Mercury 30" Lower Unit | Genuine OEM | Fits 1999 & Up Mercury Optimax & EFI Outboards | New in Box | 1-Year Warranty

Product Overview

Replace your damaged or worn lower unit with this genuine OEM Mercury 30-Inch Lower Unit, designed for select 1999 and newer Mercury Optimax and EFI outboard engines. Built to Mercury's factory specifications, this complete gearcase delivers dependable performance, smooth shifting, and long-lasting durability for both recreational and commercial boating applications. This lower unit is brand new, has never been installed, and comes ready for installation. Each unit is professionally inspected before shipment to ensure it meets OEM quality standards. Whether you're repowering your boat or replacing a failed gearcase, this Mercury lower unit provides factory-original reliability and performance. Backed by a 1-Year Working Warranty, this genuine Mercury lower unit offers confidence on the water and peace of mind with your purchase.

---

Key Features

• Genuine OEM Mercury Lower Unit
• Brand New – Never Installed
• 30-Inch Shaft Length
• Designed for Mercury Optimax & EFI Outboards
• Factory-Built Gearcase
• Smooth Shifting Performance
• Heavy-Duty Construction
• Professionally Inspected
• Ready for Installation
• 1-Year Working Warranty

---

Technical Specifications

Specification	Details
Brand	Mercury
Product Type	Complete Lower Unit
Condition	New in Box
Shaft Length	30 Inches
Engine Compatibility	Mercury Optimax & EFI
Installation	Ready to Install
Warranty	1-Year Working Warranty

---

Compatible Applications

Designed for select Mercury outboards including: Model Years

• 1999 and newer

Engine Type

• Mercury Optimax
• Mercury EFI

Shaft Length

• 30-Inch

Important: Always verify your engine's model number, serial number, shaft length, and OEM part number before purchasing. Mercury lower units are often serial-number specific. If you need assistance confirming compatibility, our team is happy to help before you order.

---

Condition

This Mercury lower unit is brand new and has never been installed. Inspection highlights include:

• Genuine OEM Mercury component
• Factory-new condition
• Professionally inspected before shipment
• Complete lower unit assembly
• Ready for installation

Important: Gear oil is not included. The lower unit is shipped dry and must be filled with the correct gear lubricant before operation.

---

What's Included

Your purchase includes:

• Genuine OEM Mercury 30-Inch Lower Unit Assembly

Only the components shown in the product photos are included.

---

Shipping Information

Every lower unit is securely packaged to protect it during transit. We offer fast shipping throughout the United States, with international shipping available upon request. For an accurate shipping quote, please provide:

• Country
• ZIP or Postal Code
• Commercial or Residential Address
• Whether liftgate service is required

---

Warranty

This Mercury lower unit includes a 1-Year Working Warranty. Warranty coverage applies to failures occurring under normal operating conditions during the warranty period. If a covered defect occurs, EZ Boats Marine will repair, replace, or refund the product in accordance with our warranty policy.

---

Why Buy from EZ Boats Marine?

• Genuine OEM Mercury Marine Parts
• Brand New Factory Components
• Factory Performance and Reliability
• Professionally Inspected Before Shipment
• Secure Packaging
• Fast Nationwide and International Shipping
• 1-Year Working Warranty
• Experienced Marine Customer Support

EZ Boats Marine is committed to supplying premium OEM marine parts backed by dependable service, expert support, and honest product descriptions.

---

Frequently Asked Questions

Is this a genuine Mercury lower unit?

Yes. This is a genuine OEM Mercury lower unit manufactured to Mercury's factory specifications.

Is this lower unit new?

Yes. It is brand new, has never been installed, and is professionally inspected before shipment.

Which Mercury engines does it fit?

It fits select 1999 and newer Mercury Optimax and EFI outboards equipped with a 30-inch shaft. Please verify compatibility using your engine's model number, serial number, and part number before purchasing.

Does the lower unit come with gear oil?

No. The lower unit is shipped without gear oil. Fill it with the correct marine gear lubricant before installation and operation.

Does this lower unit include a warranty?

Yes. It is backed by a 1-Year Working Warranty, providing added confidence with your purchase.