Skip to main content
Skip to main content
List Menu

User account menu

  • Log in
Home
  • Home
  • Shop All
  • Brands
  • Categories
    • Performance
      • Exhaust
    • Tools
    • Brakes
      • Brake Fluid
      • Brake Master Cylinder
      • Brake Proportioning Valve
      • Brake Rotors
      • Brake Pads
      • Brake Caliper Seal Kit
    • Tire & Wheels
      • Tire & Wheel Accessories
    • Air & Fuel
      • Fuel
  • Contact Us
Home

Main navigation

  • Home
  • Shop All
  • Brands
  • Categories
  • Contact Us

Social

  • Catalog
  • Home

Filter Results

Stock Diameter Performance Dual with Damper Valve Spring & Retainer Kit; 1.514 10 Degree Howards Cams 98636-K12
Quick View Eye-fill
Stock Diameter Performance Dual with Damper Valve Spring & Retainer Kit; 1.514 7-10 Degree Howards Cams
$207.20
View
Stock Diameter Performance Single with Damper Valve Spring & Retainer Kit; 1.445 7 Degree Howards Cams 98412-K11
Quick View Eye-fill
Stock Diameter Performance Single with Damper Valve Spring & Retainer Kit 1.445-1.550 7 Degree Howards Cams
$181.27
View
Stock Diameter Performance Dual with Damper Valve Springs; 1.437 Howards Cams 98432
Quick View Eye-fill
Stock Diameter Performance Dual with Damper Valve Springs 1.437-1.514 Howards Cams
$111.40
View
Pro - Series H - 11 Tool Steel Triple Valve Springs; 1.625 Howards Cams 98751
Quick View Eye-fill
Pro - Series H - 11 Tool Steel Triple Valve Springs 1.625 Howards Cams
$482.17
View
Pro - Alloy Mechanical Roller Dual Valve Springs; 1.550 Howards Cams 98643
Quick View Eye-fill
Pro - Alloy Mechanical Roller Dual Valve Springs 1.550-1.640 Howards Cams
$245.69
View
Performance Single with Damper Valve Springs; 1.240 Howards Cams 98111
Quick View Eye-fill
Performance Single with Damper Valve Springs 1.240-1.525 Howards Cams
$61.53
View
Pro - Alloy Mechanical Roller Dual with Damper Valve Springs; 1.575 Howards Cams 98885
Quick View Eye-fill
Pro - Alloy Mechanical Roller Dual with Damper Valve Springs 1.575-1.625 Howards Cams
$340.51
View
Performance Dual with Damper Valve Springs; 1.435 Howards Cams 98437
Quick View Eye-fill
Performance Dual with Damper Valve Springs 1.435 Howards Cams
$134.86
View
Valve Spring Shims; 1.640 .015 Howards Cams 96240-15
Quick View Eye-fill
Valve Spring Shims; 1.640 .015-.60Howards Cams
$15.44
View
Valve Stem Seals; Posi-Stop 11/32 .500 Howards Cams 93370
Quick View Eye-fill
Valve Stem Seals Posi-Stop 11/32 .500-.531 Howards Cams
$14.83
View
Valve Spring Shims; 1.480 .015 Howards Cams 96225-15
Quick View Eye-fill
Valve Spring Shims; 1.480 .015-.060 Howards Cams
$9.10
View
Valve Spring Shims; 1.437 .030 Howards Cams 96215-30
Quick View Eye-fill
Valve Spring Shims; 1.437 .015-.060 Howards Cams
$9.10
View
Valve Spring Seat Cutter; 1.440 Howards Cams 92065
Quick View Eye-fill
Valve Spring Seat Cutter; 1.440-1.740 Howards Cams
$105.89
View
Valve Spring Shims; 1.250 .015 Howards Cams 96205-15
Quick View Eye-fill
Valve Spring Shims; 1.250 .015-.060 Howards Cams
$9.10
View
Valve Spring Shims; 1.500 .015 Howards Cams 96230-15
Quick View Eye-fill
Valve Spring Shims; 1.500 .015-.060 Howards Cams
$9.10
View
Valve Stem Seals; Posi-Stop 8mm .500 Howards Cams 93380
Quick View Eye-fill
Valve Stem Seals Posi-Stop 8mm .500-.531 Howards Cams
$25.98
View
Ultimate Duty Valve Stem Seals; Posi-Stop 11/32 .500 Howards Cams 93310-1
Quick View Eye-fill
Ultimate Duty Valve Stem Seals Posi-Stop 11/32 .500-.531 Howards Cams
$0.68
View
Ultimate Duty Valve Stem Seals; PC 3/8 .531 Howards Cams 93320-1000
Quick View Eye-fill
Ultimate Duty Valve Stem Seals; PC 3/8 .531 Howards Cams
$367.58
View

Pagination

  • Current page 1
  • Page 2
  • Page 3
  • Page 4
  • Page 5
  • Page 6
  • Page 7
  • Page 8
  • Page 9
  • …
  • Next page ››
  • Last page Last »

Brand

  • (-) Howards Cams

Category

  • Engine and Components
    • (-) Engine Valve
      • Engine Intake Valve
      • Engine Valve Guide and Seat Refacing Machine
      • Engine Valve Guide Seal
      • Engine Valve Lash Cap
      • Engine Valve Lifter
      • Engine Valve Spring
      • Engine Valve Spring Kit
      • Engine Valve Spring Retainer
      • Engine Valve Spring Retainer Keeper
      • Engine Valve Spring Seat
      • Engine Valve Spring Shim
  • Performance
Filters

Brand

  • (-) Howards Cams

Category

  • Engine and Components
    • (-) Engine Valve
      • Engine Intake Valve
      • Engine Valve Guide and Seat Refacing Machine
      • Engine Valve Guide Seal
      • Engine Valve Lash Cap
      • Engine Valve Lifter
      • Engine Valve Spring
      • Engine Valve Spring Kit
      • Engine Valve Spring Retainer
      • Engine Valve Spring Retainer Keeper
      • Engine Valve Spring Seat
      • Engine Valve Spring Shim
  • Performance

Company

  • Shop Brands
  • Shop Categories
  • About Us
  • Contact Us
  • Customer Showcase
  • Privacy Policy
  • Shipping Policy
  • Terms & Services

 

aer

ps

 

Contact Us

Text

Let's Chat

 508-808-8627
 Support@opmustang.com 
 

 

We're Open!

Store Hours

Monday to Friday: 9:00 AM - 6:00 PM
Saturday: 9:00 AM - 4:00 PM
Sunday: Closed

© 2026 Optimum Performance

Powered by Complete Web Solutions