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Marine Exhaust Tube – Fits MerCruiser V6 & V8 Marine Engines (Replaces Mercury 32-807458T)
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Marine Exhaust Tube – Fits MerCruiser V6 & V8 Marine Engines
This marine exhaust tube is designed for select MerCruiser V6 and V8 stern drive engines, including Gen+ models (1998 and later) like the 262 CID/4.3L. It serves as a direct-fit replacement, ensuring proper exhaust routing and engine performance.
This part directly replaces Mercury part number 32-807458T, Sierra 18-2770, and Mallory 9-72804.
- Installation Type: Direct replacement
- Compatible Fuel Type: Gasoline
- Primary Material: Metal
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| Mercury | 32-807458T |
| Sierra | 18-2770 |
| Mallory | 9-72804 |
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.
| Brand | Model | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|
| MerCruiser | 4.3L (Gen+) 2 BBL GM 262 V-6 | 4-Stroke | 1998 | 32-807458T | Serial #0L010044-0M614999 |
| MerCruiser | 4.3L EFI (Gen+) TBI GM 262 V-6 | 4-Stroke | - | 32-807458T | Serial #0L012009-0L618999 |
| MerCruiser | 4.3L EFI (Gen+) TBI GM 262 V-6 | 4-Stroke | - | 32-807458T | Serial #0L619000-0M322780 |
| MerCruiser | 4.3LH (Gen+) 4 BBL GM 262 V-6 | 4-Stroke | 1998 | 32-807458T | Serial #0L010044-0M614999 |
| MerCruiser | 4.3LX (Gen+) 2 BBL GM 262 V-6 | 4-Stroke | 1996-1997 | 32-807458T | Serial #0F803000-0K999999 |
| MerCruiser | 4.3LXH (Gen+) 4 BBL GM 262 V-6 | 4-Stroke | 1996-1997 | 32-807458T | Serial #0F803114-0K999999 |
| MerCruiser | 262 MAG (TBI)(Gen+) | 4-Stroke | - | 32-807458T | Serial #0F803800-0K999999 |
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Exhaust Tube |
| Installation | Direct replacement |
| Fuel Type | Gasoline |
| Housing Material | Metal |
| Dimensions | Approximately 5.5 × 5.5 × 5 inches (139.7 × 139.7 × 127 mm) |
| Weight | 0.97–1.04 lbs (0.44–0.47 kg) |
| Warranty | Limited Lifetime (Sierra brand) |
| Country of Origin | Italy (Sierra part) |
Package Contents
- 1 x Exhaust Tube (Replaces OEM Part #32-807458T)
Installation Guide
Follow these general steps to replace the exhaust tube. Always consult your engine’s service manual for detailed instructions and safety precautions.
- Safety First: Ensure the engine is completely cool and disconnect the battery.
- Locate the Exhaust Tube: Identify the old exhaust tube, which is typically located between the exhaust elbow (riser) and the Y-pipe.
- Remove Clamps: Loosen and remove the clamps securing the upper and lower ends of the tube.
- Extract Old Tube: Carefully remove the old exhaust tube. It may require some gentle twisting or prying if it is stuck.
- Clean Surfaces: Clean the mounting surfaces on the elbow and Y-pipe to ensure a good seal.
- Install New Tube: Position the new exhaust tube correctly and slide it into place.
- Secure Clamps: Re-install and tighten the clamps securely to prevent exhaust and water leaks.
- Final Check: Reconnect the battery and run the engine while checking for any signs of leaks around the new tube.
Troubleshooting & FAQ
Q: How do I confirm this exhaust tube fits my MerCruiser engine?
A: The best way to confirm fitment is by matching your original part number to our cross-reference list (Mercury 32-807458T, Sierra 18-2770, Mallory 9-72804). You can also match your engine model and serial number range against our compatibility table.
Q: What are the signs of a failing exhaust tube?
A: Common signs include water leaking into the bilge, an overheating engine, an unusually loud exhaust sound, or visible cracks and corrosion on the tube itself. Failure can lead to serious water damage to the engine.
Q: How often should I inspect or replace the exhaust tube?
A: Inspection should be part of your annual service, especially for boats used in saltwater. Replacement frequency depends on usage and water conditions, but it is a critical component for preventing water ingestion into the engine.
Q: OEM vs. Aftermarket?
A: This listing is an aftermarket replacement 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.
Q: How fast do you ship and how much does it cost?
A: 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.
Q: What is your warranty and return policy?
A: 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 an aftermarket replacement 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.
Мы осуществляем доставку практически по любому адресу в мире, при этом для большинства регионов доступна бесплатная доставка.
Для наших типичных клиентов из США и Канады сроки доставки следующие:
- Amazon FBA : заказы будут доставлены в течение 1–5 рабочих дней после размещения заказа (в определенные особые периоды, такие как крупные акции, Рождество и т. д., время доставки Amazon FBA может быть изменено).
- Доставка со склада в США : заказы будут доставлены в течение 7 дней после размещения заказа.
- Доставка со склада в Китае : заказы будут доставлены примерно через 12 дней после размещения заказа.
Когда вы размещаете заказ, мы оценим даты отправки и доставки для вас на основе доступности ваших товаров и выбранных вами вариантов доставки. В зависимости от выбранного вами поставщика услуг доставки, предполагаемые даты доставки могут отображаться на странице расценок на доставку.
Также обратите внимание, что стоимость доставки многих товаров, которые мы продаем, основана на весе. Вес любого такого товара можно найти на странице с его подробностями. Чтобы отразить политику транспортных компаний, с которыми мы работаем, все веса будут округлены до следующего целого фунта.
Основанная в 2002 году, компания JLM Marine зарекомендовала себя как специализированный производитель высококачественных морских деталей, базирующийся в Китае. Наша приверженность совершенству в производстве заслужила нам доверие ведущих мировых морских брендов.
Как прямой поставщик, мы обходим посредников, что позволяет нам предлагать конкурентоспособные цены без ущерба качеству. Такой подход не только поддерживает экономическую эффективность, но и гарантирует, что наши клиенты получают наилучшую ценность напрямую от источника.
Мы рады расширить свое присутствие через розничные каналы, предлагая наш опыт и приверженность качеству непосредственно владельцам и любителям лодок по всему миру.
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