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Description
12629058 5.3L Cylinder HeadThis 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. Hollander Number 306 01749A Application CAMARO 99 02 8 350 (5. 7L)
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. Hollander Number 306-01749A Application 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 04Hollander Number 306-01749B Application 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 whybrid 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 whybrid 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 5.3LPart 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
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.4 ★★★★★
Based on 1707 reviews
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Product Reviews
★★★★★ 5
Comfortable.
Color: White, Size: Queen (Pack of 2)
Comfortable. Good quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
★★★★★ 3
Average pillow that might be great for some folks, not for me
Color: White, Size: Queen (Pack of 2)
I should have know this would be like every other pillow I've ever ordered. It's too puffy for me. No give. It claims to offer better support for side sleepers but instead it's giving me kinks in my neck. Not for me. Not adjustable. Not versatile. Standard materials. White. Can't speak to washability and durability as I have had it long and haven't washed it.
fair price for two standard pillows.
I really wish all these bedding companies would stop rolling and vacuum sealing pillows and such.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 9, 2026
★★★★★ 5
Just perfect. Well made, No Issues Just one perfect sleep zzzzzzzzzzz😴
Color: White, Size: Queen (Pack of 2)
I had down pillows, and foam pillows, and other synthetic pillows etc and some were ok and others were not. I cannot get a great nights sleep if I am constantly having to adjust my pillow during the night. I ordered these pillows as I sleep on my side mostly but sometimes on my back. When they arrived I followed the directions (as they are in a vacuum pack) and only takes a few minutes for them to acclimate. Then put pillow cases on them and off to bed. I had the BEST sleep I have had in YEARS !!!!! The pillows are great. They keep your head comfortable and cool (No Sweating) and super comfortable. The only issue is after a perfect nights sleep, I find I really do not want to get out of bed in the morning..One great thing, is I am retired so I really do not have to get up out of bed until I want to 😴😳. The pillows are well made and feel like expensive down filled pillows but softer. I am VERY satisfied with the pillows. I just wish I would have found these pillows years ago. But now I have them and the perfect sleep that they provide. Dr Dave
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Reviewed in the United States on June 4, 2026
★★★★★ 5
Great sleep
Color: White, Size: Queen (Pack of 2), Color: White, Size: Queen (Pack of 2)
Finally found a pillow that is comfortable. Tested about 5 until I found the right one. This is perfect for back and side sleepers. Firm, but soft. Just enough filling and great quality. Will hold up for many years.
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Reviewed in the United States on May 24, 2026
★★★★★ 4
Good overall
Color: White, Size: Standard (Pack of 2)
Bought these for our guest bedroom. They are quite overstuffed, so if you like full pillows this will be your thing. As such they are dense and firm. The height is a bit much if you are small framed, but are comfortable overall and stay cool enough to be nice in the summer.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 24, 2026
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