Skip to main content

Find parts that fit

We need more information about your vehicle to confirm fit.

Picture 1 of 1

Picture 1 of 1

ProForm 66755 Wedge Locking Header Bolts LS 8mm X 1.18in

5.02 product ratings
performancepartsracing (132880)
99.6% positive feedback
Price:
US $34.95
ApproximatelyC $48.21
+ $11.77 shipping
Estimated delivery Tue, Sep 16 - Thu, Sep 25
Returns:
30 days return. Buyer pays for return shipping. If you use an eBay shipping label, it will be deducted from your refund amount.
Condition:
New

About this product

Product Identifiers

BrandProForm
Manufacturer Part Number66755
GTIN0037995667550
UPC0037995667550
eBay Product ID (ePID)20017012532

Product Key Features

Performance PartYes
MaterialSteel
California Prop 65 WarningYes
OE/OEM Part NumberNone

Dimensions

Item Length1.181in
Item Diameter8mm

All listings for this product

Buy It Now
New
Proform Header Bolt Kit 66755; Wedge Lock M8 x 1.25 x 1.181 in. for Chevy LS
Almost gone
item 1 Proform Header Bolt Kit 66755; Wedge Lock M8 x 1.25 x 1.181 in. for Chevy LS
C $48.21
Proform 66755 Wedge Lock Header Bolts Self Locking Hex Head 8mm x 1.181 LS1 LS6
Last one
item 2 Proform 66755 Wedge Lock Header Bolts Self Locking Hex Head 8mm x 1.181 LS1 LS6
C $48.21
+C $28.24 shipping
Proform 66755 Exhaust Header Bolt For Select 97-19 Chevrolet Models
item 3 Proform 66755 Exhaust Header Bolt For Select 97-19 Chevrolet Models
C $56.64
+C $22.06 shipping
LS1 LS6 LS2 LS7 LSQ4 Exhaust Header Bolts M8 x 30mm 6-PT Self-Locking Wedge PRF
Last one
item 4 LS1 LS6 LS2 LS7 LSQ4 Exhaust Header Bolts M8 x 30mm 6-PT Self-Locking Wedge PRF
C $49.64
+C $32.40 shipping
PROFORM Wedge Locking Header Bolts for GM LS-Series * 8mm x 1.18in, Set of 12
item 5 PROFORM Wedge Locking Header Bolts for GM LS-Series * 8mm x 1.18in, Set of 12
C $67.58
+C $16.81 shipping
Proform 66755 Wedge-Locking Header Bolts Hex Head M8 X 1.181In Nickel Plt 12 Pcs
item 6 Proform 66755 Wedge-Locking Header Bolts Hex Head M8 X 1.181In Nickel Plt 12 Pcs
C $64.20
+C $21.81 shipping
Proform 66755 Header Bolt
item 7 Proform 66755 Header Bolt
C $64.51
+C $21.82 shipping
Proform for Wedge-Locking Header Bolts Hex Head M8 X 1.181in Chevy LS Nickel Plt
item 8 Proform for Wedge-Locking Header Bolts Hex Head M8 X 1.181in Chevy LS Nickel Plt
C $65.45
+C $22.32 shipping
Proform Header Bolt Set for GM LS-Series | 66755
item 9 Proform Header Bolt Set for GM LS-Series | 66755
C $68.40
+C $21.93 shipping
Wedge Locking Header Bolts LS 8mm x 1.18in PROFORM 66755
item 10 Wedge Locking Header Bolts LS 8mm x 1.18in PROFORM 66755
C $52.56
+C $38.00 shipping
Proform 66755 Wedge-Locking Header Bolts
item 11 Proform 66755 Wedge-Locking Header Bolts
C $48.21
+C $43.09 shipping
Proform 66755 Locking Header Bolts - Set of 12 - 1.181" L - GM LS Engines 8mm
Last one
item 12 Proform 66755 Locking Header Bolts - Set of 12 - 1.181" L - GM LS Engines 8mm
C $68.96
+C $22.42 shipping
Proform Wedge Locking Header Bolts LS 8mm x 1.18in 66755
item 13 Proform Wedge Locking Header Bolts LS 8mm x 1.18in 66755
C $70.75
+C $22.00 shipping
item 14 Proform 66755 M8 Diameter 1.181" Long Wedge-Locking Header Bolts
C $72.27
+C $22.04 shipping
Proform Wedge-Locking Header Bolts 66755
item 15 Proform Wedge-Locking Header Bolts 66755
C $74.13
+C $22.57 shipping
Proform for Wedge-Locking Header Bolts Hex Head M8 X 1.181in Chevy LS Nickel Plt
item 16 Proform for Wedge-Locking Header Bolts Hex Head M8 X 1.181in Chevy LS Nickel Plt
C $65.78
+C $31.23 shipping
Wedge Locking Header Bolts Fits LS 8mm X 1.18in
item 17 Wedge Locking Header Bolts Fits LS 8mm X 1.18in
C $66.47
+C $30.55 shipping
Proform 66755 Wedge-Locking Header Bolts
item 18 Proform 66755 Wedge-Locking Header Bolts
C $48.21
+C $52.76 shipping
PROFORM Wedge Locking Header Bolts LS 8mm x 1.18in 66755
item 19 PROFORM Wedge Locking Header Bolts LS 8mm x 1.18in 66755
C $80.89
+C $22.77 shipping
Proform Wedge-Locking Header Bolts Fits GM LS Engines with 3/8-inch Wide Flange
item 20 Proform Wedge-Locking Header Bolts Fits GM LS Engines with 3/8-inch Wide Flange
C $82.47
+C $22.82 shipping
listings for this product

Ratings and Reviews

Learn more
5.0
2 product ratings
  • 2 users rated this 5 out of 5 stars
  • 0 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 0 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

  • by simenad
    Jul 15, 2019

    Nice product even though they were pictured in black but sent polished.

    Verified purchase: YesCondition: New

  • by acun4233
    Aug 30, 2025

    Excellent product!

    Excellent product!

    Verified purchase: YesCondition: New

Best Selling in Manifolds & Headers

You may also like