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Home  >  Outboard  >  Mercury Outboard  >  Electrical System | Mercury Outboard  >  Spark Plugs | Mercury Outboard  > Mercury Spark Plug for 500-600hp V12 Outboards - 8M0180173

Mercury Spark Plug for 500-600hp V12 Outboards - 8M0180173

Genuine OEM Iridium Spark Plug
Item #: 8M0180173  Cross Reference#: 8M0178257, 8M0180173  
Manufacturer Item: 8M0180173
Manufacturer: Mercury Marine
Available: In Stock
32.99
Each
Quantity:
Quantity Price
1 32.99
Mercury Spark Plug

Ignition System

Genuine Mercury Spark Plug - 8M0180173

OEM Mercury Iridium Spark Plug for 500-600hp V12 outboards.

Delivers reliable ignition, improved combustion efficiency, and longer service life.

Compatible Applications

Mercury V12 Outboards. Verify with your engine serial number for exact fitment.

Important Fitment Note

Always confirm compatibility using your engine serial number before ordering.

OEM & Cross Reference Numbers

OEM 8M0180173, 8M0178257

What This Part Is Used For

This iridium spark plug provides reliable ignition for Mercury V12 outboard engines.

Replacing spark plugs at recommended intervals improves starting, performance, and fuel efficiency.

Key Features and Benefits

  • Genuine Mercury OEM quality
  • Iridium electrode for longer life and better spark
  • Optimized for high-performance V12 engines
  • Improves combustion efficiency

FAQ

What engines does this spark plug fit?
Mercury V12 outboards. Verify with serial number.

How often should spark plugs be replaced?
Follow the Mercury service schedule for your specific model (typically every 100-200 hours or annually).

Dealer Discounts & Store Policies

Dealer / Marine Industry Discounts

Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.

Apply for a Dealer Account

Shipping Policy

  • Free shipping on orders over $100 continental U.S.
  • Orders ship via UPS, USPS, and FedEx.
  • Orders received before 5:30 PM EST ship the same business day.
  • Typical delivery time is 1-5 business days.

30-Day Return Policy

  • Returns accepted within 30 days of delivery.
  • Parts must be new, unused, and in original packaging.
  • Installed parts are not returnable.
  • Return authorization is required before sending items back.

Need help with a return or order question?
Contact Us
Phone: 941-721-3000

Searchable Terms

Mercury V12 spark plug, 8M0180173, Mercury outboard spark plug, V12 iridium spark plug, 8M0178257
 

Searchable Part Numbers

8M0180173 8M0178257

Brand

OEM or Aftermarket
OEM
Manufacturer
Mercury