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Proform Self-Locking Wedge Header Bolts 66823 Fasteners, Bolts, Hex Head, Steel, Nickel Plated, 3/8 in.-16 Thread Size, 0.750 in. Underhead Length, Set of 16

SKU: PRO66823

Header Fasteners

Proform Self-Locking Wedge Header Bolts 66823 Fasteners, Bolts, Hex Head, Steel, Nickel Plated, 3/8 in.-16 Thread Size, 0.750 in. Underhead Length, Set of 16

SKU: PRO66823

Header Fasteners
A$120.76
LOW STOCK! Est Ship 4-7 days. HURRY! LOW STOCK. This item is in limited stock at one of our distribution centres. The ETA is the approximate time required to prepare your order for dispatch.
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Description

Proform self-locking wedge header bolts get a grip on your headers that won't let go—until you're ready! These permanently assembled bolt sets feature special washers with super-hardened serrated teeth that, when torqued to 28 lbs.-ft., bite into and grab the bottom of the bolt head and the top surface of the header. Any bolt-loosening rotation is blocked by the wedge-locking action created by the washers' interfacing cams; but what's really impressive is that engine vibration—the enemy—increases the tension, making them even more secure! The bolts are re-useable and you can count on them to not fail. Proform self-locking wedge header bolts put an end to the constant tightening for a leak-free, headache-free future. They're available in different finishes and sizes for applications from 1965 and up.

Part Type

Wedge Locking Header Bolts 3/8 x 3/4L (16)

Data: v4.2 - Upd: 2026-10-15 09:16:44

Specifications

Product Attributes - Brand
Proform Parts
Product Attributes - Manufacturer's Part Number
66823
Product Attributes - Part Type
Header Fasteners
Product Attributes - Product Line
Proform Self-Locking Wedge Header Bolts
Product Attributes - UPC
037995711888
Product Attributes - Fastener Style
Bolt
Product Attributes - Thread Size
3/8 in.-16
Product Attributes - Head Style
Hex
Product Attributes - Underhead Length (in.)
0.750 in.
Product Attributes - Underhead Length (mm)
19.05mm
Product Attributes - Fastener Material
Steel
Product Attributes - Fastener Color
Nickel plated
Product Attributes - Quantity
Sold as a set of 16.

Reference Information

Brand Name/s Proform Parts
StreetFX SKU pro66823
SFX Item ID 5006670
Supplier Item Code 5006670
Manufacturer SKU 66823
Manufacturer UPC 37995711888
Alternative References PFM66823, in.-16

Compatibility

Application Data
  • UniversalYes

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