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Proform Wedge Locking Header Bolts 3/4

Proform Wedge Locking Header Bolts 3/4
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Item Number: 10040
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Unit Price: $38.00
Out of Stock
Quantity 

Manufacturer Part Number66752
New
1966-96 Ford Bronco
1973-96 Ford Truck
289, 302, 351w, 351M, 400, 429, 460 3/4", Set of 16
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 Detailed Description
These Proform wedge locking header bolts are permanently assembled with a pair of special washers. When the bolts are torqued to 28 ft.-lbs., the washers' super-hardened external teeth bite into and grip the bottom of the bolt head and the top surface of the header. After being self-locked in this manner, any bolt-loosening rotation is blocked by a wedge-locking action created by the washers' interfacing, matching cams. Because this simple wedge-locking method uses tension instead of friction, contact with oil actually facilitates the wedge effect. When changing headers, the Proform wedge locking header bolts can be loosened with a normal wrench, lubricated, and reused.
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