Nut/Bolt Sizes

1990 XJ-S and 1991 XJ-S Classic Collection Coupes (US Spec, 5.3L V12)

 

Below is my listing of sizes of nuts and bolts that I have removed/reinstalled.  Note that not every one applies to all cars of my vintage or is necessarily correct - what is listed as metric may in fact be the nearest SAE size and vise-versa.  I have a printout of this list hanging near my cars for quick reference…

 

NUT/BOLT

SIZE

ABS Accumulator Ball

5/16" Hex

A/C Compressor - Front Bracket

1/2"

A/C Compressor - Rear Bottom

17mm

A/C Compressor - Bracket to Valley Cover

1/2"

Air Cleaner Housing (to Throttle)

1/2"

Air Pump Adjustment Nuts

9/16"

Air Rail Clamps

T40

Air Rail to Exhaust Manifold

1/2"

Auxiliary Air Valve (AAV)

T27 Torx

Bonnet Struts

1/2"

Camshaft Cover Bolts

10mm

Camshaft Cover Nuts

1/2"

Cruise Control Bellows Bracket

7/16"

Cruise Control Bellows to Cable

3/16"

Engine Breather Housing

10mm

Fuel Rail Injector Clamp Downs (24)

7/16"

Fuel Rail Supply/Return

11/16"

Hose Clamps

6mm

Idle Adjustment "Screw"

13mm

Ignition Coil - Top to bracket

9/32"

Intake Manifolds

1/2"

Oil Banjo Bolts

5/8"

Oil Pressure Sender

7/16" or 15/16"

Oil Pressure Switch

18mm or 19mm

Radiator Banjo Bolt

5/8"

Radiator Bleed Bolt

7/16"

Throttle Pedestal

7/16"

 

Questions/comments: Email me.