Z2bu-1OGL.jpg)
![MERCRUISER COMPLETE EXHAUST MANIFOLD SET GM B-B (CAST IRON) | GLM Part Number: 58242 - Image 5](https://m.media-amazon.com/images/I/61mrAssBAML.jpg)

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**Shop now:** [https://www.desertcart.vn/products/42674141-mercruiser-complete-exhaust-manifold-set-gm-b-b-cast-iron](https://www.desertcart.vn/products/42674141-mercruiser-complete-exhaust-manifold-set-gm-b-b-cast-iron)

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-23*