GENUINE MERCURY MARINE OEM PROPELLER SHAFT — NEW OLD STOCK

MERCURY / MERCRUISER PART NUMBER: 44-660603

15-SPLINE PROP SHAFT END / 21-SPLINE GEAR END

This listing is for ONE genuine Mercury Marine / MerCruiser OEM propeller shaft, part number 44-660603.

This is NEW OLD STOCK (NOS) and has never been installed. The shaft comes in the original white reinforced factory-style cardboard packaging.

We have multiple identical shafts available. Each shaft is individually packaged and is sold individually.

PART DETAILS:

• Manufacturer: Mercury Marine / MerCruiser

• OEM Part Number: 44-660603

• Description: Propeller Shaft / Prop Shaft

• Condition: New Old Stock (NOS)

• Genuine OEM Mercury Marine part

• 15 splines on the propeller/small end

• 21 splines on the larger/gear end

• Original reinforced cardboard packaging

• Unused and never installed

IMPORTANT IDENTIFICATION INFORMATION:

The shaft and/or original packaging may show additional historical Mercury part-number markings from older production and inventory systems.

Numbers associated with this propeller shaft family include:

44-660603

44-66060

44-660602

44-66060-3

44-824110

44-860308

44-55857

The current Mercury OEM replacement/reference number is:

8M0140440

Please note that older Mercury part numbers can appear differently depending on production date, catalog, packaging and application. Always verify the part number, shaft configuration and your drive serial number before purchasing.

APPLICATION INFORMATION:

The 44-660603 propeller shaft is associated with Mercury MerCruiser sterndrive lower units, including various Pre-Alpha, MR and Alpha One applications.

Applications and references include various MerCruiser:

• #1 Drive

• Pre-Alpha

• MR

• Alpha One / Alpha I

• R.H. rotation lower units

Depending on the exact drive, year and serial number, Mercury used different propeller shaft versions. The correct shaft should always be verified by part number and drive serial number before installation.

This shaft family has been used across a variety of MerCruiser applications, including certain:

• 120 HP

• 140 HP

• 165 HP

• 170 HP

• 3.0L

• 4.3L

• 5.0L

• 5.7L

• Other compatible MerCruiser sterndrive applications

APPLICATIONS VARY BY SERIAL NUMBER.

Please do NOT purchase based solely on horsepower, engine size or year. Compare your existing shaft and verify your MerCruiser drive serial number and required part number before purchasing.

SPLINE COUNT:

This shaft has:

• 15 splines on the smaller/propeller end

• 21 splines on the larger/gear end

The spline count is an important identifying feature. Please compare the spline configuration with your existing shaft before ordering.

OEM REPLACEMENT INFORMATION:

Mercury's current replacement/reference number for this older propeller shaft is:

8M0140440

Older numbers commonly associated with this shaft include:

44-660603

44-66060

44-660602

44-66060-3

44-824110

44-860308

44-55857

These numbers are provided to help buyers locate the correct replacement or cross-reference an older Mercury part number.

CONDITION:

NEW OLD STOCK (NOS).

This propeller shaft has never been installed or used. It has been stored in its original reinforced cardboard packaging as part of older Mercury marine parts inventory.

Because this is older NOS inventory, the packaging may show normal signs of age, shelf wear, discoloration, markings or storage wear. Please see the photographs for the condition of the actual packaging.

The shaft itself is unused.

WHAT YOU WILL RECEIVE:

• ONE Mercury / MerCruiser OEM 44-660603 propeller shaft

• Original reinforced cardboard packaging

The photographs show the actual type of item being sold. Please review all photographs carefully.

WHY BUY USED WHEN GENUINE OEM NOS IS AVAILABLE?

If you are rebuilding an older MerCruiser lower unit, finding an unused original Mercury propeller shaft can be considerably more desirable than installing an unknown used shaft.

This is an excellent opportunity for:

• MerCruiser lower-unit rebuilds

• Alpha One restoration

• Pre-Alpha / MR drive restoration

• Professional marine repair shops

• OEM restorations

• Vintage boat restoration

• Marine mechanics

• Hard-to-find Mercury parts inventory

PLEASE VERIFY BEFORE PURCHASE:

Marine drivetrain components are highly dependent on model and serial number.

Before ordering, please verify:

• Your existing Mercury/MerCruiser part number
• Drive model
• Drive serial number
• Propeller shaft spline configuration
• Physical dimensions/configuration