NGK TRS1409 competition non-resistive anti-parasite for standard spark plugs or R5540F with olive

Here is an anti-parasite, premium spark plug cap. Competition piece for standard candles with olive or specific R5540F candles. It is not resistive and is therefore intended for spark plugs without R. This competition model is intended for the most extreme conditions. The olive engagement system is ball-type.

For R5540F or standard spark plugs with olive without resistance.