- zinc - £8.99
- Aluminium - £8.99
40–300 HP Johnson Evinrude Outboard Curved Block Anode 431708 – Zinc / Aluminium
PRODUCT DETAILS
Marine-grade aftermarket curved engine block sacrificial anode for selected Johnson and Evinrude 40–300 HP 2-stroke outboard engines, primarily manufactured between 1982 and 1994.
Replaces Johnson Evinrude part numbers 431708 / 397111.
Designed to help protect the engine's metal components against galvanic corrosion.
Available in Zinc or Aluminium.
Choose Your Anode Material
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Zinc: Particularly suitable for saltwater use.
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Aluminium: Suitable for saltwater and brackish water applications.
Fitment
Suitable for selected Johnson and Evinrude 2-stroke outboards (1982–1994):
40–70 HP
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40 HP
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45 HP
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48 HP
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50 HP
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55 HP
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60 HP
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65 HP
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70 HP
75–120 HP
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75 HP
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85 HP
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88 HP
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90 HP
-
100 HP
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110 HP
-
112 HP
-
115 HP
-
120 HP
125–300 HP
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125 HP
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130 HP
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135 HP
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140 HP
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150 HP
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175 HP
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185 HP
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200 HP
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225 HP
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235 HP
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250 HP
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275 HP
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300 HP
Important: These are potential applications within the engine range, not confirmation that every listed model uses this anode. Compatibility depends on the engine year, model number and anode location.
Replaces Johnson / Evinrude Part Numbers
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431708
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0431708
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397111
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0397111
OEM part numbers are used for identification purposes only.
Product Details
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Curved engine block sacrificial anode
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Available in Zinc or Aluminium
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Selected Johnson / Evinrude 2-stroke outboards
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Curved profile for engine block mounting
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Marine-grade aftermarket replacement
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Helps protect metal components against galvanic corrosion
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Price is for ONE anode
Package Includes
1 × Curved Block Anode
Supplied in your selected material:
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Zinc
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Aluminium
Mounting hardware not included unless otherwise specified.
Important Compatibility Information
This anode does not fit every Johnson or Evinrude 40–300 HP outboard.
Before ordering, please check:
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Exact engine model and year
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Engine model / serial number
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Original anode part number
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Existing anode shape and mounting dimensions
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Correct mounting position
If the part looks the same as yours, this does not always mean it is the correct part for your outboard.
If unsure, please contact SSI Marine before purchasing.
Why Buy From SSI Marine?
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Workshop-tested aftermarket & OEM-spec parts
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UK stock
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Same-day dispatch before 1 PM Monday–Friday
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Royal Mail Tracked 24
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Collection available from Leigh, Greater Manchester
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Technical support available
Buyer Responsibility
Please confirm compatibility with your exact engine model, year and serial number 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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