iboats - The #1 Store For Everything Boating
Where to Find Your Prop Pitch

Look on the outer hub of the prop near the blades or inside the hub.

Most props are stamped with a series of numbers.

Pitch is always the last number listed.

Example: 3 x 16 x 24.5R

3 - Number of Blades (occasionally displayed)

16 - Diameter

24.5 - Pitch

R - Direction of Rotation (R = Right/Standard, L = Left/Counter)

Pitch is stamped on the outer prop hub...   ...or
around the inner hub.
Prop Pitch & RPM's

For safety, and efficient performance, it is critical that your engine operates within the RPM range recommended by the manufacturer.


A change in the prop pitch will increase or decrease the engine RPM's and can be used to bring them into the recommended range. A 2" pitch increase (for example, from 21" to 23") will result in approximately a 300-400 RPM decrease and vice versa.


The correct prop allows the engine's RPM to run within the top end of the manufacturers recommendation.

Propeller Help Guide
X - Continue Shopping
- Current Propeller Specials -
Solas Lexor Props Closeout

3-Blade, Stainless Steel Propellers

$150 Off select SS Lexor Props

While Props last

FREE HUB! - Turning Point Props

All Engine Brands - Free Hub with Aluminum Hustler Gen II

$50 Value - Lowest Prices Anywhere!

40 - 150hp w/ 4-1/4" gearcase ONLY $87.99

135 - 300+hp w/ 4-3/4" gearcase ONLY $96.99 or $115.99

While props last

Turning Point Generation 1 Sale

Up to 60% off first generation Turning Point Props

When the manufacturers change prop styles, you save big!

While props last

Volvo Penta QL Props
Blowout Prices & Free Shipping

Over 40% Off & Free Shipping on ALL QL brand props

Designed for all engines: J/E, Mercury, Yamaha, etc.

Save big on quality Aluminum propellers.

$400 Off Volvo X-Series DuoProps

Composite duoprops 10-15% stronger than aluminum

For single engines up to 5.7L, DPX & DPS Drives

Save even more with replaceable blades

While props last

Michigan Wheel Blowout

Over 1500 Michigan Wheel Props - Up to 70% Off

Save on a wide selection of blowout priced propellers

While props last

Avenger Propellers - FREE SHIPPING!

Ultimate performance, stainless steel propeller

Only 300 available - Catch the savings before they're gone

Free UPS ground shipping to lower 48 states

While props last

Michigan Wheel Vortex - Spring Sale

Michigan Wheel High Performance Aluminum Props

Save over 30% on 17", 19", 21" props for all V6 engines

Limited Time Offer

Free Shipping - Stiletto Props

Free UPS Ground shipping on ALL Stiletto Propellers

Save even more with no shipping costs!

Ground shipping to lower 48 states only - No P.O. boxes

Stiletto Fixed Hub Closeout

Stiletto has changed to a 2-piece prop style - same great performance

Get the discontinued fixed hub Stilettos at blowout prices

While props last

Continue Shopping »
Copyright © 1999-2009 iboats, inc.
Mariner 150 HP 1978 & Newer Outboard Propellers
You Are Viewing Available Prop Pitches For:
  • Manufacturer:Mariner
  • Horsepower: 150 HP
  • Years: 1978 & Newer
  • Model: 150 HP Outboard
  • Specs: Thru Hub Exhaust & 15 Tooth Spline, V-6 Gearcase
  • Max RPM: 5000-5600 RPM
Where to Find Your Prop Pitch Prop Pitch & RPM's

It is critical that your engine operates within the manufacturer-recommended RPM range.

- 2” Pitch will add 400 RPM

+ 2” Pitch will subtract 400 RPM

These changes vary and may not reflect actual change in engine RPM & performance for your specific prop & engine.
X - Close
Please Choose A Propeller Pitch:
 
Your Engine
Propeller Pitch
                                                                                                                                                                                                                               
Propeller Help Guide
P is for Propeller Propeller Basics
How To Choose A Prop
Diameter Pitch
Cupping Rake
Ventilation Cavitation

We tell you everything you need to know about props from cupping to ventilation.

Learn About Prop Characteristics Prop Characteristics
3 Blades VS. 4 Splines
Left-Handed Props
Performance Exhaust
Aluminum vs. Stainless Steel

If you want to modify your boat's performance, consider the above before making your selection.

Learn About Engine RPM Determining RPM's
Effect of pitch on RPM
Test for Maximum RPM



For safety and efficient performance, it is critical that your engine operates within the RPM range recommended by the manufacturer.

                                                                                                                                                                                                                               
Click here for more info Click here for more info Price Busting Low Price Guarantee - Click Here for details

 
Plus Look For The Cool Comfort Winterization Sale!

It's not too early to start preparing your boat and dock for winter.

SAVE NOW!
$5 Off Every $50 Order

Use promo code EOSAVE5

Sale Details: Save $5 Off every $50 you spend, including already marked down sale items. Excludes electronics, inflatable boats, trolling motors, and outboard engines. At checkout enter promo code EOSAVE5 to receive the discount. Offers cannot be applied to previous purchases or combined with other offers. Promo codes limited to U.S. and Canadian customers only. Only one code allowed per order. We reserve the right to modify, change, correct typographical errors, or discontinue all or parts of this sale without any prior notice.