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a tapered ramp ground into the side of the spool reduces the passage to restrict flow to the nozzles
- 5/16-18" Mounting Hole (x1)
Part Number: AR300-8391
This Dual Valve Springs set are for Drag Racing Setups Only
ARP Mark V, w/Dart heads, undercut 12pt head stud kit (235-4713) toyota-alphard-vellfire-2nd-gen a tapered ramp ground intoARP Mark V, w Dart heads, undercut 12pt head stud kit (235 4713) ARP Pro Series Cylinder Head Studs 235 4713 ARP Pro Series cylinder head studs are cold forged to ensure molecular integrity. They're heat treated prior to thread rolling and machining. ARP Pro Series kits are also available with 12 point nuts, and all studs come complete with hardened parallel washers for an even load distribution and accurate torque readings. With hundreds of models
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