Manley Severe Duty Pro Flo Series Stainless Steel Valves 11703-1

Name: Manley Severe Duty Pro Flo Series Stainless Steel Valves
Brand: Manley
SKU: MAN-11703-1
Price: 21.59 USD
Availability: InStock
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Part Number: MAN-11703-1

$21.59

$23.99

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Manley Severe Duty Pro Flo Series Stainless Steel Valves

Valves, Exhaust, XH-428 Stainless Steel, 1.600 in. Diameter, 0.342 in. Stem, 5.255 in. Length, Set of 8
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Manley Severe Duty Pro Flo Series Stainless Steel Valves 11703-1

MAN-11703-1

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Part Number: MAN-11703-1

Estimated Ship Date: Nov 11, 2026

$21.59

$23.99

(Save $2.40)

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Overview

Applications

Q&A

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Overview

Brand:

Manley

Manufacturer's Part Number:

11703-1

Part Type:

Valves

Product Line:

Manley Severe Duty Pro Flo Series Stainless Steel Valves

Summit Racing Part Number:

MAN-11703-1

Item Number:

1032060

UPC:

807298051550

Valve Position:

Exhaust

Exhaust Valve Head Diameter (in.):

1.600 in.

Exhaust Valve Head Diameter (mm):

40.640mm

Exhaust Valve Stem Diameter (in.):

0.342 in.

Exhaust Valve Stem Diameter (mm):

8.69mm

Exhaust Overall Valve Length (in.):

5.255 in.

Exhaust Overall Valve Length (mm):

133.477mm

Undercut Stem:

Yes

Swirl-Polished:

Yes

Valve Tip Length (in.):

0.290 in.

Valve Tip Length (mm):

7.366mm

Valve Material:

XH-428 stainless steel

Lock Groove Quantity:

1-groove

Lock Groove Style:

Conventional

Approximate Weight (g):

111

Valve Head Style:

17 degree dish

Valve Seat Width (in.):

0.080 in.

Quantity:

Sold individually.

Notes:

Late model stock head with part number P5249769.

Manley Severe Duty Pro Flo Series Stainless Steel Valves

Manley Severe Duty Pro Flo Series intake and exhaust valves are a great choice for your high performance or race engine. All valves are made from stainless steel (intakes are NK-844; exhausts are XH-428) with chrome stems and hardened valve tips. Severe Duty series valves are fully machined and swirl polished, and offer improved flow with undercut "Pro Flo" stems. Many size options are available, for applications from 1955 and up.

Applications