Description

Mercury MerCruiser Quicksilver 828156A12 is a genuine Black Max aluminum propeller in a 9″ diameter x 9″ pitch, right-hand rotation, 3-blade configuration. Mercury describes the Black Max family as its versatile, value-focused aluminum prop line, built from patented Mercalloy for durability and dependable all-around performance. Current part-specific references for 828156A12 identify it as the 9 x 9 RH version for small-horsepower Mercury and Mariner outboards.

Key Features

• Genuine Mercury Black Max propeller, part number 828156A12.
• 9″ diameter x 9″ pitch, right-hand rotation, 3 blades.
• Aluminum construction using Mercury’s patented Mercalloy alloy.
• Current part-specific listings show an 8-tooth spline with a Flo-Torq I round rubber hub / rubber-bushed hub already installed.
• Black Max props are positioned by Mercury as reliable, durable, and easy to maintain.

Engine Compatibility

Current part-specific references commonly associate 828156A12 with Mercury and Mariner 6 HP, 8 HP, 9.9 HP, and 15 HP TwoStroke outboards, 9.9 HP FourStroke (1995-2004), 15 HP FourStroke (through 2007), and SeaPro / Marathon 10-15 HP applications. The strongest supportable match is by prop shaft spline, hub style, and current prop setup rather than by horsepower alone.

Serial Number Fitment Notice

Verify fitment by engine serial number, gearcase, prop shaft spline, and hub style before ordering. With 828156A12, the important checks are the exact 9 x 9 RH dimensions, the 8-tooth spline, and the correct rubber-hub small-outboard application, especially when several Mercury props can look similar while using different hubs or shaft setups.

When This Part Needs Replacement

Replace the propeller when blades are bent, chipped, cracked, badly worn, or when the current prop no longer delivers the correct RPM and load performance for the boat. Because Black Max is Mercury’s practical all-around aluminum prop family, it is a common replacement choice when you want OEM-style fit, dependable service, and straightforward repairability.

Installation Notes

Confirm the correct 8-tooth spline and rubber hub setup before installation. Current listings for 828156A12 show the hub already installed, but it is still important to match the prop against the exact engine application and verify smooth fit on the shaft before final tightening. After installation, prop choice should be checked against the engine’s recommended WOT RPM range under normal boat load.

Alternate/Superseded Part Numbers

Current seller references show 42522A10, 42522A11, 42522A12, and 828156A45 as earlier or superseded related OEM numbers connected to 828156A12.

Parts Desk Insight

The easy mistake with this prop is ordering by diameter and pitch only. For 828156A12, the better match is 9 x 9 RH + 8-tooth spline + rubber-hub small-outboard application, because that combination matters more than the size stamp alone when you want the boat to run properly.

Shipping: Ships same or next day for fast Canada wide shipping.