Genuine Quicksilver Mercury Mariner Outboard 4 Stroke Engine Oil Drain Sump Plug Gasket 26-8M0188221
PRODUCT DETAILS
Genuine Quicksilver Engine Oil Drain Plug / Sump Plug Gasket
Genuine Quicksilver engine oil drain plug gasket / sump plug washer for selected Mercury and Mariner 4-stroke outboard engines.
Designed to provide the correct seal around the engine oil drain / sump plug and ideal for replacement during routine engine oil changes and servicing.
Suitable for selected Mercury and Mariner applications requiring:
26-8M0188221
This is a Genuine Quicksilver / Mercury Marine part, not an aftermarket replacement.
Fits Selected Mercury & Mariner Outboards
Suitable for a wide range of selected Mercury and Mariner 4-stroke outboard engines using engine oil drain plug gasket:
26-8M0188221
Mercury and Mariner have produced numerous engine families and configurations, so please confirm the correct gasket using your engine model, serial number or original part number before ordering.
Genuine Quicksilver Part Number
- 26-8M0188221
- 8M0188221
- 268M0188221
Genuine Quicksilver / Mercury Marine Part
OEM Part Number: 26-8M0188221
Product Features
- Genuine Quicksilver part
- Mercury Marine OEM component
- Engine oil drain plug gasket
- Engine oil sump plug gasket
- Sump plug washer
- Engine oil drain washer
- For selected Mercury outboards
- For selected Mariner outboards
- 4-stroke applications
- Designed for the corresponding Mercury Marine application
- Ideal for routine engine oil servicing
- New
- UK stock
Important – ENGINE OIL Drain Plug Gasket
This gasket is for the ENGINE OIL / SUMP drain plug.
It should not be confused with the gearbox / lower unit gear oil drain plug gasket.
When carrying out a complete outboard service, please remember that the engine oil sump plug and gearbox oil drain/fill plugs can require different sealing gaskets.
Recommended Replacement During Oil Service
We recommend inspecting the drain plug gasket whenever carrying out an engine oil change.
A drain plug gasket can become compressed or damaged after use. Replacing it during routine servicing helps maintain a reliable seal around the engine oil drain plug and reduces the risk of oil seepage.
Important – Please Check Compatibility
Please do not order by horsepower or appearance alone.
Mercury and Mariner have produced many different 4-stroke engine families, and different drain plug gaskets may be used depending on the exact engine.
Before purchasing, please check:
- Engine is Mercury or Mariner
- Engine is 4 Stroke
- Exact engine model
- Engine serial number
- Existing sump plug gasket
- Original Mercury / Quicksilver part number
For the safest identification, confirm that your engine requires:
26-8M0188221
If the gasket looks the same as yours, this does not always mean it is the correct one for your outboard.
If you are unsure, please send us your engine model and serial number before purchasing and our technical team will be happy to check compatibility.
Why Buy From SSI Marine?
- Genuine Quicksilver / Mercury Marine part
- Workshop-tested products
- More than 10 years supplying outboard parts
- UK stock
- Same working day dispatch before 1 PM Monday–Friday
- Royal Mail Tracked 24
- Technical support from experienced outboard specialists
- Collection available from Leigh, Greater Manchester
- Workshop open Monday–Friday, 9 AM–5 PM
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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