# 891645A01 Mercury MerCruiser Throttle Button | Genuine Quicksilver OEM Part

🔧 Product Description

  

Genuine Quicksilver Throttle Only Button - Part Number: 891645A01

  

A genuine Quicksilver throttle-only button used in selected Mercury, Mariner, MerCruiser and Quicksilver remote control assemblies. This button allows throttle advance without engaging forward or reverse gear on compatible control boxes.

  

⚙️ Key Features

  

• Genuine Quicksilver OEM throttle control button

• Correct Mercury part number 891645A01

• Replaces earlier 891645 throttle button reference

• Used on Mercury / Quicksilver panel-mount remote controls

• Commonly fitted to 4000 Gen II control assemblies

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 891645A01 → Supersedes 891645

• 891645 earlier OEM throttle-only button reference

  

OEM / Related Numbers:

  

• 891645A01

• 891645

• Mercury 4000 Gen II throttle button

• Quicksilver throttle-only button

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Mercury / Mariner / MerCruiser / Quicksilver remote control boxes with throttle-only warm-up function

  

Typically suits:

  

• Control models:

• Mercury 4000 Gen II panel-mount remote control assemblies

• Quicksilver 4000 Gen II panel-mount remote control assemblies

• Mercury panel-mount control boxes using throttle-only button 891645A01

• MerCruiser panel-mount control boxes using throttle-only button 891645A01

• Mercury / Mariner outboard remote controls where 891645A01 is specified

• Quicksilver remote control assemblies replacing earlier throttle button 891645

  

• System Type: Remote control / throttle-only button

• Application Type: Control-box-specific part, not an engine-serial-specific component

  

🔌 Function

  

The throttle button allows the operator to advance throttle in neutral for warm-up, starting or service procedures without engaging gear.

  

Common signs of failure:

  

• Throttle-only function will not engage

• Button cracked, stuck or missing

• Control box does not release throttle-only mode correctly

• Button does not spring back

• Loose or incomplete control-box button assembly

  

📦 Condition

  

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 9.75 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 9.75 AUD | In stock |

## Images

- 891645A01 Mercury MerCruiser Throttle Button | Genuine Quicksilver OEM Part

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> Source: [Sawley's Auto and Marine](www.sawleysautoandmarine.com.au/products/891645a01-mercury-mercruiser-throttle-button-genuine-quicksilver-oem-part)
> Updated: 2026-05-17