Providing the best sealing properties and spring clearance, viton valve seals are an excellent choice in performance applications. The 521 seals have a .545" OD and fit applications with 3/8" valves and .500" OD guides.
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Sorry we do not have fitment information available for this part number. Contact us for any fitment questions. | |||||
IN STOCK Supertech VS-N6I-12Supertech Valve Stem Seals Supertech SR20DE/SR20DET/RB26 6mm Intake Valve Stem Seal - Set of 12 $33.65
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IN STOCK Ferrea VS1008Ferrea Valve Stem Seals - Sets Ferrea Toyota 2JZGE/2JZGTE 6mm Viton Hi-Temp Exhaust Valve Stem Seal - Set of 12 $53.02
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IN STOCK Ferrea VS1014Ferrea Valve Stem Seals - Sets Ferrea Nissan VQ35 6mm Viton Hi-Temp Intake Valve Stem Seal - Set of 12 $51.83
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IN STOCK Supertech VS-H5.5I-8Supertech Valve Stem Seals Supertech Honda 5.5mm Polyacrylic Intake Valve Stem Seal - Set of 8 $30.89
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IN STOCK Supertech VS-H6.6E-8Supertech Valve Stem Seals Supertech Honda LS / Mitsubishi (Reduced Dia) 6.6mm Viton Exhaust Valve Stem Seal - Set of 8 $33.33
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IN STOCK Supertech VS-VBM6E-8Supertech Valve Stem Seals Supertech VW/Audi / BMW 6mm Viton Exhaust Valve Stem Seal - Set of 8 $33.33
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IN STOCK Supertech VS-VW7E-8Supertech Valve Stem Seals Supertech VW/Audi 7mm Viton Exhaust Valve Stem Seal - Set of 8 $32.81
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IN STOCK GSC Power Division 1090GSC Power Division Valve Stem Seal Sets GSC P-D Toyota Supra/BMW B58/N54/S55/S58 Viton Intake Valve Stem Seals - Set of 12 $50.91
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For more information on COMP Cams part number 521-8, you can visit the official COMP Cams website.