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Header Bolts, 3/8-16 x 1 Inch, Set/12

Many Engines, 1.36" Overall Length, Hex Wrench Type

Overall Length: 1.36"

Under Head Length: 1"

Thread Pitch: 3/8"-16

Wrench Type: Hex

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Hooker 4901HKR Competition Header, Painted

326, 350, 389, 400, 421, 428, 455, Temporary Paint

Ships Free

Header Tube Type: Full-length

Finish: Temporary Paint

Flange Style: D Port

Primary Tube Diameter: 1-5/8"

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Hooker 4901-1HKR Competition Header, Ceramic Coated

326, 350, 389, 400, 421, 428, 455, D Port Flange Style

Ships Free

Header Tube Type: Full-length

Finish: Silver ceramic coated

Flange Style: D Port

Primary Tube Diameter: 1-5/8"

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Hooker 4108-1HKR Super Competition Header, Ceramic Coated

326, 350, 389, 400, 421, 428, 455, D Port Flange Style

Ships Free

Header Tube Type: Full-length

Finish: Silver ceramic coated

Flange Style: D Port

Primary Tube Diameter: 1-3/4"

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Speedway Allen Head Header Bolts, 3/8-16 x 3/4 Inch, Set/12

Many Engines, 1.12" Overall Length, Allen Wrench Type

Overall Length: 1.12"

Under Head Length: 0.75"

Thread Pitch: 3/8"-16

Wrench Type: Allen

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Mr Gasket 2230G HeadLock Locking Header Bolts, SBC

$31.99
$33.97

Pontiac V8, Chevy Small Block V8, Chrysler Big Block V8

On Sale
Video Available

Thread Pitch: 3/8"-16

Material Type: Stainless Steel

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Stainless Steel Allen Head Header Bolts, 3/8-16 x 3/4, Set/12

Many Engines, 1.12" Overall Length, Allen Wrench Type

Overall Length: 1.12"

Under Head Length: 0.75"

Thread Pitch: 3/8"-16

Wrench Type: Allen

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Hooker 4202HKR Super Competition Header, Painted

326, 350, 389, 400, 421, 428, 455, Temporary Paint

Ships Free

Header Tube Type: Full-length

Finish: Temporary Paint

Flange Style: Round Port

Primary Tube Diameter: 2"

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Hooker 4902-1HKR Competition Header, Ceramic Coated

326, 350, 389, 400, 421, 428, 455, D Port Flange Style

Ships Free

Header Tube Type: Full-length

Finish: Silver ceramic coated

Flange Style: D Port

Primary Tube Diameter: 1-5/8"

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King Chrome Hex Header Bolts, 3/8-16 x 3/4 Inch, Set/12

Many Engines, 1.03" Overall Length, Hex Wrench Type

Overall Length: 1.03"

Under Head Length: 0.75"

Thread Pitch: 3/8"-16

Wrench Type: Hex

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Flowtech 11170FLT Long Tube Header, 1.625 Inch Tube Size

Pontiac V8, Oldsmobile V8, Long Tube Header Tube Type

Ships Free

Header Tube Type: Long Tube

Finish: Painted

Flange Style: D Port

Primary Tube Diameter: 1-5/8"

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Hooker 4108HKR Super Competition Header, Painted

326, 350, 389, 400, 421, 428, 455, Temporary Paint

Ships Free

Header Tube Type: Full-length

Finish: Temporary Paint

Flange Style: D Port

Primary Tube Diameter: 1-3/4"

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King Chrome Allen Header Bolts, 3/8-16 x 3/4 Inch, Set/12

Many Engines, 1.12" Overall Length, Allen Wrench Type

Overall Length: 1.12"

Under Head Length: 0.75"

Thread Pitch: 3/8"-16

Wrench Type: Allen

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Patriot Exhaust H7882 Header Flange, Pontiac 326-455

$31.99
$47.71

326, 350, 389, 400, 421, 428, 455, Oval Port Style

On Sale

Port Style: Oval

Port Height: 1.875"

Port Width: 1.5"

Hardware Included: Yes

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Mr Gasket 6312 Header Stud Kit, 3/8-16 x 1.5 Inch

$33.99
$36.16

Pontiac V8, Chevy Small Block V8, Chrysler Big Block V8

On Sale

Overall Length: 1.5"

Thread Pitch: 3/8"-16

Thread Length: 1.5"

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Mr Gasket 7171MRG Exhaust Gaskets, Pontiac, Copper-Seal

$39.99
$42.12

326, 350, 389, 400, 421, 428, 455, D-port Port Style

On Sale

Gasket Material: Copper

Port Style: D-port

Port Height: 2"

Port Width: 1.55"

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Longacre 52-35600 12-Point Header Bolts, SBC, Set of 12

Many Engines, 3/8"-16 Thread Pitch, Steel

Thread Pitch: 3/8"-16

Wrench Type: 12 Point

Material Type: Steel

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Mr Gasket 2210G Stainless Steel Header Bolts, 3/8-16 x 3/4 Inch

$27.99
$29.14

Pontiac V8, Chevy Small Block V8, Chrysler Big Block V8

On Sale

Under Head Length: 0.75"

Thread Pitch: 3/8"-16

Material Type: Stainless Steel

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Mr Gasket 5921 Exhaust Gaskets, Pontiac, Ultra-Seal

$23.99
$25.64

326, 350, 389, 400, 421, 428, 455, D-port Port Style

On Sale

Gasket Material: Steel core laminate

Port Style: D-port

Port Height: 2"

Port Width: 1.55"

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Spectre 46723 Header Bolts, Gold Iridated, Steel, Set of 12

Many Engines, 0.875" Under Head Length, Steel

Under Head Length: 0.875"

Thread Pitch: 3/8"-16

Material Type: Steel

Finish: Gold Iridited

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Mr Gasket 917A 100 Header Bolts

$75.99
$81.68

Many Engines, 1" Under Head Length, Hex Wrench Type

On Sale

Under Head Length: 1"

Thread Pitch: 3/8"-16

Wrench Type: Hex

Material Type: Steel

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Patriot Exhaust H7973 Zinc Plated Header Bolts, 3/8-16 x 1, 12

$8.99
$10.39

Many Engines, 1" Under Head Length, Steel, Zinc

On Sale

Under Head Length: 1"

Thread Pitch: 3/8"-16

Material Type: Steel

Finish: Zinc

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Spectre 46703 Header Bolts, Cadmium Plated, 3/8-16 Thread, Set of 12

Many Engines, 3/8"-16 Thread Pitch, Steel

Thread Pitch: 3/8"-16

Material Type: Steel

Finish: Cadmium Plated

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Mr Gasket 5920 Exhaust Gaskets, Pontiac, 1.46 x 1.93 Inch

$29.99
$31.49

326, 350, 389, 400, 421, 428, 455, 1.93" Port Height

On Sale

Gasket Material: Steel core laminate

Port Style: Open center port

Port Height: 1.93"

Port Width: 1.46"

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Patriot Exhaust H7970 Zinc Plated Header Bolts, 3/8-16 x 3/4, 12

Many Engines, 0.75" Under Head Length, Steel, Zinc

On Sale

Under Head Length: 0.75"

Thread Pitch: 3/8"-16

Material Type: Steel

Finish: Zinc

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