• Jaguar XK120 OTS

Jaguar XK120 OTS

XK = engine (X-experimental/K-type series)
120 = maximum speed
SE = "Special Equipment" (optional)
M = "Modified" - "Special Equipment" only USA (optional)
OTS = Open Two Seater

Construction period July 1949 to September 1954
In April / May 1950 changeover from aluminium to all-steel body
basis price £ 998

7611 vehicles built, 240 with aluminum body
1175 vehicles with right hand drive (RHD)
6735 vehicles with left hand drive (LHD)

Chassis Numbers

vehicles with right hand drive (RHD) and aluminum body: 660001 to 660058
vehicles with right hand drive (RHD) and all-steel body: 660059 to 661176
vehicles with left hand drive (LHD) and aluminum body: 670001 to 670184
vehicles with left hand drive (LHD) and all-steel body: 670185 to 676438

chassis numbers with a prefixed "S": "Special Equipment"

Engineering Changes

August 1950

(from OTS Model 660126 and 670439)

Castor angle now 3o positive instead of 5o. Air cleaner standard.

November 1951

(from OTS Model 660675 and 671097)

Footwell ventilators fitted to front wing sides.

(from OTS Model 660911 and 671493)

Air conditioning (without demist and defrost) now standard.

February 1952

(from OTS Model 660935 and 671797)

Short main shaft gearbox without rear extention, longer prop shaft and speedo cable fitted

(from OTS Model 660935 and 671797)

Salisbury 2HA axle 3,77:1 fitted to certain cars

April 1952

(from OTS Model 660980 and 672049)

Self-adjusting front brakes, tandem master-cylinder with splitted fluit container and new brake adjuster fitted

June 1952

(from OTS Model 660980 and 672049)

New revised Newton telescope shock absorbers mounted on the front axles, with 54 instead of 70 mm diameter.

(from OTS Model 660986 and 672280)

New revised Girling shock absorbers mounted on the rear axles.

October 1952

(from OTS Model 661025 and 672963)

Sidelamp housings now incorporated in wings and cars for export wired for flashing indicators (using existing lamp units).

(from OTS Model 661026 and 672963)

Demister vents now fitted at base of windscreen and connected to heater by flexible hoses. (previously only fitted on Fixed Head Coupé)

December 1952

(from OTS Model 661040 and 673320)

Stiffer Rear Springs (C.5721) of the "Special Equipment" (SE) version fitted standard. Vehicle parts are now painted with synthetic enamel. A tin of fast-drying synthetic enamel now belongs to equipment.

(from OTS Model 661037 and 673009 + 661026, 661028, 661029)

Trico vacuum-operated windscreen washer fitted.

(from OTS Model 661040 and 673320)

Rim width of the steel rims wheels to 5.5 inches larger.

January 1953

(from OTS Model 661046 and 673396)

Zipping-type hood rear-view panel fitted. Detachable plate fitted on right-hand side of gearbox cover to allow easy access to front universal join and spline nipples.

April 1953

(from OTS Model 661054 and 673693 (or 673695))

Salisbury 4HA 3,54:1 axle fitted instead 2HA 3,77:1.

June 1953

(from OTS Model 661075 and 673995)

new rev. counter cable fitted

(from OTS Model 661078 and 674006)

new speedo cable fitted

January 1954

(from OTS Model 661151 and 674415)

cigar lighter from the MK II Saloon (C.5631) fitted.

September 1954

(from OTS Model 661165 (not 661166-661169) and 674929(not 661166-661169))

rev. counter cable now completely black polythene outer sleeve

(from OTS Model 661170 and 675763)

handbrake lever modified

(from OTS Model 661172 and 675926)

steering column changed and replaced dome-type horn-push (C.4514) against flat-type horn-push (C.5558).



inline 6 cylinder 4 stroke


two overhead camshafts (DOHC), which are driven via chain


valve angle 70o, overhead valves

bore x stroke

83 x 106 mm


3442 cc


160 bhp at 5000 rpm
180 bhp at 5000 rpm at SE

maximum torque

195 lb ft at 2500 rpm
203 lb ft at 4000 rpm at SE

compression ratio





front: drum brakes
rear: drum brakes


4 speed manual, as off second speed synchronized, transfer over prop shaft to the rear axle

wheel suspension

front: wishbone with torsion bar springs and hydraulic shock absorbers
rear: rigid axle with flat springs and hydraulic lever shock absorbers


at first complete aluminum body,later all-steel body with aluminum doors and bonnet


8 ft 6 in


14 ft 6 in


5 ft 1,5 in


4 ft 4,5 in

maximum speed

120 mph

acceleration 0–60 mph

12.0 sec

dry weight

24 cwt. l.

kerb weight

26 cwt. l.