3x NGK IZFR5J Spark Plugs Mercury / Mariner Optimax 75HP 90HP 115HP 125HP (3-Cylinder Models)

Genuine NGK Plugs UK Stock SSI MARINE

Product Description

This listing is for 3x NGK IZFR5J spark plugs, suitable for Mercury and Mariner Optimax 75HP, 90HP, 115HP, and 125HP 3-cylinder outboards.

These are genuine NGK marine-grade plugs, trusted for consistent ignition performance, reliability, and durability in high-output 2-stroke outboards like the Optimax range.

Designed for 3-cylinder Optimax models only.

Product Features

• NGK IZFR5J Trusted OEM spark plug

• Suitable for Mercury/Mariner Optimax 75125HP (3-cylinder)

• Delivers strong ignition and smooth performance

• Helps maintain fuel economy and clean combustion

• Pre-gapped and ready to install

Why Buy from SSI MARINE?

• All parts are in UK stock

• Carefully selected based on real workshop experience

• Collection available from our Leigh (Manchester) unit

• Open Monday to Friday, 9 AM to 5 PM

• Friendly, knowledgeable support available if youre unsure about compatibility

Important: Just because a plug looks the same doesnt mean its the correct one for your engine. Please check part numbers and specsor contact us before purchasing.

Shipping & Collection

• Fast UK dispatch

• Collection available from our Leigh workshop

• Tracked delivery with same-day dispatch on orders before 1 PM

Buy with confidence from SSI MARINE the right parts, trusted advice, and fast UK service.