Differential & Powrlok Axle Rebuilds

AJS Engineering Services was formed nearly 39 years ago in 1980 as an engineering and design consultancy concentrating in the mechanical and manufacturing sector of the industry. As the proprietor of the business, I have always maintained a practical approach to engineering issues via my interests in classic sports cars and transportation, particularly Jaguars which I first became involved with back in 1965. The business quickly and inevitably turned into an automotive engineering company.

Our Picture Gallery shows examples of cars restored and some work undertaken since 1989 and over the last 15 years, we have concentrated on Jaguar Axles and Jaguar Differentials with the occasional 6 cylinder E type and XK engine thrown in for good measure.

We are able to rebuild all Salisbury axles and Salisbury Differentials, including Thornton Powrlok units as fitted to Jaguars and other marques since 1955 and right through to modern Jaguars such as the Jaguar XJ8 and Jaguar XK8. Services provided include full axle unit rebuilds or just differentials. Axles rebuilt include examples from Aston Martin, Iso Grifo, Sunbeam Tiger, Scimitars. Shotblasting and Electroplating services are also available.

If you need a rebuild or just a bit of friendly advice please email us. We cannot guarantee to get back to you within 24 hours because we concentrate on the physical work in hand and try to turn around the units as quickly as possible (a 24-hour turnaround can be achieved). However, we will respond to your query within three days at the latest.


Jaguar XK140 – Jaguar XK150 – Jaguar Mk8 – Jaguar Mk9 – Jaguar Mk10 Jaguar Mk2 – Jaguar 240 – Jaguar 340 – Jaguar 420 – Jaguar 420G – Jaguar S Type – Jaguar E Type Series 1 – Jaguar E Type Series 2 – Jaguar E Type Series 3 – Jaguar XJ6 Series 1 – Jaguar XJ6 Series 2 – Jaguar XJC – Jaguar XJ12 – Jaguar XJS – Jaguar XJ40 – Jaguar X300 – Jaguar XJ8 (X308) – Jaguar XK8 – New S ‘Type

Aston Martin

Aston Martin DB4 – Aston Martin DB6 – Aston Martin DB7 – Aston Martin DBS

The Famous Few

Facel Vega II – Gordon Keeble
Jenson Interceptor – Jenson FF
Iso Grifo Bizzararini – Iso Grifo Rivolta
Sunbeam Tiger
Daimler Double Six – Daimler Sovereign – Daimler DS420 Limosine