Quicksilver aluminium anode kit 42121Q02 is a genuine set featuring two square sacrificial anodes and associated mounting hardware. The anodes are mounted on the standard gearcase below the anti-cavitation plate and protect compatible outboard motors against galvanic corrosion.
The kit is manufactured from aluminium and can be used in both fresh water and salt water. Each anode measures approximately 42.2 x 27.9 x 10.7 mm and has a hole diameter of approximately 7.1 mm. The anodes meet or exceed the MIL-A-24779(SH) standard.
The anode kit is documented for select Mercury and Mariner engines, including 6, 8, and 9.9 hp 2-stroke from model year 1986 and newer, F8/F9.9 FourStroke from 1995-2004, F13.5 FourStroke from 2001 and newer, as well as F15 FourStroke from 1998-2006. It also fits documented XR10, 10 Marathon, 10 SeaPro, and 10 Viking models, as well as Force 9.9/15 hp 2-stroke with standard gearcase from model year 1998.
The part number is 42121Q02, and the kit replaces the previous numbers 42121A1 and 42121A2. Since compatibility depends on engine variant, model year, and serial number, engine information and the existing part number should always be checked before ordering.
The anodes should be inspected regularly and replaced when the material is visibly degraded, so that the gearcase continues to have the intended corrosion protection.
Key featuresGenuine Quicksilver anode kit
Part number: 42121Q02
Content: 2 aluminium anodes and mounting hardware
Mounting: Under the anti-cavitation plate on standard gearcase
Suitable for fresh water and salt water
Standard: MIL-A-24779(SH)
Replaces 42121A1 and 42121A2
Documented for select Mercury, Mariner, and Force outboards
Check model year, serial number, and part number before purchase
