Description
Quicksilver 8781051 Inline Check Valve 105-275HP
The Quicksilver 8781051 Inline Check Valve is designed for select Mercury and Mariner 105HP to 275HP 2-stroke outboards, including DFI, EFI, Jet, and 3.0L carbureted applications. This check valve also fits the 175HP XR2 JetDrive-SportJet where specified and is used for compatible fuel system service applications.
Key Features
- Quicksilver inline check valve
- Part number: 8781051
- Mercury part reference: 21-8781051
- Fits select Mercury and Mariner 105HP to 275HP 2-stroke outboards
- Designed for select DFI, EFI, Jet, and 3.0L carbureted applications
- Fits the 175HP XR2 JetDrive-SportJet where specified
- Easy to install with common shop tools
- Use owner’s manual, parts listing, or service manual for exact application and installation instructions
- Supersedes previous part number 878105
Fitment / Product Details
- Brand: Quicksilver
- Part Number: 8781051
- Mercury Part Reference: 21-8781051
- BU Part ID: 8781051
- Product Type: Inline check valve
- Application: Select Mercury and Mariner outboard fuel system check valve applications
- Engine Types: Mercury and Mariner 2-stroke DFI, EFI, Jet, and 3.0L carbureted outboards
- HP Range: Select 105HP to 275HP applications
- Additional Application: 175HP XR2 JetDrive-SportJet
- Brand Store Category: Parts
- Brand Store Subcategory: Fuel Systems
- Supersedes / Replaces: 878105
- Country of Origin: US
- Prop 65: No
- Packaged Quantity: 1
- UPC: 745061519145
- Eaches UPC: 745061519145
- Package Dimensions: 1.65 in L x 0.85 in H
- Package Weight: 0.06 lb
- Fitment Note: Match part number 8781051 or 21-8781051 to your Mercury or Mariner outboard model, horsepower, engine type, serial number, fuel system location, parts listing, owner’s manual, or service manual before ordering.
Expanded Fitment
- 150 / 175 / 200 EFI 2.5L: Serial range 0G960500-0T408999
- 200 DFI Jet Drive: Serial range 0E379931-0E435741
- 200 DFI M2 Jet Drive: Serial range 0E379931-0E433351
- 200 / 225 DFI 3.0L: Serial range 0T178500-0T800749
- 240 EFI Jet Drive: Serial range 0E379931-0E406399
- 240 EFI M2 Jet Drive: Serial range 0E379931-0E406399
- 240 EFI and 240 EFI M2 Jet Drive: Serial range 0E406400 and up
- 300X 3.0L EFI Pro Max: Serial range 0T235084-0T429939
- 175HP XR2 JetDrive-SportJet: Select applications where 8781051 is specified
Why You Should Buy
- Correct Quicksilver check valve for applications requiring part number 8781051
- Designed for select Mercury and Mariner 105HP to 275HP 2-stroke fuel system applications
- Supports compatible DFI, EFI, Jet, and 3.0L carbureted outboard service
- Useful for replacing worn, damaged, restricted, or missing inline check valves
- Easy installation with common shop tools when serviced according to manual instructions
- Updated replacement for previous part number 878105
Common Applications
- Mercury 150HP, 175HP, and 200HP EFI 2.5L fuel system service
- Mercury 200HP and 225HP DFI 3.0L fuel system service
- Mercury 200 DFI Jet Drive check valve replacement
- Mercury 200 DFI M2 Jet Drive check valve replacement
- Mercury 240 EFI Jet Drive and 240 EFI M2 Jet Drive service
- Mercury 300X 3.0L EFI Pro Max fuel system service
- 175HP XR2 JetDrive-SportJet check valve replacement
- Applications requiring Quicksilver 8781051 or Mercury 21-8781051
FAQ
- What is Quicksilver 8781051? Quicksilver 8781051 is an inline check valve for select Mercury and Mariner outboard fuel system applications.
- What is the Mercury part reference? This check valve is also referenced as Mercury 21-8781051.
- What horsepower range does this check valve fit? This part fits select 105HP to 275HP Mercury and Mariner 2-stroke outboard applications.
- What engine types does this fit? This check valve fits select Mercury and Mariner 2-stroke DFI, EFI, Jet, and 3.0L carbureted outboards.
- Does this fit 150 / 175 / 200 EFI 2.5L engines? Yes. It fits select 150 / 175 / 200 EFI 2.5L applications with serial range 0G960500-0T408999.
- Does this fit 200 / 225 DFI 3.0L engines? Yes. It fits select 200 / 225 DFI 3.0L applications with serial range 0T178500-0T800749.
- Does this fit Jet Drive applications? Yes. It fits select 200 DFI Jet Drive, 200 DFI M2 Jet Drive, 240 EFI Jet Drive, and 240 EFI M2 Jet Drive applications listed by serial range.
- Does this fit the 175HP XR2 JetDrive-SportJet? Yes. This check valve is listed for the 175HP XR2 JetDrive-SportJet where specified.
- Is this a 90-degree check valve? No. This listing is for an inline check valve.
- Does this replace another part number? Yes. Quicksilver 8781051 supersedes previous part number 878105.
- What is the UPC? The UPC is 745061519145.
- Does this item have a Prop 65 warning? No. The provided Prop 65 value is No.
- How should I confirm fitment? Match part number 8781051 or 21-8781051 to your Mercury or Mariner outboard model, horsepower, engine type, serial number, fuel system location, parts listing, owner’s manual, or service manual before ordering.