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Manley Performance

Manley Performance

Manley NexTek Valve Spring and Retainer Kits 26382538KS Retainer, NexTek, Dual, 8mm Stem Diameter, 7 Degree Lock, 1.311 in. O.D., Kit

SKU: MAN26382538KS

Valve Springs
Manley NexTek Valve Spring and Retainer Kits 26382538KS Retainer, NexTek, Dual, 8mm Stem Diameter, 7 Degree Lock, 1.311 in. O.D., Kit
Manley Performance

Manley Performance

Manley NexTek Valve Spring and Retainer Kits 26382538KS Retainer, NexTek, Dual, 8mm Stem Diameter, 7 Degree Lock, 1.311 in. O.D., Kit

SKU: MAN26382538KS

Valve Springs
A$1,273.95
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.
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Description

Manley NexTek valve spring and retainer kits are designed and manufactured for optimum consistency, run after run, lap after lap. They are manufactured from super clean high-tensile chrome silicon steel that has been shot peened to MIL specs for maximum fatigue life. Proven to have less load loss than many other springs, they exhibit superior fatigue life and enhance valvetrain stability--everything that counts in winning races!

Part Type

Valve Springs

Data: v4.2 - Upd: 2026-10-14 10:03:30

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
26382538KS
Product Attributes - Part Type
Valve Springs
Product Attributes - Product Line
Manley NexTek Valve Spring and Retainer Kits
Product Attributes - UPC
807298102306
Product Attributes - Valve Spring Style
Conical
Product Attributes - Number of Springs Per Valve
Single
Product Attributes - Maximum Valve Lift (in.)
0.650 in.
Product Attributes - Retainers Included
Yes
Product Attributes - Retainer Material
Titanium
Product Attributes - Outside Diameter of Outer Spring (in.)
1.311 in.
Product Attributes - Coil Bind Height (in.)
1.100 in.
Product Attributes - Damper Spring Included
No
Product Attributes - Spring Rate (lbs./in.)
353 lbs./in.
Product Attributes - Inside Diameter of Outer Spring (in.)
0.650 in.
Product Attributes - Locks Included
Yes
Product Attributes - Lock Material
Steel
Product Attributes - Lock Groove Quantity
1-groove
Product Attributes - Lock Style
7 degree
Product Attributes - Valve Stem Seals Included
Yes
Product Attributes - Valve Springs Coated
No
Product Attributes - Valve Stem Diameter (in.)
0.314 in.
Product Attributes - Valve Stem Diameter (mm)
8.00mm
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold as a kit.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man26382538KS
SFX Item ID 4934246
Supplier Item Code 4934246
Manufacturer SKU 26382538KS
Manufacturer UPC 807298102306
Alternative References 8mm

Compatibility

Application Data
  • MakeCHEVROLET
    Beginning Year1997
    Ending Year2004
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size5.7L/350
    Installed Height (in.)1.800 in.
    Seat Pressure at Installed Height (lbs.)150 lbs.
    Open Height (in.)(application)1.150
    Open Pressure (lbs.)375 lbs.
  • MakeCHEVROLET
    Beginning Year1999
    Ending Year2014
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size5.3L/325
    Installed Height (in.)1.800 in.
    Seat Pressure at Installed Height (lbs.)150 lbs.
    Open Height (in.)(application)1.150
    Open Pressure (lbs.)375 lbs.
  • MakeCHEVROLET
    Beginning Year1999
    Ending Year2017
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size4.8L/294
    Installed Height (in.)1.800 in.
    Seat Pressure at Installed Height (lbs.)150 lbs.
    Open Height (in.)(application)1.150
    Open Pressure (lbs.)375 lbs.
  • MakeCHEVROLET
    Beginning Year1999
    Ending Year2019
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
    Installed Height (in.)1.800 in.
    Seat Pressure at Installed Height (lbs.)150 lbs.
    Open Height (in.)(application)1.150
    Open Pressure (lbs.)375 lbs.
  • MakeCHEVROLET
    Beginning Year2006
    Ending Year2015
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size7.0L/427
    Installed Height (in.)1.800 in.
    Seat Pressure at Installed Height (lbs.)150 lbs.
    Open Height (in.)(application)1.150
    Open Pressure (lbs.)375 lbs.
  • MakeCHEVROLET
    Beginning Year2008
    Ending Year2017
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376
    Installed Height (in.)1.800 in.
    Seat Pressure at Installed Height (lbs.)150 lbs.
    Open Height (in.)(application)1.150
    Open Pressure (lbs.)375 lbs.

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