Street. Track. Everything between.
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

Manley NexTek Valve Springs 221448P-1 Spring, Triple, 1.677 in. Outside Diameter, 733 lbs./in. Rate, 1.142 in. Coil Bind Height, Each

SKU: MAN221448P-1

Valve Springs

Manley NexTek Valve Springs 221448P-1 Spring, Triple, 1.677 in. Outside Diameter, 733 lbs./in. Rate, 1.142 in. Coil Bind Height, Each

SKU: MAN221448P-1

Valve Springs
A$135.24
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
View cart 0
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

These Manley NexTek valve springs are better-designed valve springs using state-of-the-art machinery for purpose-built racing engines. They're manufactured from super-clean, high-tensile chrome silicon steel and are shot-peened to MIL specs for maximum fatigue life. They feature a proprietary, multi-step heat-treating that minimizes load loss and have computer-aided modeling to minimize valve bounce and valve gear separation. The Manley NexTek valve springs are smaller diameter and lightweight, allowing engines to rev higher faster. They have an extended tip thickness designed to eliminate overload breakage, and their tightly controlled open-end flatness reduces valve stem side loading.

Part Type

Valve Springs

Data: v4.2 - Upd: 2026-10-14 10:08:48

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
221448P-1
Product Attributes - Part Type
Valve Springs
Product Attributes - Product Line
Manley NexTek Valve Springs
Product Attributes - UPC
807298023816
Product Attributes - Valve Spring Style
Standard
Product Attributes - Number of Springs Per Valve
Triple
Product Attributes - Maximum Valve Lift (in.)
0.900 in.
Product Attributes - Retainers Included
No
Product Attributes - Outside Diameter of Outer Spring (in.)
1.677 in.
Product Attributes - Coil Bind Height (in.)
1.142 in.
Product Attributes - Damper Spring Included
No
Product Attributes - Spring Rate (lbs./in.)
733 lbs./in.
Product Attributes - Inside Diameter of Inner Spring (in.)
0.635 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.
Product Attributes - Notes
Polished.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man221448P-1
SFX Item ID 4930562
Supplier Item Code 4930562
Manufacturer SKU 221448P-1
Manufacturer UPC 807298023816

Compatibility

Application Data
  • Installed Height (in.)2.100 in.
    Seat Pressure at Installed Height (lbs.)350 lbs.
    Open Height (in.)(application)1.200
    Open Pressure (lbs.)1,010 lbs.

Loading compatibility information...

Keep shopping

More from Manley Performance