Riser Gasket for Mercruiser 3.7L, 3.7LX, 165, 170, 180, 190, 27-18272

New aftermarket replacement gaskets & seals for the compatible Mercruiser applications listed below. Use the reference numbers 27-18272 to confirm fitment before ordering.

Key Features

• Gaskets & Seals for the listed marine application
• Supplied as 1 item
• Cross-reference information included for fitment checking
• New replacement part supplied by 4Boats

Technical Specs

Compatibility / Fitment Guide

Mercruiser 4 Cylinder Engines Models 3.7L, 3.7LX, 165, 170, 180, 190 Mercury Made 224 CID Engines, Not for GM Based Units. *For Engines with Aluminium Exhaust Maniolds*

Fitment check required: match the original part number, engine model and the physical dimensions or connections before ordering. Model names alone are not always sufficient.

Part Number Cross Reference

Frequently Asked Questions

How do I confirm compatibility?
Compare the original part number and the physical part with the information and images in this listing.

Is this supplied as a genuine Mercruiser part?
No, unless the product title explicitly states otherwise. This listing is for a replacement part.

Should installation be carried out professionally?
Use the engine manufacturer’s workshop procedure. If you are unsure, ask a qualified marine engineer.