Wedge-Locking Header for SB , BB , , , , & in 3/8" x 1" Long
Product Details
Brand:
Part #: 66753
Features and SpecificationsEach Grade 8 Header is permanently assembled with a pair of special washers. When the is torqued to 28+ ft-lbs, the washers super-hardened external teeth bite into and the bottom of the head and the top surface of the header. After being self-locked in this manner, any -loosening rotation is blocked by a wedge-locking action created by the washers interfacing, matching . Its an uphill climb: vibration that might ordinarily loosen the actually increases the wedge-locking tension, securing the even more. Because this simple wedge-locking uses tension instead of friction, contact with oil actually facilitates the wedge effect. When changing headers, Header be untightened with a normal wrench, lubricated, and reused.
Quick
Fits Select 12 3/8" Diameter Applications
Grade 8 -12.9-
Hex Head Type
1-inch Length
Fits V6, SB 265-400, , Olds, '79 and earlier, BB 383-440 exc 413, V8's w 3/8"
Sold as One Set of 12 Pieces
WARNING: This product expose you to chemicals including Styrene, which is known to the State of to cause . For more information go to