# 877805T Mercury MerCruiser Solenoid Valve | Genuine Quicksilver OEM Part

🔧 Product Description

  

Genuine Quicksilver Solenoid Valve - Part Number: 877805T

  

A genuine Quicksilver solenoid valve used in selected Mercury and Mariner EFI FourStroke outboard intake manifold assemblies. This valve forms part of the intake air / throttle fuel injection control system and is commonly fitted to 30HP, 35 Jet, 40HP, 50HP, 60HP and 60R EFI FourStroke applications where 877805T is specified.

  

⚙️ Key Features

  

• Genuine Quicksilver OEM solenoid valve

• Correct Mercury part number 877805T

• Used in EFI FourStroke intake manifold assemblies

• Fits selected 3-cylinder and 4-cylinder Mercury / Mariner EFI engines

• Cross-references with K5T48471, K005T48471 and 25341095 valve markings

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 877805T current OEM solenoid valve reference

  

OEM / Related Numbers:

  

• 877805T

• 877805

• K5T48471

• K005T48471

• 25341095

• REC877805T

  

Aftermarket / Verified Equivalents:

  

• Recmar: REC877805T

• K5T48471 replacement valve

• K005T48471 replacement valve

  

🚤 Compatibility

  

Commonly used on:

  

• Mercury / Mariner EFI FourStroke intake manifold assemblies

  

Typically suits:

  

• Engine models:

• Mercury 30HP EFI 3-cylinder FourStroke - serial 0T409000 to 1B226999

• Mercury 30HP EFI 3-cylinder FourStroke - serial 0P153500 to 0P400999

• Mercury 30HP EFI 3-cylinder FourStroke - serial 1C109093 to 1C456299

• Mercury 30HP EFI 3-cylinder FourStroke - serial 1C456300 and up

• Mercury 40HP EFI 3-cylinder FourStroke - serial 0T409000 to 1B226999

• Mercury 40HP EFI 3-cylinder FourStroke - serial 0P153500 to 0P400999

• Mercury 40HP EFI 3-cylinder FourStroke - serial 1B227000 to 1B355027

• Mercury 40HP EFI 3-cylinder FourStroke - serial 0P401000 to 0P515896

• Mercury 40HP EFI 3-cylinder FourStroke - serial 1C000001 to 1C043416

• Mercury 40HP EFI 3-cylinder FourStroke - serial 1C043417 to 1C456299

• Mercury 40HP EFI 3-cylinder FourStroke - serial 1C456300 and up

• Mercury 35HP EFI Jet 4-cylinder FourStroke - serial 1C453840 and up

• Mercury 40HP EFI 4-cylinder FourStroke - serial 0T409000 to 1B355222

• Mercury 40HP EFI 4-cylinder FourStroke - serial 0P153500 to 0P400999

• Mercury 40HP EFI 4-cylinder FourStroke - serial 0P401000 to 0P515896

• Mercury 40HP EFI 4-cylinder FourStroke - serial 1C000001 to 1C050251

• Mercury 40HP EFI 4-cylinder FourStroke - serial 1C050252 to 1C453839

• Mercury 40HP EFI 4-cylinder FourStroke - serial 0P515897 to 0P580772

• Mercury 40HP EFI Jet 4-cylinder FourStroke - serial 1C051324 to 1C453839

• Mercury 50HP EFI 4-cylinder FourStroke - serial 0T409000 to 1B355222

• Mercury 50HP EFI 4-cylinder FourStroke - serial 0P153500 to 0P400999

• Mercury 50HP EFI 4-cylinder FourStroke - serial 0P401000 to 0P515896

• Mercury 50HP EFI 4-cylinder FourStroke - serial 1C000001 to 1C050251

• Mercury 50HP EFI 4-cylinder FourStroke - serial 1C050252 to 1C453839

• Mercury 50HP EFI 4-cylinder FourStroke - serial 0P515897 to 0P580772

• Mercury 60HP EFI 4-cylinder FourStroke - serial 0T409000 to 1B355222

• Mercury 60HP EFI 4-cylinder FourStroke - serial 0P153500 to 0P400999

• Mercury 60HP EFI 4-cylinder FourStroke - serial 0P401000 to 0P515896

• Mercury 60HP EFI 4-cylinder FourStroke - serial 1C000001 to 1C050251

• Mercury 60HP EFI 4-cylinder FourStroke - serial 1C050252 to 1C453839

• Mercury 60HP EFI 4-cylinder FourStroke - serial 0P515897 to 0P580772

• Mercury 60HP EFI FourStroke - serial 1C104574 and up

• Mercury 60R EFI Racing FourStroke - serial 1C615064 and up

  

• HP Range: 30HP - 60HP, plus 35 Jet and 60R Racing where specified

• Engine Type: Mercury / Mariner EFI FourStroke outboard

• System Type: Intake manifold / idle air control / TFI solenoid valve circuit

  

🔌 Function

  

The solenoid valve operates within the EFI intake control system, helping the engine manage controlled air or intake-related flow through the intake manifold assembly.

  

Common signs of failure:

  

• Poor or unstable idle

• Hard starting, especially cold starts

• Engine stalls at low speed

• Hesitation or rough running during throttle transition

• Electrical fault, failed actuation or poor continuity at the solenoid

  

📦 Condition

  

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 156.2 AUD
- **Vendor:** Quicksilver
- **Tags:** Quicksilver Marine Parts | Oils Service Kits & Engine Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 156.20 AUD | In stock |

## Images

- 877805T Mercury MerCruiser Solenoid Valve | Genuine Quicksilver OEM Part

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> Source: [Sawley's Auto and Marine](www.sawleysautoandmarine.com.au/products/877805t-mercury-mercruiser-solenoid-valve-genuine-quicksilver-oem-part)
> Updated: 2026-05-17