This is a SET of Rebuilt OE Stock 6.0L LQ4 / LQ9 Cylinder Heads Assemblies.

* Part # : 317 , 12562319 , 12562317
* Description : Stock 6.0L LQ4 / LQ9 LS Series Cylinder Head Assembly.
* Specs : Combustion Chamber Volume: 70.03cc
Intake Port Volume: 210cc
Exhaust Port Volume: 75cc
Intake Valve Diameter: 2.00 inches
Exhaust Valve Diameter: 1.55 inches
* Accessories : Rocker Arms Included are in "Good" Used Condition
Remanufacturing Process Includes:
- Complete disassembly and thorough cleaning via hot tank & pressure tested to confirm casting integrity

- New valve seats installed as necessary

- New valve stem seals installed on all our heads & all valve guides are replaced with new ones as necessary.

- Valve job Performed with all required angles & vacuum tested seals to ensure perfect compression.

- PCD milled to ensure a super smooth finish. (PCD stands for Polycrystalline Diamond, and is best for aluminum heads).

- CBN milled to ensure a super smooth finish. (CBN stands for Cubic Boron Nitride and is best for cast-iron heads).

- All necessary parts are cleaned and inspected before final assembly to meet AERA specifications
***JJ Original Equipment 90-day (Unlimited Miles) Remanufactured Cylinder Head Warranty***