This is a Pair of Rebuilt 3.6L Pair Cylinder Head Assemblies

* casting # : 12633958 / 12633959
* Description : Stock DOHC 3.6L Driver Side & Passenger Side Cylinder Head Assemblies with casting # 12633958 / 12633959
* information : driver and passenger cylinder heads
* fitment :
ATS 13-14 3.6L, California emissions, opt NU5
ATS 13-14 3.6L, Federal emissions (opt NT7)
ATS 15 3.6L
CAMARO 12-15 3.6L
CANYON 15-16 3.6L
CAPRICE 12-17 3.6L.
COLORADO 15-16 3.6L
CTS 12-13 3.6L (VIN 3, 8th digit, opt LFX)
CTS 14 Cpe, 3.6L (VIN 3, 8th digit, opt LFX)
CTS 14 Sdn, 3.6L VIN 3 (8th digit, opt LFX), California emissions (opt NU5).
CTS 14 Sdn, 3.6L VIN 3 (8th digit, opt LFX), Federal emissions (opt NT7).
CTS 14 SW, 3.6L (VIN 3, 8th digit, opt LFX)
CTS 15 Sdn, 3.6L, VIN 3 (8th digit, opt LFX).
EQUINOX 13-17 3.6L
IMPALA 12-13 California emissions, opt NU5
IMPALA 12-13 Federal emissions (opt NT7)
IMPALA 14 VIN 1 (4th digit, New Style), 3.6L (VIN 3, 8th digit, opt LFX), California emissions, opt NU5
IMPALA 14 VIN 1 (4th digit, New Style), 3.6L (VIN 3, 8th digit, opt LFX), Federal emissions (opt NT7)
IMPALA 14 VIN W (4th digit, Limited), California emissions, opt NU5
IMPALA 14 VIN W (4th digit, Limited), Federal emissions (opt NT7)
IMPALA 15-16 VIN 1 (4th digit, New Style), 3.6L, VIN 3 (8th digit, opt LFX)
IMPALA 15-16 VIN W (4th digit, Limited)
IMPALA 17-19 3.6L (VIN 3, 8th digit, opt LFX)
IMPALA 20 (3.6L, VIN 3, 8th digit, opt LFX).
LACROSSE 12 3.6L
LACROSSE 13-14 3.6L, California emissions, opt NU5
LACROSSE 13-14 3.6L, Federal emissions (opt NT7)
LACROSSE 15-16 3.6L,
SRX 12-16 (3.6L)
TERRAIN 13-17 3.6L
XTS 13 (3.6L)
XTS 14-19 (3.6L), VIN 3 (8th digit, opt LFX)

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
***90-day (Unlimited Miles) Remanufactured Cylinder Head Warranty***
We offer buyers a 90-days (Unlimited Miles) warranty for Remanufactured Cylinder Heads beginning on the ship date. Products for warranty consideration must be returned to us at the buyer's expense (unless otherwise agreed) for warranty inspection. We will honor this warranty after determining the defect. This warranty covers replacement parts only. This warranty does NOT cover the following:
Any portion of labor costs such as removing, re-installing, or the replacement of parts including but not limited to gaskets, head bolts, valves, cylinder head castings, filters, fluids, A/C Freon, etc.
Any portion of costs related to towing fees, substitute transportation, lodging, personal or property damage, loss of income, profit or sales.
Any type of evidence of damage due to overheating, pre-ignition or detonation, abuse, or neglect
Any type of damage that occurs from improper installation
Any type of evidence of marine or water craft usage
Any pre-existing problems related to cooling, carburation, fuel injection, egr valve, catalytic converter, electrical, computer-sensors, belts, or anything else not mentioned.
Any type of alteration to the product such as resurfacing the bottom, or installing high performance accessories, etc.
Installation of incorrect parts. If it is determined that the buyer bought the wrong head for the application, this warranty is voided