Home / 8 NGK Spark Plugs - For Mariner 225 Outboard Motor
8 NGK Spark Plugs - For Mariner 225 Outboard Motor
$54.77
Free shipping on all orders.
Qty In Stock: 20
The NGK 6431 Spark Plug (BP5HS) is a dependable non-resistor plug for 2-stroke marine engines, providing quick starts and solid ignition in compact outboards and small marine motors.
Features & Benefits:
🔧 Hot-range copper plug ideal for slower marine use
🔧 Non-resistor for classic marine engine setups
🔧 Durable design resists marine corrosion
🔧 Popular fit for small Evinrude and Mercury engines
Specifications:
Brand & Part Number: NGK 6431 BP5HS
Material: Copper
Thread Size: 14mm
Reach: 12.7mm (0.5 in.)
Hex Size: 13/16 in. (20.6mm)
Seat Type: Gasket
Resistor: No
Gap: 0.030 in. (0.76mm)
Choose BP5HS for reliable spark in classic 2-stroke outboard engines—available now!
Shipping Info
Free shipping on every US order. In-stock parts typically ship within 1 business day from Texas.
Returns
30-day returns on unused parts in original packaging. Wrong or defective items are replaced or refunded. See the return policy.
How do I confirm this part fits?
Match the brand and part number to your vehicle, or use the Parts Finder on the homepage. Contact us before ordering if you are unsure.
Are these parts new?
Yes. TXN Supply Co sells new parts from trusted OEM-quality brands — not remanufactured cores.
How fast will my order ship?
In-stock orders ship within 1 business day. Delivery time depends on your ZIP; most US addresses arrive in 2–5 business days.
What is your return policy?
Unused items can be returned within 30 days in original packaging. Customer-initiated returns may include a restocking fee and return shipping.
Customer Reviews
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It didnât fit my motor it said it would
— nk6c9....
