---
product_id: 43748753
title: "H2O T-20970 3\" Exhaust Manifold Riser Elbow Mercruiser 98504A3 Sierra 18-1970-1 GLM 51110"
brand: "h2o performance parts"
price: "€ 804.31"
currency: EUR
in_stock: true
reviews_count: 3
url: https://www.desertcart.hr/products/43748753-h2o-t-20970-3-exhaust-manifold-riser-elbow-mercruiser-98504a3
store_origin: HR
region: Croatia
---

# Smooth exhaust flow CNC machined precision High-quality build H2O T-20970 3" Exhaust Manifold Riser Elbow Mercruiser 98504A3 Sierra 18-1970-1 GLM 51110

**Brand:** h2o performance parts
**Price:** € 804.31
**Availability:** ✅ In Stock

## Summary

> 🚤 Elevate Your Marine Experience!

## Quick Answers

- **What is this?** H2O T-20970 3" Exhaust Manifold Riser Elbow Mercruiser 98504A3 Sierra 18-1970-1 GLM 51110 by h2o performance parts
- **How much does it cost?** € 804.31 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/43748753-h2o-t-20970-3-exhaust-manifold-riser-elbow-mercruiser-98504a3)

## Best For

- h2o performance parts enthusiasts

## Why This Product

- Trusted h2o performance parts brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Leak Tested:** Guaranteed leak-free operation.
- • **Durable Finish:** Baked enamel coating for long-lasting protection.
- • **Enhanced Performance:** Shot peened for optimal exhaust flow.
- • **Precision Engineering:** CNC machined for perfect gasket fit.
- • **Universal Compatibility:** Replaces multiple Mercruiser models effortlessly.

## Overview

The H2O T-20970 3" Exhaust Manifold Riser Elbow is a high-quality replacement part designed for Mercruiser engines. With its CNC machined surfaces, shot peened finish, and baked enamel coating, this riser elbow ensures optimal performance and durability, making it a must-have for any marine enthusiast.

## Description

H2O T-20970 3" Exhaust Manifold Riser Elbow Mercruiser 98504A3 Sierra 18-1970-1 GLM 51110

## Features

- Replaces Mercruiser 98504A3 Sierra Marine 18-1970-1 GLM 51110 Osco 8503A Barr MC-20-98504
- High quality, uniform wall thickness, clean exhaust passages
- Shot peened for smooth external finish
- All mounting surfaces CNC machined to guarantee exacting gasket mating surface
- Leak tested and coated with a baked enamel from the factory

## Images

![H2O T-20970 3" Exhaust Manifold Riser Elbow Mercruiser 98504A3 Sierra 18-1970-1 GLM 51110 - Image 1](https://m.media-amazon.com/images/I/81lX08MRRgL.jpg)
![H2O T-20970 3" Exhaust Manifold Riser Elbow Mercruiser 98504A3 Sierra 18-1970-1 GLM 51110 - Image 2](https://m.media-amazon.com/images/I/81aqNqXyR4L.jpg)
![H2O T-20970 3" Exhaust Manifold Riser Elbow Mercruiser 98504A3 Sierra 18-1970-1 GLM 51110 - Image 3](https://m.media-amazon.com/images/I/71j9hH9yTlL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Five Stars
  

*by J***H on Reviewed in the United States on November 1, 2016*

Nice quality and good fit

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    The Bolts Heads should be on top not at the Base.
  

*by S***E on Reviewed in the United States on March 12, 2018*

The bolts holes are drilled in such a way, the bolt heads are not accessible.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Good product
  

*by J***R on Reviewed in the United States on March 11, 2022*

Good product

---

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**Shop now:** [https://www.desertcart.hr/products/43748753-h2o-t-20970-3-exhaust-manifold-riser-elbow-mercruiser-98504a3](https://www.desertcart.hr/products/43748753-h2o-t-20970-3-exhaust-manifold-riser-elbow-mercruiser-98504a3)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-10-17*