PRODUCT DETAILS
Cylinder Head Gasket for Yamaha & Mariner Outboard 30HP 2-Cylinder (Single Carb Models) | Aftermarket Replacement
This high-quality aftermarket cylinder head gasket is a direct replacement for Yamaha and Mariner 30HP 2-cylinder single carb outboards. Designed for engine repairs, it ensures a tight seal, preventing leaks and maintaining proper compression for optimal performance.
Compatible Yamaha Outboard Models:
✔ 30HP Models: 30A, W30
✔ Serial Numbers: 689-
✔ For 2-Cylinder Single Carb Engines
Compatible Mariner Outboard Models:
✔ 30HP Models: 30A, W30
✔ Serial Numbers: 689-
✔ For 2-Cylinder Single Carb Japanese-Made Models
Replaces Yamaha OEM Part Numbers:
🔹 689-11181-01-00
🔹 689-11181-02-00
🔹 689-11181-A1-00
🔹 689-11181-A2-00
Replaces Mariner OEM Part Numbers:
🔹 27-19138M
🔹 27-84733M
Key Features & Benefits:
✅ Essential for Engine Repair – Direct replacement for worn or damaged gaskets
✅ High-Quality Aftermarket Alternative – Cost-effective and reliable solution
✅ Marine-Grade Durability – Built to withstand saltwater and harsh marine environments
✅ Ensures Proper Sealing & Compression – Prevents leaks and optimizes engine performance
✅ Easy Installation – Direct OEM replacement with a precise fit
Why Buy From SSI Marine?
✔ Premium Marine Parts at Competitive Prices
✔ Fast & Secure UK Shipping – All Parts In Stock & Ready to Ship
✔ Expert Support – Contact Us for Compatibility Assistance
✔ Trusted UK Seller – Collection Available from Leigh, Manchester (Mon–Fri, 9 AM–5 PM)
⚠️ Before purchasing, please double-check compatibility. If unsure, contact us for assistance.
Order Now to Complete Your Outboard Engine Repair & Get Back on the Water! 🚤🔧
SHIPPING & DELIVERY
Delivery & Returns Policy
Delivery
Standard Delivery
- £6: Royal Mail Tracked 24 Service
- £3.99: Large Letter - Royal Mail 1st Class Post (Untracked)
We offer free delivery on all orders over £150 (excludes outboard engines).
Orders placed before 1:00 PM (Monday-Friday) are usually dispatched the same working day.
Most parcels are delivered within 24 hours, but please allow extra time for courier delays that may occur outside our control.
For outboard engines, please contact us for a delivery quote.
Important: Please ensure your shipping address is correct before completing checkout. SSI Marine is not responsible for parcels sent to an incorrect address provided by the buyer.
Tracking Your Order
Once your order has been dispatched, you will receive a tracking number via email (after 5 PM on the day of dispatch).
Tracking is available only for parcels sent via Royal Mail Tracked 24.
Large Letter orders are sent via Royal Mail 1st Class Post (untracked).
Returns
We accept returns of unused and undamaged items within 30 days of purchase.
Returned items must be in sellable condition and include the original packaging.
Please do not tape, label, or write directly on the product's original box.
Important: Do not return items in their original product boxes only, they must be placed inside a protective outer box or bag. Parcels returned like the example below will be subject to a 20% restocking fee.
Return shipping costs are the customer's responsibility.
Please include your order details and reason for return inside the parcel.
Refunds
Refunds are issued for the item purchase price only (shipping costs are non-refundable).
All refunds will be made using the same payment method as your original order.
Items returned in poor condition or without proper packaging may incur a 20% restocking fee.
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