ARP 5/8-18 12pt nut kit

Here at Co-ordSport we have been supplying ARP products for over 15 years! With on average over 400+ unique part-numbers stocked and available for immediate dispatch, you can be sure to get the best service from us. Stocking a large range of products including head, rod, header and main studs as well as assembly lubrication, stretch gauges and more.

Starting in 1968, ARP have plenty of experience in the market, starting from Design, Installation and metallurgy, right through to selecting the best materials and recognizing common failures. The company was originally founded by Gary Holzapfel after noticing many engines at the time were breaking due to fastener failure. Spotting this type of gap in the market and acting on it has created a global automotive products company, still going 50+ years later! To this day ARP have thousands of unique part-numbers available to supply to the market, covering virtually every engine fastener in the world!