Design Engineering (DEI) Headliner 050169

Description

This new Performer cylinder head is designed as a bolt-on performance upgrade for 1987 to 2006 Jeeps with a 4.0L inline six cylinder engine. The Performer Jeep 4.0L is designed with 1991 To 2006 4.0L intake port locations and must be used with 1991 to 2006 intake manifold. The Performer Jeep 4.0L is designed with 1991 To 1998 4.0L exhaust port locations and must be used with 1991 To 1998 factory header or aftermarket exhaust header. This cylinder head will also fit 1976 To 1990 AMC 4.2L engines with no modification to the water jacket and the appropriate intake manifold and header combination. Performer Jeep cylinder head features all-new better flowing intake/exhaust ports along with a modern combustion chamber design and backcut and swirl polished valves. It retains the stock valve angle, pushrod length and valve cover rail height for use with factory components and off the shelf accessories. It also features larger reinforced rocker bosses for improved strength at high RPM and Heli-Coil threaded inserts in the manifold bolt holes for added strength. A 3/4 Inch deck throughout the head also promotes stiffness and durability. This cylinder head is machined to accept either distributor or coil pack ignition.

Condition : New
Engine Compatibility : Jeep L6 4.0L
Style : Assembled
Finish : Satin
Material : Aluminum
CNC-Machined : Yes
Combustion Chamber Volume (cc) : 55 Cubic Centimeter
Intake Runner Volume (CC) : 144 Cubic Centimeter
Exhaust Runner Volume (CC) : 77 Cubic Centimeter
Port Shape : Rectangular
Intake Port Location : Standard
Exhaust Port Location : Standard
Intake Valve Diameter (IN) : 1.91 Inch
Exhaust Valve Diameter (IN) : 1-1/2 Inch
Includes Valves : Yes
Spark Plug Angle : Straight
Rocker Arm Nut Thread Size : No Rocker Arm Nut
Includes Rocker Arm Studs : No
Valve Lock Type : 7 Degree
Valve Stem Seal Type : No Valve Stem Seal
Valve Guide Material : Manganese Bronze
Number Of Springs Per Valve : Single
Valve Seats Machined : No
Steam Holes Drilled : No
Machined For O-Ring : No
Includes Guideplates : No
Includes Damper Spring : No

Features

Designed As A Bolt-On Performance Upgrade For 1987 To 2006 Jeeps With A 4.0L Inline Six Cylinder Engine
Features All-New Better Flowing Intake/Exhaust Ports Along With A Modern Combustion Chamber Design And Backcut And Swirl Polished Valves
Features Larger Reinforced Rocker Bosses For Improved Strength At High RPM And Heli-Coil Threaded Inserts In The Manifold Bolt Holes For Added Strength
3/4 Inch Deck Throughout The Head Also Promotes Stiffness And Durability. This Cylinder Head Is Machined To Accept Either Distributor Or Coil Pack Ignition
Cylinder Head Is Machined To Accept Either Distributor Or Coil Pack Ignition
Limited 1 Year Warranty