# 835257K12 Mercury MerCruiser Prop Hub & Seal | Genuine Quicksilver OEM Part

🔧 Product Description

  

Genuine Quicksilver Flo-Torq Reflex Propeller Hub Kit - Part Number: 835257K12

  

A genuine Quicksilver Flo-Torq Reflex propeller hub kit designed for selected Mercury and Mariner outboards. This hub kit helps reduce clutch rattle and transfers drive torque between the propeller shaft and compatible Flo-Torq / Reflex-style propellers.

  

⚙️ Key Features

  

• Genuine Quicksilver OEM propeller hub kit

• Correct Mercury part number 835257K12

• Flo-Torq Reflex hub kit design

• Designed to reduce propeller clutch rattle

• Used on selected Mercury / Mariner outboard propeller applications

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 835257K12 current OEM Reflex hub kit reference

  

OEM / Related Numbers:

  

• 835257K12

• 835257 K12

• 835257

• Flo-Torq Reflex Hub Kit

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Mercury / Mariner Flo-Torq Reflex propeller hub applications

  

Typically suits:

  

• Engine / propeller applications:

• Mercury / Mariner 25HP to 70HP non-BigFoot outboards with 13-spline propeller shaft applications

• Mercury / Mariner 40HP to 60HP FourStroke Reflex hub propeller applications

• Mercury / Mariner 40HP to 60HP Command Thrust / BigFoot applications where 835257K12 is specified

• Mercury / Mariner 70HP to 300HP outboards where the Flo-Torq II / Reflex hub kit is specified

• Mercury Verado outboards up to 300HP where the matching propeller and hub application specifies 835257K12

• MerCruiser Alpha sterndrive propeller applications where the matching propeller specifies 835257K12

• MerCruiser Bravo One sterndrive applications under 400HP where the matching propeller specifies 835257K12

• Mercury Vengeance and Spitfire propeller applications using the Reflex hub system

  

• HP Range: commonly 25HP - 70HP non-BigFoot / Reflex applications, with wider propeller-dependent applications where specified

• Engine / Drive Type: Mercury / Mariner outboard and selected MerCruiser propeller applications

• System Type: Flo-Torq Reflex propeller hub kit

  

🔌 Function

  

The hub kit transfers power from the propeller shaft into the propeller while cushioning drivetrain shock and reducing clutch rattle.

  

Common signs of failure:

  

• Propeller slips under acceleration

• Clutch rattle or propeller chatter

• Engine RPM rises without matching boat speed

• Hub damage after impact

• Poor propeller engagement or excessive propeller movement

  

📦 Condition

  

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 92.0 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 92.00 AUD | In stock |

## Images

- 835257K12 Mercury MerCruiser Prop Hub & Seal | Genuine Quicksilver OEM Part

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> Source: [Sawley's Auto and Marine](www.sawleysautoandmarine.com.au/products/835257k12-mercury-mercruiser-prop-hub-seal-genuine-quicksilver-oem-part)
> Updated: 2026-05-17