PRODUCT DETAILS
Cylinder Head Gasket for Mariner Outboard 20HP 25HP 2-Stroke (1986-1992) – Aftermarket Replacement
Looking for a replacement cylinder head gasket for your Mariner 20HP or 25HP 2-stroke outboard engine? This high-quality aftermarket gasket is designed for Japanese-made Mariner models and is ideal for engine repairs, ensuring proper sealing and compression to restore performance.
Compatible Mariner Outboard Models:
✔ 20HP Models: 20C (Serial Number starting with 6A9…)
✔ 25HP Models: 25C (Serial Number starting with 695…)
✔ For 2-Stroke Engines (1986-1992)
⚠ Not compatible with Mercury-made Mariner models
Replaces Mariner OEM Part Number:
🔹 27-81555M
Key Features & Benefits:
✅ Essential for Engine Repair – Designed for replacing worn or damaged gaskets
✅ High-Quality Aftermarket Alternative – Reliable and cost-effective option
✅ Marine-Grade Durability – Built to withstand extreme conditions
✅ Ensures Proper Sealing & Compression – Helps maintain engine efficiency
✅ Direct Replacement for OEM Part – Easy to install with a precise fit
Why Choose SSI Marine?
✔ Premium Marine Parts at Competitive Prices
✔ Fast & Reliable UK Shipping – All Parts In Stock
✔ Expert Support – Contact Us for Compatibility Assistance
✔ Trusted UK Seller – Collection Available from Leigh, Manchester (Mon–Fri, 9 AM–5 PM)
⚠️ If the part looks the same as yours, it does not always mean it is the correct fit. Please double-check compatibility before purchase.
Buy Now to Complete Your Outboard Engine Repair! 🚤🔧
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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