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Febi
febiFebi 40723 Radiator Cap
| Brand | Febi 40723 |
|---|---|
| Filler Neck Height | 40.0 |
| Colour | Blue |
| Length (mm) | 87.0 |
| Opening Pressure (Bar) | 1.5 |
| Product line | febi |
| Fits | Audi · 63 vehicles |
OE-style fit. Radiator cap engineered for straightforward replacement.
Blue finish. Distinctive color adds a clean, easy-to-identify look.
1.5 bar pressure. Helps maintain the cooling system's operating pressure.
Cross-references 8E0 121 321 for the same application. See all 1.
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Radiator Cap for Audi Cooling Systems
This Febi radiator cap is a direct-fit cooling system service part for select Audi models that use a blue cap with a 1.5 bar opening pressure. Febi part number 40723 is specified for reservoir-position applications and matches OE-style fitment requirements for Audi A4, A6, A8, S4, S6, S8, and Allroad Quattro models.
Key Features
- Febi radiator cap, part number 40723
- Opening pressure: 1.5 bar
- Blue cap finish
- Length: 87.0 mm
- Filler neck height: 40.0 mm
- Fits reservoir-position cooling system applications where specified
- Cross-reference: 8E0 121 321
Fitment Details
- Fits 2012 Audi A6 Quattro, reservoir position; febi.
- Fits 2012 Audi A7 Quattro, reservoir position; febi.
- Fits 2006-2011 Audi A6, length 1 (mm): 87; height or thickness 1 (mm): 40; colour: blue.
- Fits 2002-2004 Audi A6, length 1 (mm): 87; height or thickness 1 (mm): 40; colour: blue.
- Fits 2000-2011 Audi A6 Quattro, length 1 (mm): 87; height or thickness 1 (mm): 40; colour: blue.
- Fits 2007-2011 Audi S6, length 1 (mm): 87; height or thickness 1 (mm): 40; colour: blue.
- Fits 2004-2010 Audi A8 Quattro, length 1 (mm): 87; height or thickness 1 (mm): 40; colour: blue.
- Fits 2010 Audi S8, opening pressure: 1.5; febi.
- Fits 2004-2009 Audi S4, opening pressure: 1.5; febi.
- Fits 2007-2009 Audi S8, length 1 (mm): 87; height or thickness 1 (mm): 40; colour: blue.
- Fits 2002-2006 Audi A4, length 1 (mm): 87; height or thickness 1 (mm): 40; colour: blue.
- Fits 2002-2006 Audi A4 Quattro, length 1 (mm): 87; height or thickness 1 (mm): 40; colour: blue.
- Fits 2005 Audi A6, opening pressure: 1.5; febi.
- Fits 2003-2005 Audi Allroad Quattro, length 1 (mm): 87; height or thickness 1 (mm): 40; colour: blue.
- Fits 2002-2003 Audi A8 Quattro, opening pressure: 1.5; febi.
- Fits 2002 Audi Allroad Quattro, reservoir position; febi.
- Fits 2001 Audi A4 Quattro, opening pressure: 1.5; febi.
What This Part Helps Address
- Cooling system pressure loss from a worn or weak cap
- Coolant overflow caused by incorrect pressure regulation
- Reservoir cap sealing issues on Audi cooling systems
- Fitment problems when replacing an OE-style blue cap
- Service replacement needs for Audi A4, A6, A8, S4, S6, and S8 models
Installation Notes and Tips
Verify the filler neck height, cap length, and opening pressure before installation. This Febi 40723 radiator cap is specified for 1.5 bar applications and should be matched to the vehicle’s reservoir or cooling system specification. Confirm the OE reference 8E0 121 321 and compare the existing cap’s blue color and dimensions for proper fitment on Audi A4, A6, A8, S4, S6, S8, and Allroad Quattro applications.
Quality Assurance
Febi supplies OE-style replacement parts for European vehicles, and this radiator cap is built to meet the listed dimensional and pressure specifications for the stated Audi applications.
This part fits 63 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2012 | Audi | A6 Quattro | — | — | N/A | Reservoir Position; febi |
| 2012 | Audi | A7 Quattro | — | — | N/A | Reservoir Position; febi |
| 2011 | Audi | A6 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2011 | Audi | A6 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2011 | Audi | S6 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2010 | Audi | A6 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2010 | Audi | A6 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2010 | Audi | A8 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2010 | Audi | S6 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2010 | Audi | S8 | — | — | N/A | Opening Pressure: 1.5; febi |
| 2009 | Audi | A6 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2009 | Audi | A6 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2009 | Audi | A8 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2009 | Audi | S4 | — | — | N/A | Opening Pressure: 1.5; febi |
| 2009 | Audi | S6 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2009 | Audi | S8 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2008 | Audi | A6 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2008 | Audi | A6 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2008 | Audi | A8 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2008 | Audi | S4 | — | — | N/A | Opening Pressure: 1.5; febi |
| 2008 | Audi | S6 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2008 | Audi | S8 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2007 | Audi | A6 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2007 | Audi | A6 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2007 | Audi | A8 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2007 | Audi | S4 | — | — | N/A | Opening Pressure: 1.5; febi |
| 2007 | Audi | S6 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2007 | Audi | S8 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2006 | Audi | A4 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2006 | Audi | A4 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2006 | Audi | A6 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2006 | Audi | A6 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2006 | Audi | A8 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2006 | Audi | S4 | — | — | N/A | Opening Pressure: 1.5; febi |
| 2005 | Audi | A4 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2005 | Audi | A4 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2005 | Audi | A6 | — | — | N/A | Opening Pressure: 1.5; febi |
| 2005 | Audi | A6 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2005 | Audi | A8 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2005 | Audi | Allroad Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2005 | Audi | S4 | — | — | N/A | Opening Pressure: 1.5; febi |
| 2004 | Audi | A4 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2004 | Audi | A4 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2004 | Audi | A6 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2004 | Audi | A6 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2004 | Audi | A8 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2004 | Audi | Allroad Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2004 | Audi | S4 | — | — | N/A | Opening Pressure: 1.5; febi |
| 2003 | Audi | A4 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2003 | Audi | A4 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2003 | Audi | A6 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2003 | Audi | A6 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2003 | Audi | A8 Quattro | — | — | N/A | Opening Pressure: 1.5; febi |
| 2003 | Audi | Allroad Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2002 | Audi | A4 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2002 | Audi | A4 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2002 | Audi | A6 | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2002 | Audi | A6 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2002 | Audi | A8 Quattro | — | — | N/A | Opening Pressure: 1.5; febi |
| 2002 | Audi | Allroad Quattro | — | — | N/A | Reservoir Position; febi |
| 2001 | Audi | A4 Quattro | 1.8L | L4 | N/A | Opening Pressure: 1.5; febi |
| 2001 | Audi | A6 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| 2000 | Audi | A6 Quattro | — | — | N/A | Length 1 (mm): 87; Height or Thickness 1 (mm): 40; Colour: blue |
| No rows match your filter. | ||||||
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
8E0 121 321