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Description
GM LS2 LS6 Gen III Gen IV Genuine OEM Cylinder Head 799 Assembly with Valves and SpringsCondition: 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
Condition: USED/REBUILDABLE COREThis 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 |
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 [email protected] 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!
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 2477 reviews
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Product Reviews
★★★★★ 5
A beautiful and affecting book
Format: Hardcover
A beautiful and affecting book. The civil war is, at least to me, deeply familiar, but this book focuses on the personal, and conveys with a painful immediacy the ways that the horror of this conflict infiltrated and transformed the day-to-day existence of our not-so-distant ancestors. I was struck as I have never been before by the degree to which the appalling, unprecedented violence of the conflict was "just around the corner" for familiar and modern-seeming Americans.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2015
★★★★★ 5
... our traditional textbook and primary sources) and my students LOVE it. Although it's not perfect
Format: Hardcover
I have started using this in my US history survey class (along with our traditional textbook and primary sources) and my students LOVE it. Although it's not perfect, it's a great complement to other sources and offers a terrific way to talk about alternate ways to interpret history. In addition, my 11 and 14 year old sons have also read it and enjoyed it, so it's accessible for a broad range of ages. And, as my students note in their final papers, it's fun to read, and how often do gen ed students say that at the end of the semester?
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 16, 2016
★★★★★ 5
Former lib. Book
Format: Hardcover
Book was as described
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 18, 2023
★★★★★ 5
Carry on with the great writing Rachel Lacey while I look for my next bodyguard book
Format: Kindle
I'm on a bodyguard reading kick right now, only wlw of course. I read this one for the first time about a year ago and somehow, I didn't leave a review. ( I'm good at hopping from one book to another and forgetting to write one. oopsy) I loved the bodyguard part but as stories go I always hate someone's parent dying. ( too much like real life) I know it's necessary to show why Natalie is so effed up. Rachel wrote a great ending to this story and that is always a plus in my eyes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
★★★★★ 4
cute and captivating
Format: Kindle
I really enjoyed the storyline and the emotional growth of the characters in this book. I’d been putting it off for a while but I’m glad I finally picked it up and took a chance on it because it was such a cute story.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 24, 2025
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