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Manley 00-03 Subaru WRX (EJ20) / 04 STi Intake 36mm Stainless Race Flo Valves

SKU: MAN11138-8

Valves

MAN Race Flo Valves...

Manley 00-03 Subaru WRX (EJ20) / 04 STi Intake 36mm Stainless Race Flo Valves

SKU: MAN11138-8

Valves

MAN Race Flo Valves...

A$408.77
IN STOCK! Est Ship 3-5 days. In stock at 1 location (7 available)

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Description

Valve - Intake

Manley Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM.

Additional Information

Manley Valve - Intake, Valve-R/M SUBARU WRX 36mm

Part Type

Engine Intake Valve

Data: v4.2 - Upd: 2026-11-09 03:35:26

Features

  • Chrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity and wear resistance.
  • Recommended for Alcohol Engines: These valves are the recommended choice for exhaust valves in alcohol engines, ensuring reliable performance even in demanding conditions.
  • Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.
  • Swirl Polished and Fully Machined: The valves feature swirl polished under head areas and fully machined combustion faces to optimize airflow and combustion efficiency.
  • Variety of Shapes: Choose between Race Master (Straight Stem) and Race Flo shapes to suit your racing engine's specific requirements.

Data: v2 - Desc: v4.2 - Upd: 2026-11-08 05:26:31

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 man11138-8
SFX Item ID 4061351
Accounting SKU man-11138-8
Manufacturer SKU 11138-8
Manufacturer UPC 807298051024
Alternative References 11138-8, MAN-11138-8

Valves, Race, Intake, NK-842 Stainless Steel, 1.417 in. Diameter, 4.118 in. Length, Subaru, Set of 8

Manley Race series performance valves are a great choice for your bracket, oval track, or high performance street engine. All valves are made from stainless steel (intakes are NK-842; exhausts are XH-426) with chrome stems and hardened valve tips. In addition to being made from high-quality materials, Race series valves are swirl polished and fully machined.

Product Attributes
BrandManley
Manufacturer's Part Number11138-8
Part TypeValves
Product LineManley Race Series Stainless Steel Valves
UPC807298051024
Valve PositionIntake
Intake Valve Head Diameter (in.)1.417 in.
Intake Valve Head Diameter (mm)36.000mm
Intake Valve Stem Diameter (in.)0.235 in.
Intake Valve Stem Diameter (mm)5.97mm
Intake Overall Valve Length (in.)4.118 in.
Intake Overall Valve Length (mm)104.600mm
Undercut StemYes
Swirl-PolishedYes
Valve Tip Length (in.)0.138 in.
Valve Tip Length (mm)3.500mm
Valve MaterialNK-842 stainless steel
Lock Groove Quantity1-groove
Lock Groove StyleConventional
Valve Head Style14 degree dish
Valve Seat Width (in.)0.080 in.
QuantitySold as a set of 8.

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