Young Marine Aluminum Outboard Propeller 13 Spline Tooth - Reliable

In this review of the Young Marine OEM grade propeller, the bottom line is simple: this after-market aluminum prop delivers a reliable, cost-effective replacement for Mercury 30-70HP outboards when you need OEM-equivalent diameter and pitch. The reviewer found it especially useful for owners who want a straightforward swap with a 13 spline shaft, and the main reason to buy is the combination of improved blade shaping and build quality that preserves engine performance while often reducing cost compared with dealer parts. Contact the seller if you are unsure about spline or size before ordering.

Key Features

• 13 Spline Tooth: Ensures compatibility with Mercury lower units that use a 13-spline driveshaft, making fitment straightforward for the right engines.
• High Quality Aluminum: The aluminum construction balances strength and weight, providing durable performance without excessive heft.
• Improved Blade: Redesigned blade geometry aims to maintain or improve speed and acceleration while matching OEM diameter and pitch.
• OEM-Equivalent Dimensions: Diameter and pitch are identical to original parts, so users can expect similar handling and rpm ranges after installation.
• After-market Value: Offers an economical alternative to dealer propellers while retaining promised performance and quality.

Who It's For

This propeller is for boat owners with Mercury outboard engines in the 30-70HP range who need a like-for-like replacement and who have a 13 spline lower unit. It suits weekend anglers or recreational boaters who want a dependable propeller that installs easily and restores or slightly improves top speed and responsiveness.

It is not for users with a different spline count or for those who require a custom pitch or specialized racing blade; if you cannot confirm your engine spline or exact pitch, contact the seller before purchasing to avoid a mismatched fit.

Pros & Cons

Pros

• Fit: Many customers report the prop fits well and installs easily on compatible Mercury engines.
• Performance: Users noted solid performance with some reporting measurable speed or rpm gains after the first run.
• Build quality: The high quality aluminum and improved blade received positive comments for durability and shaping.
• Value for money: Provides OEM-equivalent diameter and pitch at a lower cost than dealer parts.

Cons

• Fit risk if spline or pitch is unknown: Buyers must verify the 13 spline specification to avoid ordering the wrong prop.
• After-market variation: As an after-market product, finishes or minor fit tolerances can differ from original factory parts.

Specifications

Brand	Young Marine
Reference No	48-73132A45
Spline	13 Spline Tooth
Material	High Quality Aluminum
Compatible Engines	Mercury Outboard 30-70HP
Type	After-market propeller, OEM-equivalent diameter and pitch

Our Verdict

The Young Marine 13-spline aluminum propeller is a sensible choice for Mercury 30-70HP owners who need a reliable OEM-dimension replacement at a better price. It combines durable construction, improved blade design, and solid real-world performance, making it good value for most recreational boaters who confirm spline compatibility beforehand.

Frequently Asked Questions

Does this prop fit my Mercury 50HP?
It fits Mercury engines that use a 13 spline lower unit in the 30-70HP range; verify your engine spline count to be sure.

Is the diameter and pitch the same as OEM?
Yes, the product description states the diameter and pitch are identical to the original OEM equivalents.

Is this a factory part from the engine maker?
No, this is an after-market propeller made by Young Marine but it is designed to match OEM dimensions and performance.