This is for later cars from 2001 to 2006. The best way to identify what cable you have it to ensure it fits within the chassis number range below Specialist in second hand spares and performance parts for Jaguars.
JAGUAR XK8 XKR X100 FUEL VAPOR CHARCOAL CARBON CANISTER UNIT EMMISIONS ENGINE
Jaguar XK8 XKR X100 R/H Front Floor Repair
for Jaguar XK8 XKR X100 1996-2006 Left Hand Rear Lower Outer Sill Repair Panel
for Jaguar XK8 XKR X100 1996-2006 Left Hand Front Lower Outer Sill Repair Panel
Jaguar XK8 XKR X100 (96-05) L/H Rear Sill End Repair/ Rear Wing Lower Panel