Honda-SOHC

Similar but slightly different markings with SBF05-R

This will make you smile my angled ones I have just noticed are marked SBF05 not only is there no "R" but the NGK branding is also painted white wtf?

The straight caps have a pair of slots moulded in - presumably to fit a tool for pulling off the caps - my angled ones do not but being angled easier to remove without pulling on the HT lead.

Might be I have two genuine & two aftermarket - a Guru here will know!

My 400 came with new looking brown coloured NGK resistor type caps already fitted - they are substantial with the NGK moulded into the cap in brown. Two straight, two angled.

Those black ones look fake to me as the branding does not look right somehow - see how different they are to the DS ones in their photo. They look more like car ones with the cheap white paint on the logo.

The genuine NGK ones are quite expensive iirc.

If you look at the DS ones although in Black the NGK markings are like mine cast into the moulding.

Does your bottom mount have a threaded plate attached or is it a nut & bolt fitting?

Would a difference in float height explain this?

Good point DR I had to switch the polarity as well to suit the negative earth - can't remeber if I had to change any bullet connectors.

I found some similar ones on e-bay for my 500 they work just fine except the distance between the mounting points was about 5-10 mm shorter. I just fitted a shorort link bracket to make them fit - mine were branded as Hendler from a firm near Uttoxter, Staffs.

These are mine are they not an original design?

.400 lamp change 2 by Macabe Thiele, on Flickr

I would be chasing that up as it might be accurate!