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Description
GM Throttle Body 12678312 OEM 4.8L 5.3L 6.0L 6.2L W/ Mounting HardwareCondition: NEW NEW TAKE OFF The GM Genuine Parts throttle body part number 12678312 is engineered to precise GM standards for optimal engine air control. Designed for fuel injection systems this throttle body plays a vital role in regulating air intake ensuring excellent performance and efficiency across numerous GM vehicle applications such as Sierra Suburban Silverado Tahoe and Yukon. Its precision and reliability are confirmed by multiple sources
Condition: NEW / NEW TAKE OFFThe GM Genuine Parts throttle body part number 12678312 is engineered to precise GM standards for optimal engine air control. Designed for fuel injection systems this throttle body plays a vital role in regulating air intake ensuring excellent performance and efficiency across numerous GM vehicle applications such as Sierra Suburban Silverado Tahoe and Yukon. Its precision and reliability are confirmed by multiple sources making it an essential component for maintaining smooth engine function.
Fitment information provided with best effort, customer is ultimately responsible for fitment
Hollander Number 337-10048
| Application | Year(s) | Engine / Notes |
|---|---|---|
| ESCALADE | 18-19 | (throttle valve assembly) |
| ESCALADE | 21 | 6.2L ID 12678312 |
| ESCALADE ESV | 18-19 | (throttle valve assembly) |
| ESCALADE ESV | 21 | (throttle valve assembly) 6.2L ID 12678312 |
| SIERRA 1500 PICKUP | 19 | style (mirrors mount on door skin) 6.2L ID 12678312 |
| SIERRA 1500 PICKUP | 20-21 | 6.2L ID 12678312 |
| SIERRA 2500 PICKUP | 20 | diesel |
| SIERRA 2500 PICKUP | 21 | (throttle valve assembly) diesel |
| SIERRA 3500 PICKUP | 20-21 | (throttle valve assembly) diesel |
| SIERRA DENALI 1500 | 19-21 | (throttle valve assembly) 6.2L ID 12678312 |
| SIERRA DENALI 2500 | 20 | diesel |
| SIERRA DENALI 2500 | 21 | (throttle valve assembly) diesel |
| SIERRA DENALI 3500 | 20-21 | (throttle valve assembly) diesel |
| SILVERADO 1500 PICKUP | 19 | style (mirrors mount on door skin) 6.2L ID 12678312 |
| SILVERADO 1500 PICKUP | 20-21 | 6.2L ID 12678312 |
| SILVERADO 2500 PICKUP | 20 | (throttle valve assembly 6.6L) diesel |
| SILVERADO 3500 PICKUP | 20 | (throttle valve assembly 6.6L) diesel |
| SUBURBAN 1500 | 21 | 6.2L ID 12678312 |
| TAHOE | 21-22 | 6.2L ID 12678312 |
| YUKON | 21 | 6.2L ID 12678312 |
| YUKON XL 1500 | 21 | 6.2L ID 12678312 |
Part Number: 12678312
Manufacturer: GM
Weight: 3.0000 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
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★★★★★ 5
Truly does clean even mascara and eyeliner and there is no oily residue - just a clean face!
Scent: Unscented, Size: 7.7 Fl Oz (Pack of 1)
I won’t be without this face cleansing oil! It works like magic to remove every trace of foundation, eye liner, mascara, eyeshadow and leaves my face feeling hydrated but not greasy or filmy. It rinses off easily - I have used it for 10+ years . It never causes breakouts nor does it leave residue. I am 75 years old.,
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Refreshingly clean!
Scent: Unscented, Size: 4.1 Fl Oz (Pack of 1)
I was kinda skeptical at first for using oil on my face, but I must say, it is unbelievable Aaaaammmazinng!
My face feels so refreshing afterwards and I can smell the olive oil! 🥰
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Reviewed in the United States on April 30, 2026
★★★★★ 5
A little goes a long way!
I'm almost 50 years old and have dry and super sensitive skin. I've struggled to find for years a gentle moisturizer, but effective on my fine lines as well. Omg this works! This gives my skin a beautiful non-oily glow, no negative reactions or breakouts, and leaves my skin so incredibly soft with elasticity. Within minutes it dries (or skin soaks it up) wonderfully, it's not sticky. I'm very pleased with this product, I will be purchasing it again, I hope this product remains the same, and stays on the market. I LOVE this product! I also have no need for my expensive moisturizer anymore, that was quite frankly not as nice as this. Keeps my skin moisturized and soft for 24 hours, fully tested this. I do use an eye cream, but only after I've used this over my entire face and neck after washing. Amazing product, no scent, awesome value for the money. Highly recommend!!
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Reviewed in the United States on July 20, 2025
★★★★★ 5
Unique Texture, Amazing Results — Now One of My Favorites!
This serum definitely has a texture similar to snail mucin, so it took me a few tries to get used to — but I’m so glad I stuck with it because the results are incredible. Once it absorbs, my skin feels deeply hydrated, smoother, and so much more plump.
The rice and ceramide formula really strengthens the skin barrier, and I’ve noticed my complexion looking brighter and healthier overall. It layers beautifully under moisturizer and doesn’t leave any sticky residue once it settles in.
If you’re looking for a hydrating, brightening serum and don’t mind a unique texture, this one is absolutely worth it. It grew on me fast and is now a staple in my routine!
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Reviewed in the United States on December 4, 2025
★★★★★ 5
Great products
Helps with skin irritation does not leave a crazy residue. It is effective and it's an easy application! so the valuable for your money . They could definitely charge a little less, though. But all around great products by ANUA
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Reviewed in the United States on April 5, 2026
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