Mercury V6 2:1 Gear Ratio Lower Unit Years 1979-2014

New and remanufactured Mercury outboard lower units (gearcases) for Mercury V6 engines in the 135hp (including 135 DFI/Optimax) and 150hp range from 1979 to 2014 (typically 2.0L/2.4L/2.5L models with 2:1 gear ratio). Rebuilt with all new bearings, seals, gears, and other components—including updated parts—these units often deliver better-than-OEM durability and performance.

Key Features and Specs:

• Gear Ratio: 2:1 (standard for these 135-150hp V6 models, providing strong low-end torque).
• Propeller Shaft: 15 splines (standard across this range for prop compatibility).
• Water Pump: Included (not pre-installed—install during setup, add gear oil, and the unit is ready).
• Drive Shaft: Not included—reuse your existing drive shaft (snaps in on these models; typically 8 splines). Contact us if a replacement is needed.
• Warranty: Comes with a 2-year manufacturer warranty. A 12-month extended warranty is available for an additional $540.
• Core Policy: No core charge required, and no core value/credit if an old unit is returned.

Important Selection Tip: To ensure perfect fitment (shaft length, rotation—standard or counter-rotating—exact model like 135 DFI, and compatibility), please provide the serial number and model number from your motor's transom bracket. This is essential for matching these classic Mercury V6 lower units accurately.

Availability: These units are normally not stocked in-store and ship directly from the manufacturer. Contact us for current pricing, stock, lead times, and any add-ons (extended warranty, drive shaft, etc.).

Available Configurations and Shaft Lengths (Contact us for exact pricing, availability, and upcharges):

If you have questions, need help verifying fitment, or want quotes on related parts (e.g., drive shaft, gear lube kit), email us at jhawknz@gmail.com or call 615-691-1433—we're happy to assist with your purchase!

About Us: Hawkeye Marine, LLC—located in La Vergne, Tennessee—is your trusted source for high-quality marine parts. As a dealer for industry leaders like OBR Parts and Marine (established 1982), we deliver top-tier remanufactured and new outboard components with expert technical support, prompt shipping, and nationwide service for marine dealers and boaters alike.