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COMP Cams Race Extreme 1.660" OD Triple Spring; 2.050" Installed Height; 1 Spring

Part # 947-1SKU COM947-1

Universal fit

Specifications
BrandCOMP Cams
Part typeEngine Valve Spring
Amazon ASINB00062YH7Y
C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for On-Road Vehicles?Yes
C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?Yes, but must be a race/competition only vehicle.
C.A.R.B. Exemption ReasonNo impact on pollution output of vehicle.
Coil Bind Height1.145 in
Compatible .570" Guide Diameter Spring Seats4786-1
Compatible Retainer739-1
Compatible Shims4756
Compatible Spring Cup (O.D. Locator)4708-1
DamperNo
Inner Spring Inside Diameter0.863/0.627 in
Number of Springs3
Outer Spring Inside Diameter1.196 in
Outer Spring Outside Diameter1.66 in
Seat Height2.05 in
Seat Pressure304 PSI
Spring Rate681
Valve Spring SeriesRace Extreme
UPC / GTIN00036584280347

Description

Triple Valve Springs from COMP Cams deliver maximum strength, durability and valve train stability. Engineered from Super Clean wire and subjected to extensive quality control measures, the triple spring design creates a stronger valve spring that can easily handle the increased lift and extreme demands found in aggressive applications. COMP Cams Triple Valve Springs exceed the expectations of today's engine builders and racers.