Most US-delivered Jaguars use the Salisbury differential, but during the 1984-87 timeframe a number of XJ-S vehicles were built with “Dana” diffs (and the Dana diff seemingly was used in other models in Europe).

1. SALISBURY
OR DANA:
WHICH DIFF
DO I HAVE?

2. STANDARD SALISBURY
DIFFERENTIAL:
Bottom of diff: Note the drain plug and non-flat bottom.
1
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3. 2
Pinion flange: Circular
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4. DANA STYLE DIFFERENTIAL:
1
Bottom of diff: Note the drain plug and the completely-
flat bottom
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5. Pinion flange: “Square”
2

6. Salisbury Differential Rebuild Kit
Most US-delivered Jaguars use
the Salisbury differential, but
during the 1984-87 timeframe a
number of XJ-S vehicles were built
with “Dana” diffs (and the Dana
diff seemingly was used in other
models in Europe). Why is this
important? Because the cars
equipped with Dana diffs use
different rear brake rotors due to
the fact that the rear brake
calipers mount to the differential in
a slightly different way