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Note: Our sales team will be away from Thursday 30th July until Tuesday 4th August. Phone lines will be unattended and email replies may be delayed. Orders will continue to be processed and shipped as normal.
Note: Our sales team will be away from Thursday 30th July until Tuesday 4th August. Phone lines will be unattended and email replies may be delayed. Orders will continue to be processed and shipped as normal.
PROFORM Suit GM LS Series, M8 x .948" UHL (12-Pack) Wedge-Locking Header Bolts - Nickle Finish PR66754 Autofit

Wedge-Locking Header Bolts - Nickle Finish PR66754

PR66754 - WEDGE LOCKING HEADER BOLTS LS
SKU PR66754
by PROFORM
$78.26 +GST - $78.26 +GST
$78.26 +GST
$78.26 +GST
$78.26 +GST - $78.26 +GST
$78.26 +GST
$89.999 Including GST (NZ Customers only)
Availability:
in stock, ready to be shipped
Wedge-Locking Header Bolts - Nickle Finish

Suit GM LS Series, M8 x .948" UHL (12-Pack)

PR66754

66754

Each PROFORM Grade 8 Header Bolt is permanently assembled with a pair of special washers. When the bolt is 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. Its an uphill climb: vibration that might ordinarily loosen the bolt actually increases the wedge-locking tension, securing the bolt even more. Because this simple wedge-locking method uses tension instead of friction, contact with oil actually facilitates the wedge effect. When changing headers, PROFORM Header Bolts can be untightened with a normal wrench, lubricated, and reused. Features: Grade 8 (12.9) Steel Hex Head Type .984-inch Length Fits GM LS Engines with 1/4-inch Wide Flange Sold as One Set of 12 Pieces