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Arp

Arp

ARP SB Chevy V6 18A hi-port 3/8in holes head bolt kit

SKU: ARP234-3721

Cylinder Head Fasteners

ARP Head Bolt Kits...

Arp

Arp

ARP SB Chevy V6 18A hi-port 3/8in holes head bolt kit

SKU: ARP234-3721

Cylinder Head Fasteners

ARP Head Bolt Kits...

A$641.16
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

The Pro Series cylinder head bolts from ARP are cold-forged to ensure molecular integrity. They are heat-treated prior to thread rolling and machining, and are rated at a whopping 190,000 psi. The Pro Series are also available with hex and 12-point heads. All kits come complete with hardened parallel washers for even load distribution and accurate torque readings.

Additional Information

Fits SBC engines w/18 degree hi-port heads.

Part Type

SBC Head Bolt Kit 12pt.

Data: v4.2 - Upd: 2026-10-13 21:31:46

Specifications

Product Attributes - Brand
ARP
Product Attributes - Manufacturer's Part Number
234-3721
Product Attributes - Part Type
Cylinder Head Fasteners
Product Attributes - Product Line
ARP Pro Series Cylinder Head Bolt Kits
Product Attributes - UPC
672036008901
Product Attributes - Fastener Style
Bolt
Product Attributes - Undercut Stud
No
Product Attributes - Head Style
12-point
Product Attributes - Fastener Material
8740 chromoly
Product Attributes - Fastener Color
Black
Product Attributes - Washers Included
Yes
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
Fits cylinder heads with 3/8 in. holes, casting numbers 10134363, and 10134364.

Reference Information

Brand Name/s Arp
StreetFX SKU arp234-3721
SFX Item ID 4368086
Supplier Item Code 4368086
Manufacturer SKU 234-3721
Manufacturer UPC 672036008901
Alternative References 18A, 3/8in

Compatibility

Application Data
  • MakeCHEVROLET
    Beginning Year1962
    Ending Year1969
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.4L/327
    Cylinder Head TypeGM 18 degree high port
  • MakeCHEVROLET
    Beginning Year1967
    Ending Year1968
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size4.9L/302
    Cylinder Head TypeGM 18 degree high port
  • MakeCHEVROLET
    Beginning Year1967
    Ending Year2000
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
    Cylinder Head TypeGM 18 degree high port
  • MakeCHEVROLET
    Beginning Year1970
    Ending Year1980
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size6.6L/400
    Cylinder Head TypeGM 18 degree high port

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