• Dear Guest!
    A paid subscription is not required to participate at BCF. However, if you find this forum to be a useful resource, and if you want to ensure we can stay online - Please consider supporting us by **Upgrading**
    (PS: Subscribers don't see this UGLY banner)

Installing rubber grommets in firewall?

Chet Zerlin

Jedi Trainee
Country flag
I'm trying to replace the disintegrating rubber grommets that are (were?) used to seal the many holes where various wires went through the firewall of my BN6 to help insulate my interior from engine heat.

Made a small cut with a razor blade to get them over the existing wires but can't seem get them mounted into the holes.

Is there an easier way to do this other than just to keep pushing and bending and shoving?:smile:



Country flag
An evaporating detergent solution, like 409 or Windex, helps.

Agree re windex. I like a small dull, rounded, flat-blade screwdriver. If you've cut it, start with one end and push it into the hole, pushing the cut end around the periphery of the hole.

The grommets come in a lot of sizes. I like to measure the hole with calipers and use that to check the ID of the grommet to make sure it's correct.

Deleted member 21878

2nd on the dull screw driver. i used one and just worked around the edge. it is amazing, you think it won't fit and then when it is in, it is fine. of course push the away part in first and work towards you.

some items you may be able to unhook and slide the grommet over so you do not have to cut. may be eaiser to handle.

i found on the new grommets there was still a small gap around the cable or whatever. i used some rope caulk, which does not harden, on the inside squeezed to the cable/wires up to the grommet so there was no light coming thru. if your grommets look ok, you might even be able to do this without putting new ones in. the caulk does not show and it stays in place.


Country flag
Similar threads
Thread starter Title Forum Replies Date
Tinkerman TR2/3/3A Installing botton rubber on windshield Triumph 7
S Help! Installing Rubber on Header rail MG 5
J Installing Adapter Hubs for Wire Wheels on a Bugeye Austin Healey 5
S Installing a Radiator Fan Austin Healey 9
G Installing New Rocker Shaft Assembly Austin Healey 3
W Need advice on installing new side curtain glass Spridgets 1
Bayless Help please installing bonnet release cable Spridgets 8
M TR6 Installing Retrosound? Triumph 4
S TR2/3/3A Installing the distributor pedestal. Triumph 3
K TR2/3/3A Question about installing the steering wheel control head? Triumph 1
A TR6 Installing differential and transmission Triumph 10
Z Installing Toe Board Panels Austin Healey 1
K TR2/3/3A Installing Brake Caliper pistons into the bore? Triumph 21
CJ Burton MGB-GT Installing Seat Covers for 1962 - 1967 MGB GT MG 0
A Early 1967 AH Sprite - installing steering column and new directional switch? Spridgets 0
B Installing cam bearings 1275, can I do it? Spridgets 1
bighealeysource Installing stainless steel brake hose on BN2 Austin Healey 5
steveg TR6 Installing stock trailing arm bushings on the car - is it possible? Triumph 2
steveg TR6 Installing adjustable trailing arm brackets Triumph 7
T Installing Garmin GPS in a BJ7 Austin Healey 19
F Installing AC in my 1960 Healey Austin Healey 14
S TR2/3/3A technique for installing a door Triumph 5
R TR2/3/3A Installing wiring harness in steering column Triumph 59
R TR2/3/3A Installing gas tank Triumph 6
S TR2/3/3A installing a fuse in the red tail lights Triumph 4
S TR2/3/3A installing the wiring harness Triumph 8
R Installing Sprite Luggage Rack Spridgets 9
Lukens TR2/3/3A Installing a throttle. Triumph 2
J Powertune booster for a bj8 , trouble installing Austin Healey 2
B TR2/3/3A Installing dzus fastners in bonnet Triumph 8
D Prepping Floors Before Installing Interior Restoration & Tools 6
drooartz Installing front hubs, tips? Spridgets 15
E TR4/4A Wiring the horn when installing a Moto -Lita steering wheel Triumph 4
K TR2/3/3A Installing Moss wheel spacers? Triumph 5
D BT7 tri-carb installing my crank Austin Healey 4
aero3113 Installing Front rotors to hubs Austin Healey 2
C Advice for installing a 3000 Grille??? Austin Healey 7
B MGB Installing new upper fulcrum bushings MG 5
B MGB Installing upper fulcrum bushings MG 0
S TR4/4A procedure for installing gauges etc Triumph 0
I Tips for installing intake manifold plugs in a stock Bugeye? Spridgets 6
55modified Help installing toggle dip switch on dash for lights. Austin Healey 23
TRMark TR4/4A Installing a new windscreen Triumph 9
55modified Rear anti-roll bar. Is it worth installing on a BN1? Austin Healey 22
T Installing a Lucas 16 ACR alternator on Bugeye Spridgets 10
KVH General Tech Installing the Pistons and Rings Triumph 7
T Need advice for installing a Winner's Circle Panhard rod on a BE Spridgets 4
6 General Tech Installing New Oil Pressure Gauge MG 5
6 Installing Oil Pressure Gauge Spridgets 2
T TR4/4A Installing wheel arch covers in a Tr4a Triumph 0

Similar threads