Mercury 42738CP1 Black Max Propeller — 12.5″ × 8″ RH Aluminum 3-Blade Extra Cup

Save $43.50
MercurySKU: 42738CP1

Price:
Sale price$173.99 Regular price$217.49

Description

Mercury 42738CP1 Black Max Propeller — 12.5″ × 8″ RH Aluminum 3-Blade Extra Cup

The Mercury Black Max 42738CP1 propeller delivers smooth performance, added lift, and reliability for mid-range outboards and pontoon applications. Built from Mercury’s exclusive Mercalloy aluminum alloy, this 12.5″ × 8″ right-hand prop features an Extra Cup (XC) blade design that enhances thrust and control at cruising speeds. The included Flo-Torq Reflex hub helps safeguard your drivetrain from minor impact damage, while the Phantom Black enamel finish ensures long-lasting corrosion protection.

Applications

For Mercury and Mariner 25–30HP FourStroke BigFoot/Command Thrust, 30HP TwoStroke, 30HP FourStroke (2005 and earlier), and 40–60HP FourStroke outboards. Always confirm propeller dimensions, cup design, and hub compatibility in your owner’s or service manual before installation.

Shipping & Returns

Fast processing and shipping from our marine parts warehouse. 30-day returns on unopened, unused items. Review our Refund Policy for full details.

Key Facts

  • BU Part ID: 42738CP1
  • Brand: Mercury Propeller
  • Category: Propellers
  • Subcategory: Black Max
  • UPC: 745061869509
  • Country of Origin: United States
  • Diameter × Pitch: 12.5″ × 8″
  • Rotation: Right Hand (RH)
  • Blades: 3
  • Material: Mercalloy Aluminum
  • Hub System: Flo-Torq Reflex (835257K12)
  • Finish: Phantom Black Gloss Enamel
  • Blade Geometry: Extra Cup (XC) — Optimized for pontoon boats
  • Engine Fit: Mercury / Mariner 25–60HP Outboards
  • Package Length: 12.1″
  • Package Width: 11.5″
  • Package Height: 6.5″
  • Package Weight: 4.02 lb
  • Prop 65 Code: Cancer

What’s Included

  • 1 × Mercury Black Max Propeller — 42738CP1 (12.5″ × 8″ RH, 3-Blade Aluminum, Extra Cup)
  • 1 × Flo-Torq Reflex Hub Kit (835257K12)

Service Notes

  • Install with the included Flo-Torq Reflex hub kit to ensure proper engagement and vibration control.
  • Inspect propeller blades, thrust washer, and hub components for wear before use.
  • Verify correct WOT RPM range and torque specifications using Mercury service procedures after installation.

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