[xk] XK120 Grommet list - for your verification

XK
1

Inspired by recent posts on xk120 grommets, I decided to
compile a fairly comprehensive list of grommets for the XK120.
This research is based on:

  • xk120 Anatomy books
  • Original Jaguar XK Porter book
  • Bill Bassets grommet list
  • Autosparks grommet list
  • Lucas Equipment Specifications and spare parts master
    catalogue
  • my xk120 OTS Dec '53

Please note:

  • Dimensions specified by grommet part numbers are grommet
    dimensions
  • OD dimension specified at grommet location is the sheet metal
    hole in my xk120
  • GR## or R## signifies Bassets PN
  • PN# signifies Jaguar PN
  • Lucas: ### signifies Lucas PN
  • AS: ### signifies Autosparks PN
  • Grommet shape:
    o SB � ‘‘Semi Blind’’ Centre grommet
    o D � Donut shaped grommet
    o FD � �flat� donut shaped (Internal diameter at right
    angle, outside round)
    o S - Special

GROMMET D PN# C.2784?, Lucas:199001 GR18

  • 1 License plate lamp grommet OD=10mm
  • 1 on top of license plate panel for wiring. OD=11.5mm

GROMMET D PN# C.974, Lucas:858062, AS:C551, GR1 � OD: 1/2�
ID:1/4�

  • 2 in frame for reverse light switch, OD=18mm
  • 1 in trunk Iid for reverse and license light harness,
    OD=16mm
  • 2 in frame bracket for fuel pump mounting. OD??mm
  • 2 for windshield washer water tube through the cowl,
    near the demister mounts. OD=12.5mm

GROMMET D PN# C.975 Lucas: 858063, AS:C552, GR2 - OD: 3/4�
ID:1/2�

  • 1 for Fuel pump wire outside of frame, below firewall.
    OD=18mm
  • 1 in Side Frame under Scuttle structure for radio unit
    (OPIONAL, to be verified)

GROMMET D PN# C.976 Lucas:???, AS:C553, GR3 - OD: 1� ID:3/4�

  • 3 for windshield wiper rack cable thru inner cowl
    bracing. OD=25mm
  • 2 for fog lights under the front wing air intake
    (OPIONAL, to be verified)

GROMMET D PN# C.977 Lucas:???, AS:C554?, GR4 - OD: 1 1/4� ID:1�

  • 2 for Forward fender valance on LH side of car for head
    light bucket and turn/side light wire connection OD=28mm
  • 2 for rear bumper studs through body (NB: Parts Manual
    also indicates C.2869)

GROMMET D PN# C.1426, Lucas??, AS:C555, GR6 � OD: 1 1/2� ID:1
1/4�

  • 4 in frame holes for fuel and brake lines OD=37mm
  • 3 inside cowl bracing for cowl harness, OD=37mm

GROMMET D PN# C.3766/1

  • 1 Steering column grommet OD=64mm (OTS only)

GROMMET FD PN# C.1042 AS:C522?, GR5 - OD: 5/16� ID:7/32�

  • Heater fan feed wire in cowl bracing OD=8mm

GROMMET FD PN# BD.3210 AS:C527, GR21 � OD=1/2� ID:5/16�

  • 1 in fuel filler compartment for vent tube. OD=12.7mm
    GROMMET FD GR13
  • 1 in firewall for windshield wiper rack cable. OD=15mm
    (possibly a D type grommet?)
  • 1 fuel filler compartment drain pipe going through
    inner wing OD=approx. 15mm (not sure if originally there…)

GROMMET FD GR19

  • 1 oval grommet for windshield wiper rack housing in
    cowl bracing. OD: 47mm

continued on next post…–
ysmalkie
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2

In reply to a message from ysmalkie sent Mon 8 Dec 2014:

… continued from last post…

GROMMET SB PN# C.2706,Lucas:859059, AS:C502, GR7 � OD: 3/4�
ID:1/8�

  • 3 in sill for body harness and battery cable, OD=18mm
  • 1 in firewall for speedo cable, OD=18mm
  • 1 in trunk forward right hand corner for fuel tank
    branch of the body harness. OD=18mm
  • 1 for windshield washer water tube through the
    firewall, behind the wiper motor. OD=16.5mm

GROMMET SB PN# C.2707, Lucas: 859060, AS:C503, GR8 - OD: 1 1/4�
ID:1/8�

  • 2 for Forward fender valance on RH side of car for head
    light bucket and turn/side light wire connection OD=28mm
  • 1 beside starter solenoid for wiring harness, OD=28mm
  • 1 in firewall for tach cable. OD=27mm
  • 1 in firewall behind wiper motor for cowl harness,
    OD=27mm
  • 1 for windshield washer vacuum tube through the
    firewall. OD=27mm

GROMMET SB PN# C.2708, Lucas: 859061, AS:C509, GR9 - OD: 1 3/8�
ID:1/2�

  • 1 in firewall under voltage regulator, OD=34mm
  • 1 for cowl harness negative battery cable in battery
    box area.

GROMMET SB PN# C.2850, Lucas: 859341, AS:C501 GR10 - OD: 1/2�
ID:1/8�

  • 2 in tops of fenders for side lamps. OD=12mm
  • 1 in firewall for bonnet release cable. OD=10mm

GROMMET S PN# C.4550, Lucas: 690995, R134

  • 2 for Horn Wire through the horn cover

PLUG (2) S Lucas: part of headlamp harness 860895, R27

  • 2 Headlight Bucket Harness

PLUG (1 or 2) S PN# 513, OD=1�

  • 1 Firewall Hole Plug for Oil and Temperature Lines,
    OD=24mm, R28

PLUG (2-3)

  • 1-2 Plug(s) near the hood open cable through the
    firewall. OD=7.25mm (plug like this is visible in XK120 Anatomy
    Vol 2, page 16, photo 2 & page 19, photo 1)
  • 1 plug under the washer bottle. OD=7.25mm.

PLUG (4) PN# GR.1010

  • 4 sill plugs OD=25mm

I am pretty sure of most of them, however I have some doubts
over a few - my comments are inline.

Tadek–
ysmalkie
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3

Tadek;
Great piece of work!!!
Charles #677556.
http://xktx.org----- Original Message -----
From: “ysmalkie” tadeusz.malkiewicz@gmail.com
To: xk@jag-lovers.org
Sent: Monday, December 08, 2014 4:45 PM
Subject: Re: [xk] XK120 Grommet list - for your verification

… continued from last post…

4

That’s really good stuff Tadek - well done.

A similar exercise I am doing for XK140 Grommets is at this stage only 1/2
done, so I will get a big kick along now with your efforts as many XK120
Grommets will be of course the same as XK140 - a few more, a few less.

Thanks,

Roger

Roger Payne
8 Beggs Place
MACARTHUR
A.C.T. 2904
Australia-----Original Message-----
From: owner-xk@jag-lovers.org [mailto:owner-xk@jag-lovers.org] On Behalf Of
ysmalkie
Sent: Tuesday, 9 December 2014 9:46 AM
To: xk@jag-lovers.org
Subject: Re: [xk] XK120 Grommet list - for your verification

In reply to a message from ysmalkie sent Mon 8 Dec 2014:

… continued from last post…

GROMMET SB PN# C.2706,Lucas:859059, AS:C502, GR7 - OD: 3/4"
ID:1/8"

  • 3 in sill for body harness and battery cable, OD=18mm
  • 1 in firewall for speedo cable, OD=18mm
  • 1 in trunk forward right hand corner for fuel tank
    branch of the body harness. OD=18mm
  • 1 for windshield washer water tube through the
    firewall, behind the wiper motor. OD=16.5mm

GROMMET SB PN# C.2707, Lucas: 859060, AS:C503, GR8 - OD: 1 1/4"
ID:1/8"

  • 2 for Forward fender valance on RH side of car for head
    light bucket and turn/side light wire connection OD=28mm
  • 1 beside starter solenoid for wiring harness, OD=28mm
  • 1 in firewall for tach cable. OD=27mm
  • 1 in firewall behind wiper motor for cowl harness,
    OD=27mm
  • 1 for windshield washer vacuum tube through the
    firewall. OD=27mm

GROMMET SB PN# C.2708, Lucas: 859061, AS:C509, GR9 - OD: 1 3/8"
ID:1/2"

  • 1 in firewall under voltage regulator, OD=34mm
  • 1 for cowl harness negative battery cable in battery
    box area.

GROMMET SB PN# C.2850, Lucas: 859341, AS:C501 GR10 - OD: 1/2"
ID:1/8"

  • 2 in tops of fenders for side lamps. OD=12mm
  • 1 in firewall for bonnet release cable. OD=10mm

GROMMET S PN# C.4550, Lucas: 690995, R134

  • 2 for Horn Wire through the horn cover

PLUG (2) S Lucas: part of headlamp harness 860895, R27

  • 2 Headlight Bucket Harness

PLUG (1 or 2) S PN# 513, OD=1"

  • 1 Firewall Hole Plug for Oil and Temperature Lines,
    OD=24mm, R28

PLUG (2-3)

  • 1-2 Plug(s) near the hood open cable through the
    firewall. OD=7.25mm (plug like this is visible in XK120 Anatomy
    Vol 2, page 16, photo 2 & page 19, photo 1)
  • 1 plug under the washer bottle. OD=7.25mm.

PLUG (4) PN# GR.1010

  • 4 sill plugs OD=25mm

I am pretty sure of most of them, however I have some doubts
over a few - my comments are inline.

Tadek

ysmalkie
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5

In reply to a message from ysmalkie sent Mon 8 Dec 2014:

posted this list and photo back in 1997. May be of supplemental
interest:

http://www.jag-lovers.org/xk-lovers/library/120gromm.htm

Nick–
Nick Saltarelli '68 Cdn mkt E-type S1� OTS, '54 XK120SE OTS
Niagara, Ontario, Canada
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6

In reply to a message from N�ck sent Tue 9 Dec 2014:

Many thanks - I had same list - it’s a very good one. There is one
thing I do not understand:
GR17 Grommet: 1 for neg battery cable at rear of shut panel
GR9 Grommet: 1 for cowl harness negative battery cable in battery
box area.

Aren’t these 2 grommets for the same location?

Maybe my English is not too good, but I see only one grommet
needed for the battery cable in the battery box area.

Tadek–
ysmalkie
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7

Tadek;
I think I know the answer you are looking for…
The “GR17” grommet “at rear of shut panel” is actually located
outside the car, in the right rear wheel well, at the front of same, at
the bottom of the “B-Post”… The is where the “Negative” (Hot) wire
goes thru the sill box to the front of the XK… I know, I used tyre
chains one winter (Once!!) The chains expanded and cut the battery
cable in half!!
The “GR9” grommet “negative battery cable in battery box area”
is where the Negative Cable goes “down” thru the Battery
“Container” and out under the body… basically the cable is exiting
the vehicle. From this point it goes OVER to the sill box and into
the “GR17” Grommet… Com Pri??
Since you have an OTS, your “Battery Container” area might be a
bit different than the more refined (and better looking ;-}) DHC’s,
so it is possibly your XK might not need one of these grommets.
(BTW, Your English is better than mine!!!)
Charles #677556.
http://xktx.org----- Original Message -----
From: “ysmalkie”

Many thanks - I had same list - it’s a very good one. There is one
thing I do not understand:
GR17 Grommet: 1 for neg battery cable at rear of shut panel
GR9 Grommet: 1 for cowl harness negative battery cable in battery
box area.

Aren’t these 2 grommets for the same location?

Maybe my English is not too good, but I see only one grommet
needed for the battery cable in the battery box area.

Tadek

8

charles is correct in his interpretation
so GR17 is what I think Tadek notes as a “D” Donut shape ie it has a hole in
the centre and GR9 is a “SB” semi blind? ie it has a web in the middle
terryDate: Tue, 9 Dec 2014 14:35:26 -0600
From: cb@XKTX.Org
Subject: Re: [xk] XK120 Grommet list - for your verification

Tadek;
I think I know the answer you are looking for…
The “GR17” grommet “at rear of shut panel” is actually located
outside the car, in the right rear wheel well, at the front of same, at
the bottom of the “B-Post”… The is where the “Negative” (Hot) wire
goes thru the sill box to the front of the XK… I know, I used tyre
chains one winter (Once!!) The chains expanded and cut the battery
cable in half!!
The “GR9” grommet “negative battery cable in battery box area”
is where the Negative Cable goes “down” thru the Battery
“Container” and out under the body… basically the cable is exiting
the vehicle. From this point it goes OVER to the sill box and into
the “GR17” Grommet… Com Pri??
Since you have an OTS, your “Battery Container” area might be a
bit different than the more refined (and better looking ;-}) DHC’s,
so it is possibly your XK might not need one of these grommets.
(BTW, Your English is better than mine!!!)
Charles #677556.
http://xktx.org

  • ----- Original Message -----
    From: “ysmalkie”

Many thanks - I had same list - it’s a very good one. There is one
thing I do not understand:
GR17 Grommet: 1 for neg battery cable at rear of shut panel
GR9 Grommet: 1 for cowl harness negative battery cable in battery
box area.

9

In reply to a message from Terry Mcgrath sent Wed 10 Dec 2014:

Tadek and other interested listers,

Some additions to your excellent survey. I made a similar list
for the XK140 and found some Lucas numbers for these grommets.

Grommet Jaguar C977 has Lucas number 858065.

I’m not sure whether C974 is identical to Lucas 858062 as the
ID might be different: 5/16’’ (8 mm) for C974 and 1/4’'(6.4 mm)
for Lucas 858062.

Still haven’t found the corresponding Lucas number for C976.

Grommet C1426 is most likely Lucas 514732.

I found a different Lucas number for C2784 being Lucas 572683
instead of 199001, but both could be accurate (later
replacement).

Hope this helps to further complete your list.

Bob K.–
The original message included these comments:

Subject: Re: [xk] XK120 Grommet list - for your verification

–
Bob K. Jaguar XK 140 SE FHC S814683 DN
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10

In reply to a message from ysmalkie sent Mon 8 Dec 2014:

I have a grommet sold to me as a C976 that has molded into it
‘‘858062’’. Interestingly, it also has ‘‘L.E.W. 7’’. I was wondering
if the ‘‘L’’ part of that was Lucas, and whether the ‘‘7’’ indicated a
sequential series of standard Lucas grommets. Of course, it may be
just a coincidence, or mean something else entirely.

Has anyone else seem these sports of ''L.E.W ‘’ markings ?

Karl–
karl
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11

In reply to a message from karl sent Thu 11 Dec 2014:

Charles Terry and others,

Many thanks for your comments!..

The negative cable has 3 grommets:

  1. in the front of the sill
  2. in the rear of the sill
  3. in the battery box area

There is no doubt regarding the:

  1. front of the sill. It’s the GR7 semi blind grommet. (3/4’’
    diameter hole)
  2. Battery box area. It’s the GR9 grommet.

However, the rear sill grommet is more interesting.
Bill Basset mailed me, that when he was making the list few
decades back, he found the rear sill grommet to be larger than
the front one. From his photo it looks like the hole on the
back of the sill was 1’’.

This contradicts with what I have found on my sill: the holes
on the front and rear were all the same, roughly 0.7’’.

Question is, does anyone have an original lager diameter hole
in the back of the sill (compared to the front) for the battery
negative cable???

Tadek–
ysmalkie
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12

Tadek;
Here is a bit of info to throw some petrol on the flames…
On my June 1953 build XK120 DHC, the holes measure as
follows:

  1. In the Front of the Sill–
    There are TWO Holes, side-by-side, BOTH are 11/16" dia.
  2. In the Rear of Sill–
    There is One Hole, 11/16" dia.
    (I actually get 0.705" on the above three holes… vagrancies of age??)
  3. In the Battery Box Area–
    There is One hole, 1-1/8" dia.
    Sooooooooooooooo…
    Charles #677556.
    http://xktx.org----- Original Message -----
    From: “ysmalkie”

The negative cable has 3 grommets:

  1. in the front of the sill
  2. in the rear of the sill
  3. in the battery box area

There is no doubt regarding the:

  1. front of the sill. It’s the GR7 semi blind grommet. (3/4’’
    diameter hole)
  2. Battery box area. It’s the GR9 grommet.

However, the rear sill grommet is more interesting.
Bill Basset mailed me, that when he was making the list few
decades back, he found the rear sill grommet to be larger than
the front one. From his photo it looks like the hole on the
back of the sill was 1’'.

This contradicts with what I have found on my sill: the holes
on the front and rear were all the same, roughly 0.7’'.

Question is, does anyone have an original lager diameter hole
in the back of the sill (compared to the front) for the battery
negative cable???

Tadek

13

In reply to a message from cb@XKTX.Org sent Fri 12 Dec 2014:

Yes,

This is exactly what I have.

Anyone with an early xk120?? Maybe the early ones had it
different??

Tadek–
ysmalkie
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14

In reply to a message from ysmalkie sent Fri 12 Dec 2014:

Tadek,
My Sept 1950 build 120ots 670713 also has the small hole
approx .70 diameter.
Cliff–
The original message included these comments:

Anyone with an early xk120?? Maybe the early ones had it
different??

–
Cliff_C 51 xk120 ots, 53 xk120 fhc, 55 xk140 ots
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15

In reply to a message from Cliff_C sent Tue 16 Dec 2014:

Many thanks Cliff.

This probably means the hole diameter in the sill was then same
throughout the life of the steel xk120…

Tadek–
ysmalkie
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16

In reply to a message from karl sent Thu 11 Dec 2014:

While looking for something else I happened to find the
grommet C.976 is used on XK140 and described as ‘‘in wing
valence for chassis harness’’.

The Mark VII book has a list of grommets.
C.974 = Lucas 858062
C.975 = Lucas 858063
C.976 = Lucas 858064
C.977 = Lucas 858065
C.1426 = Lucas 858066
C.2706 = Lucas 859059
C.2707 = Lucas 859060
C.2708 = Lucas 859061
C.2850 = Lucas 859341
BD.5571 = Lucas 860398
C.8297 = Hellerman 2165–
The original message included these comments:

I have a grommet sold to me as a C976 that has molded into it
‘‘858062’’. Interestingly, it also has ‘‘L.E.W. 7’’. I was wondering

–
XK120 FHC, Mark V saloon, XJ12L Series II, S-Type 3.0
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17

In reply to a message from Rob Reilly sent Thu 18 Dec 2014:

Many thanks Rob!! This is great stuff…
Tadek–
ysmalkie
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18

In reply to a message from ysmalkie sent Thu 18 Dec 2014:

In some respects, I am now more confused than ever.

In searching for the correct grommets for the optional fog
light wires, the item specified is C.976, and so I purchased
one that was advertised as NOS, and it came with the molded in
letters that seems to be 858062, and incidentally seems to me
to be far too large for the application and larger that the
photos I can find of factory prepared XK120s with fog lights,
but seems to match Tadek’s tabulation for a C.976
dimensionally.

Now comes Rob who points out that 858062 is actually the
correct Lucas No, for C.974. Interestingly, according to
Tadek’s breakout, C.974 would be 1/4’’ ID. 1/2’'OD which is much
closer to the appearance pf the ones on pictures.

Can anyone offer an explanation that fits this seemingly
contradictory data ?–
karl
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19

In reply to a message from karl sent Thu 18 Dec 2014:

Another sighting…
C974 is listed in the Mark V parts book for mounting the
petrol pump. This is the same SU PP31.LCS pump with 1/4’’
studs as used on XKs.–
XK120 FHC, Mark V saloon, XJ12L Series II, S-Type 3.0
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20

In reply to a message from Rob Reilly sent Fri 19 Dec 2014:

My mistake, the PP31 has 5/16 studs. This grommet must be
for the PP19 pump, the book is not clear which.–
The original message included these comments:

C974 is listed in the Mark V parts book for mounting the

–
XK120 FHC, Mark V saloon, XJ12L Series II, S-Type 3.0
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