Description
Mercury 8M0084494 SpitFire 4-Blade Aluminum Propeller 14 x 17 RH
Upgrade acceleration, grip, and handling with the Mercury 8M0084494 SpitFire 4-blade aluminum propeller. Engineered to deliver the control of a four-blade propeller with speeds that rival a comparable three-blade, this 14-inch diameter x 17-pitch right-hand prop is designed for select Mercury and Mariner 90-115 HP Command Thrust FourStroke outboards, 135-300 HP TwoStroke and FourStroke outboards, and MerCruiser Alpha One and Bravo One sterndrives.
Key Features
- Genuine Mercury SpitFire 4-blade aluminum propeller
- 14 in. diameter x 17 in. pitch
- Right-hand rotation propeller
- Aggressive blade geometry helps improve handling, holding, acceleration, and top-end performance
- Provides 16-25% faster acceleration than a comparable 3-blade aluminum propeller
- Designed to deliver 4-blade control with top speed that rivals a 3-blade aluminum prop
- Patented Mercalloy aluminum alloy is engineered for strength, durability, and ductility during minor impacts
- Includes Flo-Torq II Hub Kit 835257K1 to help protect the drivetrain from many minor impact events
Fitment / Product Details
- Brand: Mercury
- Part Number: 8M0084494 / 48-8M0084494
- BU Part ID: Not provided
- Product Type: SpitFire 4-Blade Aluminum Propeller
- Application: Mercury and Mariner 90-115 HP Command Thrust FourStroke outboards, Mercury and Mariner 135-300 HP TwoStroke and FourStroke outboards, and MerCruiser Alpha One and Bravo One sterndrives where specified
- Engine Types: Mercury/Mariner Command Thrust, TwoStroke, FourStroke, and MerCruiser Alpha/Bravo I sterndrive applications
- HP Range: 90-115 HP Command Thrust FourStroke; 135-300 HP TwoStroke/FourStroke outboards
- Sterndrive Fitment: MerCruiser Alpha One and Bravo One sterndrives where this propeller and hub system are specified
- Serial Ranges: Not provided; verify by engine or drive serial number, gearcase, spline count, and propeller application chart
- Year Range: 90-115 HP Command Thrust FourStroke all years where specified; 135-300 HP TwoStroke/FourStroke all years where specified; Alpha and Bravo I sterndrive all years where specified
- Diameter: 14 in.
- Pitch: 17 in.
- Rotation: Right Hand
- Material: Aluminum / Mercalloy aluminum alloy
- Blade Count: 4
- Application Group: SpitFire 90 CT-300 HP, Alpha/Bravo I sterndrive
- Included Hub Kit: Flo-Torq II Hub Kit 835257K1
- Prop 65: Cancer and Reproductive Harm where shown in Mercury propeller catalog data
- Fitment Note: Confirm compatibility by Mercury part number, engine model, horsepower, gearcase size, spline count, WOT RPM range, thrust washer, prop nut hardware, owner’s manual, or Mercury propeller application chart before ordering.
What’s Included
- One Mercury 8M0084494 SpitFire 4-blade aluminum propeller
- Flo-Torq II Hub Kit 835257K1
- Thrust washer, prop nut, tab washer, and additional propeller hardware should be verified against your engine owner’s manual or Mercury propeller hardware chart
Expanded Fitment
- Mercury/Mariner 90 HP Command Thrust FourStroke outboards where specified
- Mercury/Mariner 115 HP Command Thrust FourStroke outboards where specified
- Mercury/Mariner 135 HP TwoStroke and FourStroke outboards where specified
- Mercury/Mariner 150 HP TwoStroke and FourStroke outboards where specified
- Mercury/Mariner 175 HP TwoStroke and FourStroke outboards where specified
- Mercury/Mariner 200 HP TwoStroke and FourStroke outboards where specified
- Mercury/Mariner 225 HP TwoStroke and FourStroke outboards where specified
- Mercury/Mariner 250 HP TwoStroke and FourStroke outboards where specified
- Mercury/Mariner 300 HP TwoStroke and FourStroke outboards where specified
- MerCruiser Alpha One sterndrive applications where this propeller is specified
- MerCruiser Bravo One sterndrive applications where this propeller is specified
- Not universal; verify gearcase, spline count, hub hardware, and WOT RPM before ordering
Why You Should Buy
- SpitFire design provides 4-blade handling with top-speed performance that rivals comparable 3-blade aluminum propellers
- Excellent choice for boaters wanting improved hole shot, acceleration, grip, and low-speed control
- Mercury prop guide recommends replacing a correctly matched 3-blade prop with the same pitch SpitFire when engine RPM is already appropriate
- Mercalloy aluminum construction balances strength, durability, and impact forgiveness
- Included Flo-Torq II hub kit helps protect the engine drivetrain from many minor damage-causing impacts
- OEM Mercury propeller engineered and tested for fit, function, and performance on compatible Mercury, Mariner, and MerCruiser applications
Common Applications
- Mercury 150 HP FourStroke aluminum propeller replacement where 17 pitch is appropriate
- Mercury and Mariner 90-115 HP Command Thrust propeller upgrades
- Mercury and Mariner 135-300 HP outboard propeller replacement
- MerCruiser Alpha One and Bravo One aluminum propeller replacement
- Deck boat, runabout, fish-and-ski, and family boat applications needing stronger acceleration and control
- Replacing a worn, damaged, slipping, or underperforming aluminum propeller
FAQ
- What is Mercury 8M0084494? It is a Mercury SpitFire 4-blade aluminum propeller with 14 in. diameter, 17 in. pitch, and right-hand rotation.
- What HP range does this propeller fit? It fits select 90-115 HP Command Thrust FourStroke outboards and 135-300 HP TwoStroke/FourStroke outboards where specified.
- Does this fit a Mercury 150 HP FourStroke? Yes, it is in the Mercury/Mariner 135-300 HP outboard application group, but pitch selection must be confirmed by your boat load, gearcase, current WOT RPM, and performance needs.
- Does this propeller include a hub kit? Yes. This propeller includes Flo-Torq II Hub Kit 835257K1.
- Is this right-hand or left-hand rotation? This is a right-hand rotation propeller.
- Is this aluminum or stainless steel? This is an aluminum propeller made with Mercury’s Mercalloy aluminum alloy.
- How does SpitFire compare to a 3-blade propeller? Mercury prop guide data states SpitFire can provide 16-25% faster acceleration, superior holding, and no top-speed penalty versus a comparable 3-blade aluminum propeller.
- How do I choose the correct pitch? If your current 3-blade propeller already puts the engine in the correct WOT RPM range, Mercury recommends replacing it with the same pitch SpitFire propeller.
- Do I need separate thrust washers or prop nut hardware? Check your engine owner’s manual for the correct thrust washer and prop nut part numbers for your exact engine or drive.
- How do I confirm fitment? Confirm using Mercury part number 8M0084494 / 48-8M0084494, horsepower, gearcase, spline count, WOT RPM range, propeller hardware, owner’s manual, or Mercury propeller application chart.