Header Bolts, 12-Point Head, 30mm UHL, 3/8 in. Wrench, Stainless Steel, Polished, Chevy, LS Engine, Set of 12 Part Number: ARP-434-1202 4.41 out of 5 stars ( 29 )

Allen wrench with the stage 8 bolts is the easiest. revtime , 03-13-2005 10:58 PM. Registered User.

Choose from our selection of square-head wrenches, including over 550 products in a wide range of styles and sizes. In stock and ready to ship. BROWSE CATALOG. Abrading & Polishing; Also known as spud, structural, and construction wrenches, use the pointed end of the handle to align bolt holes during assembly. Striking Open-End Wrenches.

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Header Bolts ARP manufactures premium grade bolt kits to facilitate installation of exhaust headers in both stainless steel or 8740 chrome moly steel. The Stainless 300 material is not affected by corrosion or extreme heat, making it ideal for the application. Universal Bolt Kit, 5/16'' Wrench ; 12-point ; 3/8'' x 1.000'' 16/pkg; View

Like PDude said use a 3/8” head header bolts. And I took a boxed 3/8” wrench and grind down to about 1/3 the thickness and reduced the overall 

Open-end wrenches are a double-ended wrench with a U-shaped head at each end. They are used for nuts and bolts that are hard to reach. The design allows the user to approach the fastener from two different directions. One head is slightly smaller than the other, allowing you to work on bolts of slightly differing sizes with one tool.

Buy 20-Piece Flex-Head Ratcheting Wrench Set, Screwdriver Bit Head Set, 8-19mm Metric Ratcheting Combination Wrench Set in Chrome Vanadium Steel with Storage Case at Walmart.com Frictional rotation design secures head movement, locating bolts and nuts more easily. 180° Flex-head 180°flexible rotation design allows you get access to narrow

Get the ARP bolts with the 3/8" heads. The ARP part #s are 100-1102 in black oxide and 400-1102 in stainless. You can fit a 1/4" drive socket on them with no problem. When you look at Jegs or Summit they have them listed as a BBC part. Both the BBC and Ford will use 16 bolts and they are 3/8-16 x .750".

It's not a pretty wrench by most standards, and is a tiny bit thin, but it fits nuts well and I like the different offset for the other end. It's somewhat short 

U-bolts are highly functional fasteners that are exactly what they sound like - bolts fashioned in the shape of a "u" with screw threads on both ends.. Used primarily in plum and other piping systems, there are a wide range of possible uses for Hillsboro, Oregon U-bolts.To accommodate various applications, U-bolts can be purchased in several slightly different configurations: