Home/All Parts/Proform/Proform Wedge-Locking Header Bolts Hex Head M8 X 1.181in Chevy LS Nickel Plt 12 Pcs (66755)

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Fitment data included Warranty backed Tracked delivery

Product Details

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.

Weight: 0.65 lb

Confirm this fits your vehicle. Use the “Check Fit” selector, or see the Vehicle Compatibility list below for confirmed years, makes and models.

Proform

Proform Wedge-Locking Header Bolts Hex Head M8 X 1.181in Chevy LS Nickel Plt 12 Pcs (66755)

Name: Proform Wedge-Locking Header Bolts Hex Head M8 X 1.181in Chevy LS Nickel Plt 12 Pcs (66755)
Brand: Proform
SKU: PFM66755
Price: 85.5 CAD
Availability: InStock

Part #: PFM66755 In stock

$85.50

Price in CAD. Taxes & shipping calculated at checkout.

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Arrives within 1 week.Estimate, not a guarantee — if an order will take longer we contact you before taking payment.

Tracked shipping across CanadaExpress shipping available · 30-day returns · Oversize and freight items ship at a flat rate shown at checkout · Shipping details

Fitment verified against manufacturer data.Wrong fit? Return shipping's on us.

Tracked delivery across Canada.

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Fitment Data

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Fits these vehicles

1997–1999 Chevrolet C15001997–1999 Chevrolet C1500 Suburban1997–1999 Chevrolet C25001997–1999 Chevrolet C2500 Suburban1997–1999 Chevrolet C351997–1999 Chevrolet C35001997–1999 Chevrolet Camaro1997–1999 Chevrolet Cargo Van

Fitment data is provided as a guide — please verify before purchase.

Vehicle fitment

Estimated fitment — verify before purchase

Years	Make	Model
1997–1999	Chevrolet	C1500
1997–1999	Chevrolet	C1500 Suburban
1997–1999	Chevrolet	C2500
1997–1999	Chevrolet	C2500 Suburban
1997–1999	Chevrolet	C35
1997–1999	Chevrolet	C3500
1997–1999	Chevrolet	Camaro
1997–1999	Chevrolet	Cargo Van
1997–1999	Chevrolet	Corvette
1997–1999	Chevrolet	Express 1500
1997–1999	Chevrolet	Express 2500
1997–1999	Chevrolet	Express 3500
1997–1999	Chevrolet	K1500
1997–1999	Chevrolet	K1500 Suburban
1997–1999	Chevrolet	K2500
1997–1999	Chevrolet	K2500 Suburban
1997–1999	Chevrolet	K3500
1999	Chevrolet	L30
1997–1999	Chevrolet	P30
1997–1999	Chevrolet	Silverado
1999	Chevrolet	Silverado 1500
1999	Chevrolet	Silverado 2500
1997–1999	Chevrolet	Suburban 1500
1997–1999	Chevrolet	Tahoe
1997–1999	Chevrolet	W3500 Tiltmaster
1997–1999	Chevrolet	W4500 Tiltmaster

Check fitment before you order. We publish fitment from manufacturer and industry data and take care with it, but fit can depend on trim, cab and bed configuration, factory options and any modifications already on your vehicle. If you are unsure, contact us before ordering — and if fitment we published turns out to be wrong, we cover the return.