Brand: Automotive Racing Products (ARP)
Replace your main bearing cap bolts with high-strength ARP main studs for improved engine life under the most demanding conditions!
Main studs locate the main bearing caps more securely than bolts alone, which means less tendency for the caps to walk and fret the mating surfaces. Studs also provide more accurate and consistent clamping force because the fastener does not twist when you apply your torque wrench. Studs only get installed once (rather than at every rebuild), which reduces the chances of damage to the female threads in the block.
ARP main studs are made from custom-alloyed ARP2000® steel, heat-treated to 220,000 psi tensile strength with J-form threads that are rolled (not cut) after heat treatment (not before) for unmatched strength and precision.
This main stud set fits the Rotax 1503 4-TEC 3-cylinder engine used in Sea-Doo personal watercraft (GTI, GTR, GTX, RXP, RXT) as well as several brands of jet boats (such as Chaparral, Scarab, and Glaston). Includes eight studs with matching hardened washers and 12-point nuts, and a packet of ARP assembly lubricant.
