Well from my knowledge I'll do a few of the rarer ones...
(RARE)
4x4/Sisley Fuel Tank -- £200+
4x4/Sisley Fuel Tank Filler Pipe -- £150+
141 Door -- £100+
Sisley Inclinometer -- £80
Sisley Hubcap -- £80 (set)
Sisley Seat Belts (branded) -- £100+
4x4/Sisley/CLX Side Trims -- £75 (set)
4x4/Sisley Wheel Set -- £100+ (reconditioned) £40 - £50 (rusted)
4x4/Sisley Interior -- £200+
Sisley Front Bumper with Washers & Bottle -- £70+
4x4/Sisley Bull Bar £150+
4x4 Country Club Branded Tailgate £150+
4x4/Sisley Gearbox & Transfer Box -- £150+
4x4 Tailgate Badge -- £50
Sisley Tailgate Badge -- £70
4x4 Side Trim Badges -- £60 (pair)
Sisley Side Trim Badges -- £80 (pair)
Sisley Grill Badge -- £50+
Sisley Dashboard Speedo Clocks -- £80
4x4/Sisley Parcel Shelf -- £80+
Sisley Steering Wheel (complete) -- £80+
(GETTING RARER)
141 Bonnet -- £50+
141 Tailgate -- £50+
141 4x2 Steel Wheel Set -- £100 (recondioned) £40 - £50 (rusted)
141 Head Light Switch -- £40+
141 Tailgate Spoiler -- £50+
141 Headlight -- £50+ (intact)
141 Grill (1st generation) -- £50
141 Grill (2nd generation) -- £40
4x4/Sisley Propeller Shaft -- £100+ (reconditioned) £60 (original)
141 Fire Engine (no ancillaries) -- £30 - £40 (over 100k) £50+ (less than 50k)
141 Dashboard Plastics £50+
141 Steering Rack -- £50+
141 Gear Linkage -- £50+ (reconditioned)
141 Hubcaps -- £50 (set)
141 Wheel Trims -- £40+ (set)
141 Bumpers -- £30 (each)
141 Rear Lights (UK) -- £60 (pair)
CLX Steering Wheel (complete) -- £70
141 Carpet (model & condition dependant) £30 - £100
Feel free to quote and edit or carry on this list..