The horsepower rating dropped from 265bhp to 245bhp at an unchanged 5400rpm.

The engine’s redline was increased from 5000rpm to 5500rpm.

Elsewhere, Jaguar fitted a revised differential ratio (3.54:1 instead of 3.07:1), re-ordered the centre console gauges, used a black instead of chrome horn button bezel, hex nuts instead of double-eared wheel spinners, all-clear indicator lenses up front (instead of clear / amber) and all red tail lights out back (as opposed to red / amber).

Later Production Changes

From engine number 7E16116, rest of world market cars adopted the same ribbed cam covers as the USA version.

End of Production

Series 1.5 production came to an end in July 1968 when the Series 2 took over.

Jaguar built 12,583 examples of the 4.2-litre Series 1 between October 1964 and July 1967 split as follows:

863 right-hand drive Series 1 4.2 OTS (starting at VIN 1E1001)
5888 left-hand drive Series 1 4.2 OTS (starting at VIN 1E10001)
1583 right-hand drive Series 1 4.2 FHC (starting at VIN 1E20001)
4249 left-hand drive Series 1 4.2 FHC (starting at VIN 1E30001)

A further 8591 examples of the 4.2 Series 1.5 followed between August 1967 and July 1968 split as follows:

319 right-hand drive Series 1.5 4.2 OTS (starting at VIN 1E1864)
2478 left-hand drive Series 1.5 4.2 OTS (starting at VIN 1E15889)
4230 right-hand drive Series 1.5 4.2 FHC (starting at VIN 1E21584)
1564 left-hand drive Series 1.5 4.2 FHC (starting at VIN 1E34250)

Text copyright: Supercar Nostalgia
Photo copyright: Jaguar – https://www.jaguar.com