TOYOTA 11176-27011 Injection Nozzle Seat

The genuine Toyota 11176-27011 injection nozzle seat (injector sealing washer / fuel injector seat seal) is an essential component for the precise and reliable operation of diesel engines. This heat-resistant sealing ring sits directly between the cylinder head and the injector nozzle tip, where it is subjected to critical mechanical and thermal stresses.

Function and Technical Importance:

• Combustion Chamber Seal: Prevents high-pressure, hot combustion gases from leaking or blowing by into the injector well.
• Heat Dissipation: Plays a vital role in effectively dissipating heat from the injection nozzle to the cylinder head, protecting the fuel injector from overheating and premature failure.
• Symptoms of Wear: When the seal ages or burns through, combustion byproducts and carbon build up around the injector seat, a distinct hissing sound can be heard while the engine is running, and symptoms such as compression loss, increased fuel consumption, rough idling, and hard starting may occur. If an injector is removed, re-using the nozzle seat is strictly prohibited; it must be replaced each time.

Technical Specifications:

• Part Name: Injection nozzle seat (Seal washer)
• Installation Position: Between the cylinder head and injection nozzle
• Design: High temperature and pressure-resistant deformable sealing surface (single-use seal)
• OEM Reference / Supersessions: 11176-27011, 1117627010
• Manufacturer: TOYOTA OEM

Compatible Vehicle Models:

• Toyota Avensis (T220) 2.0 D-4D [1999 - 2003] (1CDFTV)
• Toyota Avensis (T250) 2.0 D-4D [2003 - 2006] (1CDFTV)
• Toyota Avensis Verso / Picnic (XM20) 2.0 D-4D [2001 - 2005] (1CDFTV)
• Toyota Coaster (B40/B50) 4.1 D [2000 - 2015] (15BF)
• Toyota Coaster (B40/B50) 4.2 TD [2000 - 2004] (1HDFT)
• Toyota Corolla (E110) 2.0 D-4D [2000 - 2001] (1CDFTV)
• Toyota Corolla (E120) 2.0 D-4D [2001 - ...] (1CDFTV)
• Toyota Corolla Verso (E110/E120) 2.0 D-4D [2001 - 2004] (1CDFTV)
• Toyota Corolla Verso (E120/E130) 2.0 D-4D [2004 - 2005] (1CDFTV)
• Toyota Dyna / Toyoace (U100/U200/Y100) [2000 - ...]
• Toyota Dyna / Toyoace (U300/U400/Y200) 4.1 TD [2000 - 2007] (15BFTE)
• Toyota Land Cruiser 100 (J100) 4.2 TD [2000 - ...] (HDJ100, 1HDFTE)
• Toyota Land Cruiser 70 (J70) 4.2 TD [2001 - 2007] (HDJ70, 1HDFTE)
• Toyota Land Cruiser 80 (J80) 4.2 TD [2000 - 2001] (HDJ80, 1HDT)
• Toyota Mega Cruiser (BXD20) 4.1 TD [2000 - ...] (15BFT)
• Toyota Previa / Tarago (ACR30) 2.0 D-4D [2001 - ...] (1CDFTV)
• Toyota RAV4 (XA20) 2.0 D-4D [2001 - ...] (1CDFTV)