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Manley Extreme Duty Series Stainless Steel Valves 11739-8 Valve, Intake, Steel, 1.900 in. Diameter, 0.342 in. Stem, 5.522 in. Length, Chevrolet, Set of 8

SKU: MAN11739-8

Valves

Manley Extreme Duty Series Stainless Steel Valves 11739-8 Valve, Intake, Steel, 1.900 in. Diameter, 0.342 in. Stem, 5.522 in. Length, Chevrolet, Set of 8

SKU: MAN11739-8

Valves
A$1,000.89
Limited Availability from MFR Limited stock available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical orders of this part. This item is not held in our own warehouse, and availability and release timing may vary depending on manufacturer stock movements and processing at the time of ordering.

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Description

Valve - Exhaust

Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted carburetor circle track competitors, these valves are your ticket to unparalleled performance.

Additional Information

Manley Valve - Exhaust, Valve-Extreme Duty 1.900,+100

Part Type

Engine Exhaust Valve

Data: v4.2 - Upd: 2026-11-09 03:43:41

Features

  • Built to Last: Featuring chrome stems and hard tips for exceptional longevity and wear resistance.
  • Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.
  • Optimized Performance: Swirl polished under head areas and fully machined combustion faces improve airflow and combustion efficiency.
  • XH-432 XtremeAlloy: The hallmark of excellence in exhaust valve material construction.

Data: v2 - Desc: v4.2 - Upd: 2026-11-08 05:32:28

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Manley Performance, Manley
StreetFX SKU man11739-8
SFX Item ID 4933577
Accounting SKU man-11739-8
Manufacturer SKU 11739-8
Manufacturer UPC 807298051864
Alternative References 11739-8, MAN-11739-8

Valve, Intake, Stainless Steel, 1.900 in. Diameter, 0.342 in. Stem, 5.522 in. Length, Chevrolet, Set of 8

Manley Extreme Duty Series performance steel valves are a great choice for supercharged, alcohol-burning, or high-revving engines. These engines generate a lot of heat and require special valves that can handle that kind of punishment. All valves are made from the best stainless steel available, with chrome stems and hardened valve tips. Extreme Duty Series valves are swirl-polished and fully machined and available with either undercut heads or straight stems.

Product Attributes
BrandManley
Manufacturer's Part Number11739-8
Part TypeValves
Product LineManley Extreme Duty Series Stainless Steel Valves
UPC807298051864
Valve PositionIntake
Intake Valve Head Diameter (in.)1.900 in.
Intake Valve Head Diameter (mm)48.260mm
Intake Valve Stem Diameter (in.)0.342 in.
Intake Valve Stem Diameter (mm)8.69mm
Intake Overall Valve Length (in.)5.522 in.
Intake Overall Valve Length (mm)140.259mm
Undercut StemNo
Swirl-PolishedYes
Valve Tip Length (in.)0.250 in.
Valve Tip Length (mm)6.350mm
Valve MaterialXH-432 Xtreme alloy
Lock Groove Quantity1-groove
Lock Groove StyleConventional
Approximate Weight (g)136
Valve Head Style9 degree dish
Valve Seat Width (in.)0.085 in.
QuantitySold as a set of 8.
NotesUnderhead angle/radius 15 degree x .500 in. Margin 0.075 in.

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