Harmonic Balancer Bolt, Hex Head Black Oxide Hardline • 1/8" NPT thread in

• 1/8" NPT thread in neck

where the heater hose connects to the block

Jeep & Toyota (Z30) 13/16-16

Designed for applications where engine configuration/size cause clearances issues for thicker core radiators

Harmonic Balancer Bolt, Hex Head Black Oxide Hardline • 1/8" NPT thread infits BB Chev 1 2 20 Thread x 1. 550" UHL With 1 2" Square Drive Part Number : AR135 2503 Arp Offers A Special Version Of Its Rugged Balancer 200,000 Psi Rated Balancer Bolt That Can Accept Standard 1 2 Drive Ratchet Or Breaker Bar To Facilitate Rotation Of The Crank Assembly. * 1 2 Square Drive Forged Into Bolt Head, Enabling The Rotation Of An Engine With Any 1 2 Drive Tool * Made From Heat treated 8740 Chrome Moly Steel With Heavy duty Black Oxide