PRODUCT DETAILS
Spark Plug HT Lead (12") for Mercury 150HP / 175HP / 200HP Outboards
This 12" high-tension spark plug wire is a durable, marine-grade aftermarket replacement for V6 Mercury 2-stroke outboards. It delivers consistent spark transfer from the ignition coil to the spark plug, helping to maintain reliable engine performance and smooth operation at all speeds.
Fits Mercury 2-Stroke Outboards:
• 150HP
• 175HP
• 200HP
(Used on a variety of V6 configurations — please confirm length and connection type before purchase.)
Product Features:
• 12-inch spark plug HT lead
• Marine-grade insulation and boot materials
• Reliable spark delivery even in harsh marine conditions
• Resists heat, vibration, and corrosion
• Quick and simple installation
• High-quality aftermarket part
⚠️ This lead may appear similar to others but differs in length or connector angle — always confirm part length and compatibility with your outboard. If unsure, contact SSI Marine and we’ll be happy to help.
Why Buy from SSI Marine?
• UK stock – same-day dispatch before 1PM
• Local pickup available from Leigh, Manchester
• Trusted marine supplier with expert support
• VAT receipts on request
• All major cards accepted
Dependable ignition performance — backed by SSI Marine service and support.
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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