Name: Propeller for Mercury / Mariner / Tohatsu Outboard Engines – 7.8 x 7, 12 Spline (4-6HP)
Brand: B&O
SKU: 7.8 X 7
Price: 46.99 GBP
Availability: OutOfStock

Propeller for Mercury / Mariner / Tohatsu Outboard Engines – 7.8 x 7, 12 Spline (4-6HP)

Dispatched in 2-3 days

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Our stock levels are dynamic and can change frequently. If a product appears to be in stock, it may have already sold out. Please contact us if you have any questions about availability. Thank you for your understanding.

£46.99

Tax included.

Outboard Propeller 7.8 x 7 (12 Spline)

Premium Replacement for Mercury, Mariner & Tohatsu 4-6HP

Upgrade or replace your outboard's performance with this precision-engineered 3-blade aluminum propeller. Specifically designed for small horsepower Mercury and Tohatsu engines, this propeller offers excellent balance and durability. Constructed from high-grade aluminum alloy, it features a thru-hub exhaust and a pressed-in rubber bushing for smooth operation and engine protection.

RELIABILITY: Built to meet or exceed OEM specifications, ensuring a direct fit and reliable performance in both salt and freshwater environments.

Key Features

✔ 12-Tooth Spline: Precise fitment for standard shafts.
✔ Thru-Hub Exhaust: Improved discharge and efficiency.
✔ High-Gloss Finish: Corrosion-resistant black coating.
✔ Direct OEM Swap: No modifications required for install.

Technical Specs

Diameter:	7.8" (7 4/5")
Pitch:	7"
Blades:	3
Spline Count:	12
Rotation:	Right Hand (RH)
Material:	Aluminum Alloy

Compatibility / Fitment Guide

Make	Model/Application	Year Range
Mercury / Mariner	4hp, 5hp, 6hp (4-Stroke)	1999 & Newer
Mercury / Mariner	4hp & 5hp (2-Stroke)	1987 & Newer
Tohatsu / Nissan	M4, M5 (2-Stroke)	All Years
Tohatsu / Nissan	MFS4, MFS5, MFS6 (4-Stroke)	All Years
Parsun / Hangkai	4hp, 5hp, 5.8hp, 6hp	12-Spline Shaft Models

OEM Cross Reference

Mercury / Mariner OEM	48-812949A02, 48-812949T02, 812949A02
Tohatsu / Nissan OEM	369-64490-0, 369644900M, 3R1B64514-0

Questions & Answers

Is this a genuine original part?

This is a premium quality aftermarket replacement part, manufactured to meet or exceed original equipment (OE) standards for fitment and performance.

How do I know if it is compatible?

We recommend checking the SKU/MPN and Cross Reference list provided above. If your original part number matches any of these, or if your engine is a 12-spline 4-6hp Mercury/Tohatsu, it is a guaranteed fit.

What happens if I have a 10-spline or 14-spline engine?

This propeller specifically fits the 12-tooth spline gearcase common on 4-6HP models. If your shaft has a different tooth count, this prop will not slide onto the shaft. Please verify your spline count before ordering.

Note: Please verify your original part number against the references above before purchasing at 4boats.co.uk.

For the products under £150 the shipping is £6.99.

Free delivery for most items over £150.

Why choose us

QUALITY MARINE PARTS

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Every order is checked by the 4Boats team. Contact us before ordering if you need help with part numbers, compatibility or availability.

Propeller for Mercury / Mariner / Tohatsu Outboard Engines – 7.8 x 7, 12 Spline (4-6HP)