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Howards Cams Electro Polished Pro-Alloy Mechanical Roller Valve Springs 98739-1
Part Number: HRS-98739-1
Howards Cams Electro Polished Pro-Alloy Mechanical Roller Valve Springs
Valve Springs, Dual, 1.640 in. Outside Diameter, 645 lbs./in. Rate, 1.070 in. Coil Bind Height, Polished, Each
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Estimated Ship Date: Dec 29, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
98739-1
Part Type:
Product Line:
Summit Racing Part Number:
HRS-98739-1
UPC:
840793126231
Valve Spring Style:
Standard
Number of Springs Per Valve:
Dual
Maximum Valve Lift (in.):
0.880 in.
Retainers Included:
No
Outside Diameter of Outer Spring (in.):
1.640 in.
Coil Bind Height (in.):
1.070 in.
Damper Spring Included:
No
Spring Rate (lbs./in.):
645 lbs./in.
Inside Diameter of Outer Spring (in.):
1.210 in.
Inside Diameter of Inner Spring (in.):
0.860 in.
Locks Included:
No
Valve Stem Seals Included:
No
Valve Springs Coated:
No
Quantity:
Sold individually.
Installed Height (in.):
2.000 in.
Seat Pressure at Installed Height (lbs.):
250 lbs.
Open Height (in.)(application):
1.150
Open Pressure (lbs.):
800 lbs.
Remanufactured:
No
Howards Cams Electro Polished Pro-Alloy Mechanical Roller Valve Springs
When only the best will do, depend on these Howards Cams Electro Polished Pro-Alloy mechanical roller valve springs! Howards Cams took their state-of-the-art Pro-Alloy roller valve springs one step further with electro polishing, which enhances the material even further. By reducing localized stress areas, these springs offer even greater life expectancy.
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