PRODUCT DETAILS
Mercury / Mariner 3.9–115 HP Outboard Carburettor Float Needle & Seat Kit – 2-Stroke
Quality aftermarket carburettor float needle and seat repair kit for selected older Mercury and Mariner 3.9–115 HP 2-stroke outboard engines, replacing OEM part number 1399-1473.
Designed for compatible carburettors to help regulate fuel entering the float chamber. A worn needle or seat can cause fuel flooding, leakage or incorrect fuel levels.
Mercury / Mariner Outboard Fitment
Suitable for selected older Mercury and Mariner 2-stroke outboards fitted with the corresponding Tillotson carburettor needle and seat assembly.
| HP | Engine Application |
|---|---|
| 3.9–6 HP | Selected early single-cylinder Mercury engines |
| 7.5–9.8 HP | Selected early Mercury engines |
| 10–15 HP | Selected older Mercury / Mariner models |
| 20–40 HP | Selected early Mercury models |
| 45–65 HP | Selected older Mercury models |
| 70–95 HP | Selected older Mercury inline engines |
| 100–115 HP | Selected older Mercury inline engines |
Important: These are broad historical application groups. Compatibility is determined by the original carburettor assembly and needle seat specification, not horsepower alone.
Mercury / Mariner OEM Replacement Part Numbers
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1399-1473
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1399-1138
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1395-9258
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1395-9258-1
Aftermarket Cross-References
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Recmar: REC1399-1473
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Sierra: 18-7057
Product Details
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Condition: New
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Quality: Marine-grade aftermarket
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Product: Carburettor Float Needle & Seat Kit
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Engine Type: 2-Stroke
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Application: Selected older Mercury / Mariner outboards
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Main OEM Reference: 1399-1473
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Seat Bore: 0.078 inch (Sierra equivalent specification)
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Quantity: 1 × Needle and Seat Kit
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Stock: UK stock, ready for dispatch
Please refer to the product photographs for the exact components supplied.
This is a carburettor needle and seat kit, not a complete carburettor repair kit.
OEM part numbers are used for identification purposes only.
Important – Check Compatibility
Please confirm your engine model, serial number and original carburettor needle and seat reference before ordering.
Different needle and seat assemblies were fitted to older Mercury / Mariner carburettors, including versions with different seat bore sizes.
If the parts look the same as yours, this does not always mean they are correct for your outboard.
If unsure, contact SSI Marine with your engine details before purchasing.
Why Buy From SSI Marine?
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Workshop-tested genuine and aftermarket outboard parts
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Over 10,000 genuine and aftermarket marine parts stocked in the UK
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Same-day dispatch before 1 PM Monday–Friday
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Royal Mail Tracked 24 UK delivery
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Collection available from Leigh, Greater Manchester
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Technical support from experienced marine engineers
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10 years supplying the UK marine market
Buyer Responsibility: Please confirm compatibility before purchasing.
SHIPPING & DELIVERY
Delivery & Returns Policy
Delivery
Standard Delivery
- £7: 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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