YOUNG MARINE OEM Grade Aluminum Outboard Propeller 10 7/8in - Reliable

In this review the YOUNG MARINE OEM Grade Aluminum Outboard Propeller is evaluated for owners of Mercury 30-70HP outboards who need an affordable, ready-fit replacement. The single biggest reason to buy is its OEM-matching diameter and pitch combined with upgraded aluminum blades, which deliver dependable thrust and easy installation without the premium cost of an original part. Practical, no-nonsense performance and a build that customers report mates well to common Mercury four-stroke engines make this a useful option for routine prop swaps.

Key Features

• Exact fit dimensions: Diameter 10 7/8in and pitch 11in match OEM sizing so users can replace the prop without altering gearing or performance expectations.
• 13 spline tooth: The 13 spline tooth configuration ensures compatibility with a broad range of Mercury 30-70HP lower units and secures the prop on the splined shaft.
• High quality aluminum: The improved aluminum blade material balances corrosion resistance and durability for routine freshwater and light saltwater use.
• Aftermarket value: This propeller offers OEM-identical diameter and pitch at a lower cost, delivering value for budget-conscious boat owners.
• Easy installation: Buyers report straightforward fit and good locking tab engagement, so swapping the prop can be completed without specialized tools.
• Reference compatibility: Built to match reference No48-85632A45, helping owners confirm fit against original part numbers.

Who It's For

This propeller is aimed at owners of Mercury outboard engines from 30HP up to 70HP who need a reliable replacement that matches OEM diameter and pitch. It is a good choice for weekend anglers, small commercial users, and boaters who want a straightforward prop swap that restores or improves speed and RPM without changing engine gearing.

Those who should look elsewhere include owners needing a specialized stainless steel performance prop or custom pitch tuning for racing and heavy towing. If corrosion resistance for extreme saltwater use is a top priority, consider a marine-specific stainless option rather than this aluminum aftermarket unit.

Pros & Cons

Pros

• Fits Mercury 30-70HP engines and matches OEM diameter and pitch for predictable performance.
• Customers report good build quality and measurable speed improvement in some setups.
• Aluminum construction provides a balance of cost, weight, and durability for typical use.
• Easy to install with secure locking tab engagement noted by users.

Cons

• As an aftermarket prop, long-term corrosion resistance may be less than premium stainless alternatives.
• Not intended for specialized racing or extreme towing where a different pitch or material would be preferred.

Specifications

Product type	Aftermarket outboard propeller
Diameter	10 7/8in
Pitch	11in
Spline	13 spline tooth
Reference No	48-85632A45
Material	High quality aluminum
Compatible engines	Mercury outboards 30-70HP

Our Verdict

The YOUNG MARINE OEM Grade Aluminum Outboard Propeller is a practical, value-driven replacement for Mercury 30-70HP owners who want OEM-matched diameter and pitch without the original part price. It delivers solid build quality, easy installation, and reliable performance for general boating needs, making it a sensible buy for routine prop replacement.

Frequently Asked Questions

Will this prop fit my Mercury 50HP four-stroke?
Yes, the prop is specified for Mercury 30-70HP engines and the 13 spline tooth and 10 7/8in diameter with 11in pitch are compatible with common 50HP lower units.

Is this an OEM part?
No, it is an aftermarket propeller built to OEM-matching diameter and pitch, with a reference number to help confirm compatibility.

Can I use this prop in saltwater?
Yes for routine saltwater use, but for long-term heavy saltwater exposure a stainless prop may offer better long-term corrosion resistance.