PRODUCT DETAILS
Timing Belt for Mercury Mariner Outboards
Maintain the performance and reliability of your Mercury or Mariner outboard with this premium-quality aftermarket Timing Belt, manufactured to OEM specifications for a precise fit and dependable operation.
The timing belt is a critical engine component that synchronises the crankshaft and camshaft, ensuring accurate valve timing for optimum engine performance.
Fits Mercury & Mariner Outboards
4-Stroke Models
Carburettor & EFI Engines
- 75 HP
- 80 HP
- 90 HP
- 100 HP
- 115 HP
Replaces Mercury / Mariner Part Number
- 57-804145
OEM part numbers are used for reference only.
Features
- Premium marine-grade aftermarket timing belt
- Manufactured to OEM specifications
- Direct replacement
- High-strength reinforced construction
- Excellent wear resistance
- Reliable valve timing
- Suitable for both carburettor and EFI engines
- Long service life
Why Replace Your Timing Belt?
A worn timing belt may cause:
- Poor engine performance
- Difficult starting
- Loss of power
- Incorrect valve timing
- Engine damage if the belt fails
Replacing the timing belt at the recommended service interval helps maintain engine reliability and can prevent costly repairs.
Why Buy From SSI Marine?
- Premium marine-grade aftermarket parts
- Workshop-tested by SSI Marine
- UK stock ready for immediate dispatch
- Same working day dispatch before 1 PM (Monday-Friday)
- Royal Mail Tracked 24 delivery
- Technical support from experienced outboard specialists
- Collection available from our Leigh, Manchester workshop
Buyer Responsibility
Please check your engine model, serial number and existing part number before ordering.
Although this timing belt fits many Mercury and Mariner engines, there are different belt types used across the range.
If you are unsure, send us your engine model and serial number and we will be happy to confirm compatibility before purchase.
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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