9-33301 Aftermarket Mercruiser Fuel Injector Seal Kit 4.3L, 5.0L, 350 Mag | Sawley’s Select Marine Parts

🔧 Product Description

Sawley's Select Marine Parts Aftermarket MerCruiser Fuel Injector Seal Kit - Part Number: 9-33301

A new aftermarket replacement fuel injector seal kit for MerCruiser MPI engines using the 885176 / 9-33102 injector family. This kit is used with 4.3L MPI, 5.0L MPI, 350 Mag MPI and MX 6.2L MPI ECM 555 fuel systems where the injector seal diagram specifies 9-33301 / 25-892609.

⚙️ Key Features

• Sawley's Select Marine Parts aftermarket injector seal kit

• Replaces Mallory 9-33301

• Replaces Mercury / MerCruiser 25-892609 style seal kit reference

• Used with MerCruiser injector 885176 / 9-33102 family

• Contains upper and lower seals for one injector in common service listings

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 25-892609 Mercury / MerCruiser fuel injector seal kit reference

• 9-33301 Mallory fuel injector seal kit reference

• REC9-33301 Recmar aftermarket seal kit reference

OEM / Related Numbers:

• 9-33301

• 933301

• REC9-33301

• 25-892609

• 892609

• 885176 related fuel injector

• 12567905 related fuel injector

• 9-33102 related Mallory injector

• 18-7688 related Sierra injector reference

• 18-7695 related Sierra seal kit reference

• Fuel injector seal kit

• Injector O-ring kit

• MPI injector seal kit

Aftermarket / Verified Equivalents:

• Recmar: REC9-33301

• Sierra: 18-7695

• Mallory: 9-33301

• Pro Marine / aftermarket replacement for 25-892609

• Replacement seal kit for MerCruiser injector 885176 / 9-33102

🚤 Compatibility

Commonly used on:

• MerCruiser ECM 555 MPI fuel injector systems using injector 885176

Typically suits:

• Engine models:

• MerCruiser MCM 4.3L MPI - serial 0M300000 to 1A063239

• MerCruiser 4.3L MPI ECM 555 applications using injector 885176

• MerCruiser MCM 5.0L MPI with ECM 555 - serial 0M300000 to 1A064824

• MerCruiser MCM 5.7L MPI with ECM 555 - serial 0M300000 to 1A064824

• MerCruiser 350 MAG MPI with ECM 555 - serial 0M300000 to 1A064824

• MerCruiser MX 6.2L MPI Horizon 377 V8 - 2002-2004, serial 0M300000 to 0W059999

• MerCruiser MX 6.2L MPI Horizon 377 V8 - 2004-2009, serial 0W060000 and up

• MerCruiser MX 6.2L MPI Horizon DTS 377 V8 - 2005-2009, serial 0W310000 and up

• MerCruiser MX 6.2L MPI Horizon MIE 377 V8 - 2002-2004, serial 0M300000 to 0M398394

• MerCruiser MX 6.2L MPI Horizon MIE 377 V8 - 2004-2009, serial 0M398395 and up

• MerCruiser MX 6.2L MPI Horizon MIE DTS 377 V8 - 2005-2009, serial 0W390000 and up

• MerCruiser MX 6.2L MPI MIE 377 V8 - 2002-2004, serial 0M300000 to 0M398394

• MerCruiser MX 6.2L MPI MIE 377 V8 - 2004-2009, serial 0M398395 and up

• MerCruiser MX 6.2L MPI MIE DTS 377 V8 - 2005-2009, serial 0W390000 and up

• MerCruiser MX 6.2L MPI Ski 377 V8 - 2002-2009, serial 0M317000 and up

• HP Range: engine-variant dependent

• Engine Type: MerCruiser GM petrol MPI fuel injector sealing system

• Year Range: approximately 2000 onward for ECM 555 applications; exact range is serial controlled

• Serial Note: Match by exact MerCruiser serial number, injector part number, fuel rail and injector O-ring groove style before installation.

🔌 Function

The fuel injector seal kit seals the injector into the fuel rail and intake manifold, helping prevent fuel leaks, vacuum leaks and poor spray control.

Common signs replacement is needed:

• Fuel smell around fuel rail

• Fuel leakage near injector body

• Rough idle after injector service

• Hard starting after injector removal

• O-rings flattened, cracked or swollen

• Vacuum leak around injector seat

• Injector removed and seals need replacement

• Fuel rail leak stops after new injector seals are fitted

📦 Condition

• Aftermarket replacement part

• Brand new

• Supplied in original or equivalent packaging