CAYB Diesel Injectors
Compatible with Audi A1, Audi A3, Seat Altea, and 8 more
- OEM Tested & Calibrated
- 12-Month Warranty
- Free UK Delivery
Select the correct injector for your CAYB engine below
Fits Audi A1, Audi A3, Seat Altea, Seat Ibiza and more
Top injectors for CAYB
Compatible Injectors for CAYB
- OEM Tested
- 12-Month Warranty
- Free UK Delivery
Common problems solved by these injectors
About the CAYB engine
The CAYB is a lower-output variant of the Volkswagen Group 1.6-litre TDI engine family, producing 90 PS (66 kW) and 230 Nm of torque. Sharing the same Siemens VDO common rail injection system as the CAYC, this engine was primarily fitted to vehicles where a more economical power output was preferred. The CAYB uses identical injectors to the CAYC (part number A2C9626040080) and is commonly found…
Vehicles Using CAYB Engine
| Vehicle | Engine | Years |
|---|---|---|
| Audi A1 injector | 1.6 TDI | 2010–2015 |
| Audi A3 injector | 1.6 TDI | 2009–2013 |
| Seat Altea injector | 1.6 TDI | 2009–2015 |
| Seat Ibiza injector | 1.6 TDI | 2009–2015 |
| Seat Leon injector | 1.6 TDI | 2010–2012 |
| Skoda Fabia injector | 1.6 TDI | 2010–2014 |
| Skoda Rapid injector | 1.6 TDI | 2012–2019 |
| Skoda Roomster injector | 1.6 TDI | 2010–2015 |
Common CAYB Injector Problems
Rough idle and engine vibration
Worn injector nozzles cause uneven fuel spray, leading to rough idle at low RPM. Most noticeable when the engine is cold.
Excessive exhaust smoke
Black or blue-grey smoke on acceleration indicates poor fuel atomisation. This is often caused by carbon buildup on the injector nozzle tip.
Poor fuel economy
A worn or leaking injector delivers incorrect fuel quantities, reducing efficiency by 10–20% in severe cases.
Engine misfire under load
Intermittent misfires during acceleration suggest one or more injectors are failing to deliver the correct fuel pressure.
Difficult cold starting
Degraded injector nozzles struggle to atomise fuel at lower cranking pressures, causing extended crank times in cold weather.
Loss of power
Gradual power loss across the rev range, particularly above 2500 RPM, can indicate injector flow rate degradation.
Increased diesel knock
Louder than normal combustion noise, especially at idle, can indicate incorrect injection timing due to worn injector internals.
CAYB Technical Specifications
Displacement
1598 cc
Power
66 kW (90 PS)
Torque
230 Nm
Fuel System
Common Rail Direct Injection
The CAYB is a lower-output variant of the Volkswagen Group 1.6-litre TDI engine family, producing 90 PS (66 kW) and 230 Nm of torque. Sharing the same Siemens VDO common rail injection system as the CAYC, this engine was primarily fitted to vehicles where a more economical power output was preferred. The CAYB uses identical injectors to the CAYC (part number A2C9626040080) and is commonly found in the Volkswagen Golf, Polo, Audi A1, A3, Skoda Fabia, Rapid, Roomster, and Seat Ibiza. Injector problems on the CAYB are identical to the CAYC, with common issues including rough idle, excessive smoke, and poor fuel economy after 100,000 miles.
Engine Intelligence
Fitment note: Always confirm compatibility using registration lookup or part number before ordering.
Related CAYB Engine Guides
Related Pages
Siemens VDO 1.6L TDI — browse compatible engines, vehicles, and injectors
Compatible Engines
Compatible Vehicles
Recommended Injector
A2C9626040080
Siemens VDO — View product page