Honda Genuine Distributor Cap - B/D/H Series

When genuine parts are this cheap, you'd be crazy not to use them :)

If you are not sure which cap you need

Because B16 and B18 distributors are interchangeable often some B16's actually have a B18c distributor and vice versa.

If you are not sure which you have, quickly measure the distance of the top two distributor cap bolts. B16 (small) are approx 103mm - B18C (large) are 107mm.