Unrivaled Customer Service
And Expert Tech Advice!  
Same Day Shipping Before 11 PM ET
My Cart
Shop By Vehicle
Shop By
Close Menu
Shop By Vehicle
Top Categories
All Categories

Top Categories

All Categories

Free Catalog
E-Mail Signup
My Account
Track Order
Gift Certificates

Dart Assembled Platinum Pro 1 Aluminum Cylinder Head Straight Plug

Dart 11821143P


jegs shipping
FREE Shipping
Estimated to ship directly from the manufacturer on 08/07/18
Easy Returns
Easy Returns
Lowest Price Guarantee
Lowest Price Guarantee
Dart Assembled Platinum Pro 1 Aluminum Cylinder Head Straight Plug $921.14
Assembled Platinum Pro 1 Aluminum Cylinder Head
  • Straight Plug
  • Valves: 2.08'' Intake, 1.60'' Exhaust
  • Dual Valve Springs: 1.550''

  • Specifications:

    Manufacturer's Part Number:

    As a direct result of Dart's wet-flow testing, the intake seats of these cylinder heads have five distinct angles. Each of the angles provides a shear point for the fuel to go into suspension before it enters a chamber. The heads also have back-cut valves, which make a big difference in how fuel is conditioned before entering combustion chambers. Result: the engine pulls more fuel and creates more power. Spark plugs are located as close to top center of the combustion chambers as possible. This shortens the flame's travel distance and produces a more uniform pressure rise in the cylinder to push pistons down.

  • Hardened Exhaust Seats
  • Multi-Angle Intake Seats
  • Dual Exhaust Bolt Pattern
  • C355-T61 Aerospace Alloy
  • Angled or Straight Spark Plugs
  • Manganese Bronze Valve Guides
  • Heart-Shaped Combustion Chambers
  • Sold Individually (Bare or Assembled)
  • Bolt-On Compatibility with Standard Valve Angle & Spacing

    Click the image for more Pro 1 details

  • Some parts are not legal for use in California or other states with similar laws / regulations