Complete powerhead, block gasket kit for Mercury Mariner outboard 40 50 HP 3 CYLINDER 3 CARBURETTORS 2 STROKE.

For Mercury Mariner models made by Tohatsu in Japan

Serial numbers starting with ONO & up models only

Replaces Mercury Part Number:

• 27-812937A98, 27-8M0081614, 27-812937A02

(OEM number for reference only — this is a compatible aftermarket replacement)

Kit Includes:

• Powerhead gasket and Seals

• Quality marine-grade materials

• Suitable for saltwater and freshwater engines

Please Note:

Marine-grade aftermarket part

Exact fit and function — designed to match OEM dimensions

Ideal for rebuilds, top-end service, or powerhead overhaul

Why Buy from SSI Marine?

• UK-based stock for fast shipping

• Same-day dispatch on orders before 1 PM

• Expert support if you need help confirming fitment

• VAT invoice available on request

• Trusted marine supplier — shop with confidence

⚠️ If you’re unsure whether this part fits your engine, message us before purchasing. We're happy to help confirm compatibility.

40 50 HP Powerhead Block gasket kit for Mercury Mariner outboard 2 str 3 cyl 40hp 50hp read ad