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Febi 40723 Radiator Cap
Reliable Radiator Cap for Audi Cooling Systems
The febi 40723 radiator cap is designed to maintain optimal pressure in the cooling system of various Audi models. Engineered with precision, this blue radiator cap ensures consistent performance and helps protect your engine from overheating.
- Opening pressure: 1.5 bar for accurate pressure regulation
- Filler neck height: 40.0 mm for proper fitment
- Length: 87.0 mm to match OEM specifications
- Distinctive blue color for easy identification
- Compatible with multiple Audi models including A4, A6, A7 Quattro, and S8
Detailed Product Features and febi Brand Line
The febi brand line is known for delivering high-quality automotive components that meet or exceed OEM standards. This radiator cap, part number 40723, is part of febi's commitment to providing reliable cooling system parts. The cap’s 1.5 bar opening pressure is calibrated to maintain the correct pressure in the radiator, preventing coolant loss and overheating. Its 40.0 mm filler neck height and 87.0 mm length ensure a secure and precise fit on compatible Audi vehicles, including the A4 Quattro, A6 Quattro, Allroad Quattro, and performance models like the S4 and S6.
Applications and Common Issues Addressed
- Prevents coolant leakage by maintaining proper system pressure
- Helps avoid engine overheating caused by pressure loss
- Ensures consistent coolant flow and system efficiency
- Replaces worn or damaged radiator caps in Audi A4, A6, A7 Quattro, and S8 models
- Supports cooling system integrity in both standard and Quattro variants
Installation Notes and Tips
When installing the febi 40723 radiator cap, ensure the cooling system is cool to avoid injury. Verify that the filler neck height and length match your vehicle’s specifications for a secure fit. Replace any damaged or worn seals to maintain system pressure. Regular inspection of the radiator cap can prevent unexpected cooling system failures.
Quality Assurance and Warranty
Manufactured under strict quality control, the febi 40723 radiator cap meets industry standards for durability and performance. febi products are engineered to provide reliable service life in demanding automotive environments. Please refer to febi’s warranty policy for specific coverage details.
| Brand | Febi |
| Part Number | 40723 |
| Position | febi |
| Filler Neck Height | 40.0 |
| Colour | Blue |
| Length (mm) | 87.0 |
| Opening Pressure (Bar) | 1.5 |
This part fits 63 vehicles. Search below:
| 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 |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.