• 26804875 Mercury MerCruiser Seal Kit | Genuine Quicksilver OEM Part
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26804875 Mercury MerCruiser Seal Kit | Genuine Quicksilver OEM Part

26804875 Mercury MerCruiser Seal Kit | Genuine Quicksilver OEM Part

$34.50 AUD
$34.50 AUD
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✓ Authorised Volvo Penta Dealer · Marine & auto specialists · Ships Australia-wide

🔧 Product Description

Genuine Quicksilver Direct Injector Seal Kit - Part Number: 26-804875

A genuine Quicksilver seal kit for the air or direct injector fitted to selected Mercury and Mariner OptiMax / DFI outboard engines and Sport Jet powerheads.

Each kit services one injector and contains the sealing components required between the injector, fuel rail and cylinder-head assembly. Correct injector sealing is critical to maintaining the pressurised air-and-fuel system used by Mercury direct-injection engines.

⚙️ Key Features

  • Genuine Quicksilver OEM injector seal kit
  • Correct Mercury part number 26-804875
  • Services one air or direct injector
  • Contains the injector sealing O-rings required for installation
  • Used across 1.5L, 2.5L and 3.0L OptiMax / DFI engine families

🚤 Compatibility

Commonly used on

  • Mercury and Mariner OptiMax / DFI direct-injection systems
  • Mercury Pro XS and Mercury Racing direct injectors
  • Mercury Sport Jet direct-injection powerheads

Typically suits

  • Engine models:
  • Mercury 75 DFI 1.5L 3-cylinder - serial 0T980000 to 1B226999
  • Mercury 75 DFI 1.5L 3-cylinder - serial 1B227000 to 1B417701
  • Mercury 75 DFI 1.5L 3-cylinder - serial 1B417702 to 1B736885
  • Mercury 75 DFI 1.5L 3-cylinder - serial 1B736885 and above
  • Mercury 80 Jet DFI 1.5L 3-cylinder
  • Mercury 90 DFI 1.5L 3-cylinder - serial 0T801000 to 1B226999
  • Mercury 90 DFI 1.5L 3-cylinder - serial 1B227000 to 1B417701
  • Mercury 90 DFI 1.5L 3-cylinder - serial 1B417702 to 1B736885
  • Mercury 90 DFI 1.5L 3-cylinder - serial 1B736885 and above
  • Mercury 115 DFI 1.5L 3-cylinder - serial 0T801000 to 1B226999
  • Mercury 115 DFI 1.5L 3-cylinder - serial 1B227000 to 1B417701
  • Mercury 115 DFI 1.5L 3-cylinder - serial 1B417702 to 1B736885
  • Mercury 115 DFI 1.5L 3-cylinder - serial 1B736885 and above
  • Mercury 115 Pro XS 1.5L
  • Mercury 125 DFI 1.5L 3-cylinder
  • Mercury 110 Jet DFI 2.5L
  • Mercury V135 DFI 2.5L - serial 0T801000 to 1B226999
  • Mercury V135 DFI 2.5L - serial 1B227000 to 1B417701
  • Mercury V135 DFI 2.5L - serial 1B417702 and above
  • Mercury V150 DFI 2.5L - serial 0T801000 to 1B226999
  • Mercury V150 DFI 2.5L - serial 1B227000 to 1B417701
  • Mercury V150 DFI 2.5L - serial 1B417702 and above
  • Mercury V175 DFI 2.5L - serial 0T801000 to 1B226999
  • Mercury V175 DFI 2.5L - serial 1B227000 to 1B417701
  • Mercury V175 DFI 2.5L - serial 1B417702 and above
  • Mercury 150 Pro XS 2.5L - serial 1B690542 and above
  • Mercury 175 Pro XS 2.5L - serial 1B516339 and above
  • Mercury 200 DFI / OptiMax 3.0L
  • Mercury 200 Pro XS 3.0L
  • Mercury 225 DFI / OptiMax 3.0L
  • Mercury 225 Pro XS 3.0L - serial 1B104549 to 1B426560
  • Mercury 250 DFI / OptiMax 3.0L
  • Mercury 250 Pro XS 3.0L
  • Mercury Racing 200XS DFI
  • Mercury Racing 250XS DFI - serial 0T651945 to 0T818042
  • Mercury Racing 300XS DFI
  • Mercury 200 DFI Sport Jet
  • Mercury 240 EFI / DFI Sport Jet
  • Mercury 250 DFI Sport Jet
  • HP Range: 75HP - 300HP
  • Engine Type: Mercury / Mariner 1.5L, 2.5L and 3.0L DFI / OptiMax
  • Year Range: Approximately 1997-2018, dependent on engine family and serial number

🔌 Function

The seals maintain an airtight and fuel-tight joint around the direct injector. This allows the pressurised air-and-fuel system to deliver the correctly atomised charge into the combustion chamber.

⚠️ Common Signs of Failure

  • Rough idle or cylinder misfire
  • Hard starting or extended cranking
  • Fuel, air or combustion leakage around the injector
  • Carbon staining around the injector bore
  • Injector balance, air-pressure or fuel-pressure faults

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 26-804875 → Supersedes 26-835083
  • 26-835083 earlier OEM air-injector seal reference

OEM / Related Numbers

  • 26-804875
  • 804875
  • 26804875
  • 26-835083
  • 835083
  • 745061277144

Aftermarket / Verified Equivalents

  • Offshore Marine: 61114875
  • MarinePro: Air Injector Seal Kit replacing 804875
  • Replacement injector seal kits referencing 26-804875 / 26-835083

📦 Condition

  • Genuine Quicksilver part
  • Brand new
  • Supplied in original or equivalent packaging

Shipping & Delivery

Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.

Returns & Warranty

14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in new, unused condition for a refund or exchange. Manufacturer warranties apply to new parts. Full details in our Refunds & Returns policy.

Not sure this fits?

Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.

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