Brand: ARP Manufacturer's Part Number: 130-2103 Part Type: Intake Manifold Bolts Product Line: ARP Chromoly Intake Manifold Bolt Kits Automotive Fittings Part Number: ARP-130-2103 UPC: 672036047351 Thread Size: M6 x 1.0 Washer Included: Yes Head Style: 12-point Fastener Style: Bolt Fastener Color: Black Fastener Material: Chromoly Quantity: Sold as a kit. Notes: These bolts have a 55mm under head length. Designed for use with GM Performance intakes. Description: ARP rugged, black-oxide coated chromoly intake manifold bolts are rated at 170,000 psi. They're precision-machined for optimum thread engagement and have a wide-area flange for better load distribution. They also feature precision-rolled threads, which prevent galling, while promoting more consistent torque loading. These bolts are available with either hex or 12-point heads, and washers are included.