Hi
I compliled this list of Throttle Body Part numbers, Prices and sources.

From Jagbits website

C2A1444 $2250.00
1999-2003 XJ8 FROM VIN 853936
1999-2003 XK8 FROM VIN 031303 TO VIN A30644

C2A1445 $2000.00
2000-2003 XJR FROM VIN F00035 ON
2000-2003 XKR FROM VIN A00083 THRU A30644.

C2A1470-OE $750.00
1998-1999 XJ8 UP TO VIN 853935
1997-1999 XK8 UP TO VIN 031302

From Motorcars LTD website

C2A1444 $2475.00
XJ8 99-03 XK8 99-02

C2A1445 not listed

C2A1470 $2475.00
AJ26 XJ8 XK8 97-98

From Gaudin Jaguar Parts Website

C2A1444 $1828.12 (revised 10/2012 $1889)
xj, xk, coupe, convertible, 4.0l, 8 cylinder, w/o supercharger 2000 – 2002

C2A1445 $1706.25 (price not changed 10/2012)
xj, xk, coupe, convertible, 4.0l, 8 cylinder, w/supercharger 2000 – 2002

C2A1470EK $342.50 Update price online error (revised 10/2012 $1189)
xj, xk, coupe, convertible, 4.0l, 8 cylinder 1997 – 1999
xj, xk, sedan, 4.0l, w/o supercharger 1998
xj, xk, sedan, 4.0l, w/supercharger 1998 – 1999
?????? xj, xk, sedan, 4.0l, all 2001 – 2003

EBAY
C2A1470-EK $695 plus $25 shipping (new)
1998-1999 XJ8 UP TO VIN 853935
1997-1999 XK8 UP TO VIN 031302

Craigs List
C2A1470 $100.00 (used) removed from car with 55000 miles

Throttle Body Rebuilders
EBAY storefront - http://www.ebay.com/itm/XK-STYPE-XJ-JAGUAR-THROTTLE-BODY-REBUILD-/380322600685?pt=Motors_Car_Truck_Parts_Accessories &vxp=mtr&hash=item588cfe56ed
Company is:
Automotive Scientfic Inc (ASI) Rogersville,Tn $325
1999 – 2003 Jaguar XJ8, 1999 – 2002 XK8, 1997 – 1998 XK8, 1998 XJ8, 2000 – 2005 S type, 2002 – 2004 X type
YOU SHIP YOUR PART TO US, WE REBUILD YOUR PART, YOU ARE NOT PURCHASING A PART
includes our lifetime warranty with each rebuild service. Price is $325 free shipping

Update - 10/12/2012 - No longer offered (apparently because I could not find it there) Ebay – jaguarparts specialist com
Jaguar XJ8 99-03 Throttle Body Assembly Rebuilt $475 plus $14.95 shipping plus core chage $350. There is a 30 days warranty

Jim Lombardi

 

Thanks , I will add this FAQ