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Manley NexTek Valve Springs 221434-1 Spring, NexTek, Single Beehive, 1.126 in. O.D., 0.750 in. O.D., 0.880 in. Coil Bind Height, 330 lbs./in. Spring Rate, Each

SKU: MAN221434-1

Valve Springs

Manley NexTek Valve Springs 221434-1 Spring, NexTek, Single Beehive, 1.126 in. O.D., 0.750 in. O.D., 0.880 in. Coil Bind Height, 330 lbs./in. Spring Rate, Each

SKU: MAN221434-1

Valve Springs
A$52.36
Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.
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Description

From drag strips to short track and endurance circuits, the Manley NexTek® series is engineered for serious racers. NexTek® springs resist pressure loss and valve-train degradation even in the most demanding race conditions. That means more consistent spring force deep into a run, reduced valve bounce, and improved overall stability for high-RPM performance. Built to outperform and outlast in real-world competition.

Part Type

Engine Valve Spring

Data: v4.2 - Upd: 2026-10-14 16:55:13

Features

  • Manufactured from “super clean” Hi-Tensile Chrome Silicon steel
  • Proprietary multi-step heat treating minimizes load loss
  • Shot-peened to MIL spec for max fatigue life
  • Tightly controlled open-end flatness reduces valve stem side loading
  • Tip thickness designed to eliminate overload breakage

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
221434-1
Product Attributes - Part Type
Valve Springs
Product Attributes - Product Line
Manley NexTek Valve Springs
Product Attributes - UPC
807298023458
Product Attributes - Valve Spring Style
Beehive
Product Attributes - Number of Springs Per Valve
Single
Product Attributes - Maximum Valve Lift (in.)
0.525 in.
Product Attributes - Retainers Included
No
Product Attributes - Outside Diameter of Outer Spring (in.)
1.126 in.
Product Attributes - Coil Bind Height (in.)
0.880 in.
Product Attributes - Damper Spring Included
No
Product Attributes - Spring Rate (lbs./in.)
330 lbs./in.
Product Attributes - Inside Diameter of Outer Spring (in.)
0.750 in.
Product Attributes - Locks Included
No
Product Attributes - Valve Stem Seals Included
No
Product Attributes - Valve Springs Coated
No
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man221434-1
SFX Item ID 4930217
Supplier Item Code 4930217
Manufacturer SKU 221434-1
Manufacturer UPC 807298023458

Compatibility

Application Data
  • MakeFORD
    Beginning Year1996
    Ending Year1999
    Engine TypeV8
    Engine FamilyFord modular V8
    Engine Size4.6L/281
    Installed Height (in.)1.420 in.
    Seat Pressure at Installed Height (lbs.)95 lbs.
    Open Height (in.)(application)0.920
    Open Pressure (lbs.)260 lbs.
  • MakeFORD
    Beginning Year2000
    Ending Year2000
    Engine TypeV8
    Engine FamilyFord modular V8
    Engine Size5.4L/330
    Installed Height (in.)1.420 in.
    Seat Pressure at Installed Height (lbs.)95 lbs.
    Open Height (in.)(application)0.920
    Open Pressure (lbs.)260 lbs.
  • MakeFORD
    Beginning Year2001
    Ending Year2001
    Engine TypeV8
    Engine FamilyFord modular V8
    Engine Size4.6L/281
    Installed Height (in.)1.420 in.
    Seat Pressure at Installed Height (lbs.)95 lbs.
    Open Height (in.)(application)0.920
    Open Pressure (lbs.)260 lbs.
  • MakeFORD
    Beginning Year2003
    Ending Year2004
    Engine TypeV8
    Engine FamilyFord modular V8
    Engine Size4.6L/281
    Installed Height (in.)1.420 in.
    Seat Pressure at Installed Height (lbs.)95 lbs.
    Open Height (in.)(application)0.920
    Open Pressure (lbs.)260 lbs.
  • MakeFORD
    Beginning Year2005
    Ending Year2012
    Engine TypeV8
    Engine FamilyFord modular V8
    Engine Size5.4L/330
    Installed Height (in.)1.420 in.
    Seat Pressure at Installed Height (lbs.)95 lbs.
    Open Height (in.)(application)0.920
    Open Pressure (lbs.)260 lbs.

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