click to view larger image

Mercury Mariner 6-15hp Zinc Anode (OSA421)

Genuine Part # : 42121A2

In Stock
  • Free Shipping


  • 1 YEAR


  • ISO 9001 Certified
    ISO 9001


  • payment payment payment

    Payment Methods

This part replaces part #: 42121A2.

This part suits the following engines:
2 Stroke
Mercury Mariner 6hp 2 Stroke USA built models 1987-2001 (suits serial # 9461526 to 0T800999)
Mercury Mariner 8hp 2 Stroke USA built models 1987-2001 (suits serial # 0A197112 to 1B000001 & up),
Mercury Mariner 9.9hp 2 Stroke
USA built models 1987-2016 (suits serial # 9461526 to 1B000001 & up),

Mercury Mariner 15hp 2 Stroke USA built models 1987-2016 (suits serial # 9542620 to 0P016999)

4 Stroke
Mercury Mariner F9.9hp 4 Stroke 1997-2004 (suits serial # 0H000058 to 1B226999)
Mercury Mariner F15hp 4 Stroke 1997-2006 (suits serial # 9973100 to 1B727495).


About The Brand

Outboard Spares brand of parts are tested in Australia's harsh marine environment with a focus on quality and durability. Outboard Spares parts are used by professional fishermen who depend on their parts to stay on the water and in business. So next time you service your engine choose what the professionals use, choose Outboard Spares.

  • Standard Shipping is free on all orders. Oils & Lubricant products can only be sent via Standard Shipping.
  • Express Shipping is $10 flat rate.
  • Pick up is available from our warehouse at 1/84 Brunel Road, Seaford VIC 3198 between the hours of 8:30am to 3:30pm weekdays. You will be notified by email when your order is ready for pick up.

Delivery Time

Orders are dispatched same business day if ordered before 3:00pm AEDT. All orders are dispatched from Melbourne, Victoria and are sent via Australia Post.

For delivery time estimates with Australia Post please use their delivery calculator here:

If you have any questions relating to shipping, please contact us by emailing

Be the first to review this product!

Help other shoppers by writing reviews for products you have purchased.

Write a review