Holden V8 253, 304, 308 Intake Bolts Black Finish 12 Point Head, Pack of 14
SKU: AF37-1225
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Holden V8 Intake Bolts – 3/8"-16, 12-Point Head, Black Finish (14-Pack)
Upgrade your Holden V8 intake installation with Aeroflow's 3/8"-16 bolts. Crafted from chrome moly 8740 for maximum strength and finished in durable black oxide for long-lasting corrosion resistance. The compact 12-point head is designed for tight clearance on aftermarket manifolds, delivering reliable torque without interference.
Each kit is a 14-pack and includes thick flat washers to ensure even clamping pressure and a stable, leak-free seal when fastening the intake manifold.
Key specifications
- Thread size: 3/8"-16
- Under Head Length: 38.40 mm
- Head Diameter: 13.60 mm
- Shank Diameter: 9.30 mm
- Shank Length: 8 mm
- Washer Outside Diameter: 18 mm
- Washer Inside Diameter: 10.05 mm
- Washer Thickness: 3 mm
- Material: Chrome moly 8740
- Finish: Black oxide
- Head type: 12-point
- Pack size: 14 bolts
- Washer type: Thick flat washers
- Fitment: Holden V8 253, 304, 308
Why choose these bolts?
When upgrading to aftermarket intakes, standard bolts can clash with redesigned intake port spacing or sit too high to clear. These bolts’ shorter under-head length and compact 12-point head minimize interference while maintaining superior clamping force. The chrome moly alloy provides the needed shear strength for performance applications, and the black oxide coating protects against corrosion and heat-related wear.