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Product descriptionEach 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. Sold as a set.
Product Details:
- Engine Header Bolts
- Wedge-Locking Technology
- Hex Head Type
- 8mm x 1.25 x 1.181Inch Long
- Shiny Nickel Plated Finish
- 12 Pcs in kit
- Fits GM LS Engines With 3/8 Inch Wide Flange
- Sold As A Set
Vendor Part Number: 66755
Proform Catalog
The approximate size of the packed product or the sales package is 153 x 28 x 97 mm.
EngineChevy LSMaterialSteelThread8 mm
Weight0,3 kg(The product may have a light retail packaging.)
AvailabilityAvailable to order from the supplier. Estimated delivery time
7 - 15 day`s from order.
Delivery time?
Delivery time
If the product is in stock in Vantaa, it can usually be picked up or delivered within the same day.
If the product is in the supplier's stock, the product will arrive at the Vantaa warehouse the following week if the order is placed by Monday 6:00 p.m.
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