There were 2 part numbers for this C34845 was for the 4.2 and C33332 was for the 2.8 so it could be either, all I know is it was fitted along with HIF7 carbs.

Brand: Jaguar
Classic Part: Yes
Manufacturer Part Number: C33332, C34845, TZX1002, AUH317
Country/Region of Manufacture: United Kingdom