I suspect fitting the tunnel cover was made slightly more complicated because of my Caterham’s carbon interior panels. Before you attempt to install the tunnel cover, make sure the gear knob isn’t fitted and the handbrake can be pulled to the absolute maximum position.

Fitting is easy. Position the front first under the dashboard. Then the gear stick goes through the tunnel cover hole. Then get the handbrake through the tunnel cover, and lay the cover on top of the tunnel. You can see from the photos the bottom is tight against the back panel, but the top had a large gap. This presented a problem for me, because the top gap will be the only part of the tunnel cover back panel fit that will be possible to see when the seats are fitted.

This gave me two options: bend the top of the tunnel cover back towards the back panel, or bend the bottom away from back panel. I decided to concentrate my efforts on the bottom of the tunnel cover, because it won’t be seen once the seats are fitted.

Be very careful bending the tunnel cover, it’s easy to end up with a large kink between the tunnel cover and the back panel, which is very unsightly.

To bend the tunnel cover I used a large trim plastic lever, pressing on the aluminium not the carbon fibre.

To help with closing the gap, I trimmed the carpet on the tunnel sides where the tunnel widens and removed the excess material on the tunnel cover.

I was happy with the final result, even though it looks like I could have got it to fit a touch tighter. However, I was on the limit of getting horrid kinks in the tunnel cover, so that also influenced my decision to stop there.

I know the instructions call for a self tapping screw to be installed at the rear of the tunnel cover, but I have never had that screw fitted on any of my previous Caterhams. Also, the Tillet seats I have chosen hold the tunnel cover, making the screw redundant.

However, for some strange reason the screw hole on the tunnel cover had been pushed through already, so leaving the hole was no longer an option. I therefore decided to fit a plastic wing bolt (cut to size) to fill the hole.

The gear knob is next: loosen the grub screw, then screw the gear knob onto the gear stick as tightly as possible. You will notice the H-pattern isn’t in the correct position. Just loosen the gear knob and turn it until the H-pattern is to your liking, then tighten the grub screw.

Tools Used

  • Large plastic trim leaver
  • 3mm Alen key