PRODUCT DETAILS
75HP–115HP Mercury / Mariner Outboard Base Gasket (4-Stroke, 1999 & Up)
Replaces Quicksilver 27-8587321 / 27-858732002 – UK Stock
Product Description
Powerhead / base gasket for Mercury and Mariner 75HP, 90HP, and 115HP 4-stroke outboards, including EFI models. Fits engines from 1999 and newer. This gasket seals the lower part of the powerhead to prevent water and exhaust leaks.
Fitment
Fits the following 4-stroke models:
- 
115 EFI – 0T178500 to 0T800999 
- 
115 EFI – 0T801000 to 1B226999 
- 
90 – 0G960500 to 0T800999 
- 
90 – 0T801000 to 1B226999 
- 
75 – 0G960500 to 0T800999 
- 
75 – 0T801000 to 1B226999 
- 
75 Bodensee – 0G960500 to 0T800999 
- 
75 Bodensee – 0T801000 to 1B226999 
Replaces Quicksilver / Mercury Part Numbers
- 
27-8587321 
- 
27-858732002 
- 
8587321 
- 
858732002 
Why Buy from SSI MARINE?
- 
All parts are in UK stock 
- 
Fast same-day dispatch before 1 PM (Mon–Fri) 
- 
Collection available from our Leigh (Manchester) workshop 
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Carefully selected based on service experience 
If you’re unsure about compatibility, contact us with your serial number. We're here to help.
Shipping & Collection
- 
Tracked 24-hour delivery available 
- 
Local collection (Mon–Fri, 9AM–5PM) 
Reliable replacement for your Mercury / Mariner base gasket – order today.
SHIPPING & DELIVERY
Delivery:
We offer free shipping on all orders over £150 (excluded outboard engines, trailers)
Standard Shipping - £ 8.50
Orders are typically shipped within 1 business day of receipt of payment. We ship via Royal Mail Tracked 24 delivery service. Delivery times vary depending on the delivery destination.
For engines delivery cost please ask for a quote.
It is the buyer's responsibility to ensure that the correct shipping address is supplied.
All item(s) will be despatched to the registered address.
Tracking your order:
Once your order has been shipped, you will receive a tracking number via email. You can track your order online using the tracking number provided.
Returns:
We accept returns of unused and undamaged items within 30 days of purchase.
To return an item please contact us for a return authorisation number. Return shipping costs are the responsibility of the customer.
Refunds:
Refunds will be issued for the purchase price of the item, less shipping costs. Refunds will be issued in the same form of payment as the initial purchase.

 
                                 
                                








