GM LS2 LS6 Gen III Gen IV Genuine OEM Cylinder Head 799 Assembly with Valves and Springs

Condition: USED/REBUILDABLE CORE

This Cylinder Head part number 12629058 is engineered for optimal engine performance in many V8 applications. Designed to enhance combustion cooling and overall power output it is widely used in vehicles such as light trucks and performance models. The part has demonstrated reliability in 5.3L engines and its quality is supported by multiple technical sources and fitment records.

Fitment information provided with best effort, customer is ultimately responsible for fitment

Hollander Number 306-01749A

Application	Year(s)	Engine / Notes
CAMARO	99-02	8-350 (5.7L)
CORVETTE	99-00
CORVETTE	01-04	LS1 engine (VIN G 8th digit)
FIREBIRD	99-02	5.7L
GTO	04

Hollander Number 306-01749B

Application	Year(s)	Engine / Notes
ALLURE	08-09	5.3L
AVALANCHE 1500	07-10	5.3L
AVALANCHE 1500	11-13
CANYON	09-12	5.3L
COLORADO	09-12	5.3L
CORVETTE	01-04	LS6 engine (VIN S 8th digit)
CORVETTE	05
CORVETTE	06-07	6.0L
CTS	04-05	5.7L (VIN S 8th digit 8-350)
CTS	06-07	6.0L (VIN U 8th digit 8-364)
ENVOY	05-09	5.3L (Denali)
ENVOY XL	05-06	5.3L
ENVOY XUV	05	5.3L
ESCALADE	09-13	6.0L (Hybrid)
EXPRESS 1500 VAN	08-14	8-323 (5.3L)
EXPRESS 2500 VAN	08-12	8-323 (5.3L)
EXPRESS 2500 VAN	08-16	8-292 (4.8L)
EXPRESS 2500 VAN	17	4.8L
EXPRESS 3500 VAN	08-16	8-292 (4.8L)
EXPRESS 3500 VAN	17	4.8L
GRAND PRIX	05-08	5.3L
GTO	05-06
HUMMER H3	08-10	5.3L
IMPALA	06-09	5.3L
ISUZU ASCENDER	05-06	5.3L
LACROSSE	08-09	5.3L
MONTE CARLO	06-07	5.3L
RAINIER	05-07	5.3L
SAAB 9-7X	05-09	8 cylinder
SAVANA 1500 VAN	08-14	8-323 (5.3L)
SAVANA 2500 VAN	08-12	8-323 (5.3L)
SAVANA 2500 VAN	08-16	8-292 (4.8L)
SAVANA 2500 VAN	17	4.8L
SAVANA 3500 VAN	08-16	8-292 (4.8L)
SAVANA 3500 VAN	17	4.8L
SIERRA 1500 PICKUP	05-06	5.3L VIN B (8th digit opt L33)
SIERRA 1500 PICKUP	07	classic style (creased door skin) 5.3L VIN B (8th digit opt L33)
SIERRA 1500 PICKUP	07	style (smooth door skin) 4.8L
SIERRA 1500 PICKUP	07	style (smooth door skin) 5.3L
SIERRA 1500 PICKUP	08-10	5.3L
SIERRA 1500 PICKUP	08-13	4.8L
SIERRA 1500 PICKUP	09	6.0L hybrid option (opt HP2)
SIERRA 1500 PICKUP	10-13	6.0L
SIERRA 1500 PICKUP	11-13	5.3L gasoline
SILVERADO 1500 PICKUP	05-06	5.3L VIN B (8th digit opt L33)
SILVERADO 1500 PICKUP	07	classic style (creased door skin) 5.3L VIN B (8th digit opt L33)
SILVERADO 1500 PICKUP	07	style (smooth door skin) 4.8L
SILVERADO 1500 PICKUP	07	style (smooth door skin) 5.3L
SILVERADO 1500 PICKUP	08-10	5.3L
SILVERADO 1500 PICKUP	08-13	4.8L
SILVERADO 1500 PICKUP	09	6.0L hybrid option (opt HP2)
SILVERADO 1500 PICKUP	10-13	6.0L
SILVERADO 1500 PICKUP	11-13	5.3L gasoline
SSR	05-06
SUBURBAN 1500	07-09	8-323 (5.3L)
SUBURBAN 1500	10-14	(5.3L)
TAHOE	07
TAHOE	08-09	4.8L
TAHOE	08-09	5.3L
TAHOE	08-09	6.0L
TAHOE	10-14
TRAILBLAZER	06-08	5.3L
TRAILBLAZER	06-09	6.0L
TRAILBLAZER EXT	05-06	5.3L
YUKON	07-09	4.8L
YUKON	07-14	5.3L
YUKON	08-13	6.0L
YUKON XL 1500	07-14	5.3L

All parts industrially cleaned and inspected for cracks and damage before shipping

Part Number: 12629058
Manufacturer: GM
Weight: 26.0000 lbs

Additional Details:
Genuine OEM Parts

Please research/ensure fitment of part to your specific vehicle before purchasing. Returns because of non-fitment are accepted with a re-stocking fee, however customer is responsible for return shipping.

Shipping:
If shipping outside the contiguous 48 states is required, reach out to shopify@custardcore.com to confirm shipping details.

About Us:
Custard Core Supply provides the highest quality of new, new take off, used, and core parts. We provide a variety of gas and diesel parts to our customers. Based in Dallas, TX Custard Core Supply has been in business since 1998. If you do not see a product you are looking for on our page, please reach out!