Aftermarket Lower Exhaust Bellows Kit – Fits Mercury V6 V8 4.3L-7.4L (Replaces 32-14358T, 32-14358001)

Aftermarket Lower Exhaust Bellows Kit – Fits Mercury V6 V8 4.3L-7.4L

This lower exhaust bellows kit is engineered for Mercury V6 and V8 engines (1987 and newer) equipped with center rise manifolds and 4-inch oval exhaust systems. It serves as a direct replacement for multiple OEM andpart numbers, including Mercury 32-14358T, 32-14358001, Sierra 18-2746, and others. Constructed from reinforced, marine-grade rubber, it is designed to withstand the harsh marine environment and dampen vibrations. The bellows features a slight bend configuration to ensure proper fit and function.

• Direct Fit: Designed for bolt-on replacement, facilitating straightforward installation.
• Complete Kit: Includes two lower exhaust bellows and four marine-grade stainless steel clamps.
• Compatibility: Fits a wide range of gasoline V6 and V8 MerCruiser engines from 1987-up.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM andbrands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

• 2 x Lower Exhaust Bellows (Replaces OEM 32-14358T)
• 4 x Stainless Steel Hose Clamps (Marine Grade)
• 1 x Installation Instructions
• Note: This kit is sold as a pair, containing two (2) units of the exhaust bellows.

Installation Guide

1. Safety First: Disconnect the battery and ensure the engine is cool. Trim the sterndrive to the full up position for access.
2. Remove Old Bellows: Locate the lower exhaust bellows. Loosen and remove the two hose clamps securing it to the transom assembly and the bell housing.
3. Inspect & Clean: Carefully remove the old bellows. Clean the mounting surfaces on the transom and bell housing, removing any old sealant or debris.
4. Position New Bellows: Align the new bellows, ensuring the larger end connects to the bell housing and the smaller end to the transom exhaust pipe.
5. Secure Clamps: Slide the new stainless steel clamps over each end. Position them in the grooves of the bellows.
6. Tighten Securely: Tighten both clamps firmly. Ensure the bellows is seated correctly and creates a secure seal on both ends.
7. Final Check: Lower the sterndrive. Reconnect the battery and check for exhaust leaks once the engine is started safely on the water.

Troubleshooting & FAQ

How do I confirm this kit fits my engine?
First, check the "Compatible Engine Models" table on this page. This kit fits most Mercury V6 and V8 engines from 1987 and later with center rise manifolds. Second, verify your existing part number against the "Part Number Cross-Reference" table, which includes numbers like Mercury 32-14358T and Sierra 18-2746.

What are the signs of a failing exhaust bellows?
Common signs include visible cracks, splitting, or perishing of the rubber. You may also hear a louder exhaust noise or notice water leaking into the bilge area, which can be a serious issue.

How often should the exhaust bellows be replaced?
It is recommended to inspect exhaust bellows annually for signs of wear, especially for boats used in saltwater. A typical replacement interval is every 3-5 years as part of preventative maintenance, or immediately if any damage is found.

OEM vs. Aftermarket?
This listing is anreplacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is anreplacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.