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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
4.3 ★★★★★
Based on 865 reviews
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Product Reviews
★★★★★ 5
Liquid facial magic!
Scent: Coconut Water, Size: 12 Fl Oz (Pack of 1)
I love this stuff. I use it daily as part of my facial routine and it has become one of those products I don’t even think about anymore because it just works.
It smells good without being overpowering and does a great job of helping control excessive oil buildup on my face. Nothing harsh, nothing drying, just clean and refreshed skin. Right after using this, I follow up with a facial moisturizer and the combo works beautifully. My skin feels balanced instead of tight or angry, which is exactly what I’m going for.
I know the label says men can use this as an aftershave, but that’s a hard pass for me. I stick to soothing, purpose-built post-shave products, specifically from Wholly Kaw. That stuff smells like it was handcrafted by skincare deities who truly care about your face. This toner is staying firmly in the “daily skincare” lane, where it shines.
Another big plus is how gentle it is. No burning, no weird tingling, no regret. Just a calm, refreshing step that makes my skin feel like it’s being treated with respect.
And the price? Under $10. That alone keeps me coming back. Honestly, I think they could charge a few dollars more for how well this performs, but I won’t complain about paying less for fantastic facial liquid magic.
Simple, effective, affordable, and a permanent part of my routine. My face approves.
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Reviewed in the United States on December 21, 2025
★★★★★ 5
THAYERS Lavender Witch Hazel Toner: Time-Tested Elegance in a Bottle!
Scent: Lavender, Size: 12 Fl Oz (Pack of 1)
Embarking on a journey down memory lane with THAYERS Lavender Witch Hazel Facial Toner has been nothing short of a delightful reunion. This timeless brand, known since my youth, has proven its mettle yet again. Let's dive into the aromatic, moisturizing wonder that is the Lavender Witch Hazel Toner:
Quality Infused with Elegance (5/5): THAYERS brings a touch of timeless elegance to skincare, and this lavender-infused toner is no exception. The quality is unmistakable, leaving my skin feeling pampered and rejuvenated after each use.
Cleansliness at its Best (5/5): The toner's prowess in cleansing is unparalleled. It effortlessly removes dirt and impurities, unveiling a refreshed and squeaky-clean complexion. My skin thanks me for this daily ritual of cleanliness.
Moisturizing Magic (5/5): The moisturizing effect is like a gentle caress for the skin. Unlike some toners that leave your face feeling parched, THAYERS Lavender Toner ensures that my skin is not just clean but incredibly moisturized after every application.
Refreshing Elixir (5/5): Ah, the refreshing burst of lavender! While opinions on the strength of the scent may vary, I find the lavender notes to be a delightful touch. The toner rejuvenates not just my skin but also my senses, making each application a mini spa moment.
Better than the Expensive Competitors (5/5): Sometimes the best things come in unassuming packages. Users have attested that this toner outshines even pricier competitors, proving that quality doesn't always have to break the bank.
Mixed Durability Verdict (4/5): Opinions are divided on durability, but for me, the overall benefits outweigh any minor considerations. The toner's efficacy in daily use makes it a staple in my skincare routine.
Generations-Long Trust (5/5): THAYERS is a brand that has stood the test of time, transcending generations. Its legacy of trustworthiness extends beyond my own experience, connecting with others who have relied on its skincare wonders.
Lavender Scent Aspiration (4/5): While I had hoped for a stronger lavender scent, the subtle notes are still a pleasant addition to my skincare ritual. The product's efficacy compensates for any scent expectations.
In conclusion, THAYERS Lavender Witch Hazel Facial Toner is a testament to the enduring charm of a trusted brand. Its quality, cleanliness, and moisturizing benefits make it a staple in my skincare routine and a connection to the past. Whether you're a longtime fan or a newcomer, this toner is a timeless treasure for your skin. Cheers to THAYERS for continuing to deliver skincare excellence!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 17, 2024
★★★★★ 5
Lasts awhile! Good product
Scent: Rose Petal, Size: 12 Fl Oz (Pack of 1)
Cleans without overdrying. Leave skin feeling clean, no stickiness. Pleasant light scent that doesn't linger. I get my moister from other products so this one idk if it moisturizes by itself. Good value for the money, you get a lot so it lasts awhile.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
★★★★★ 4
Love! Smell is nice, helps with dry skin
Scent: Cucumber, Size: 12 Fl Oz (Pack of 1)
I have been using Thayers for years. My skin is sooo dry and tight post shower. I put this in a small mister bottle, and Mist my face.
Scalp- my scalp gets itchy, I use this, witch hazel, apple Cider Vinegar and water in a dropper. Works amazing!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
★★★★★ 5
Great rose toner!
Scent: Rose Petal, Size: 12 Fl Oz (Pack of 1), Scent: Rose Petal, Size: 12 Fl Oz (Pack of 1)
As an aesthetician, this is my go to over the counter toner. Rose is great for your skin and the ingredients in this are great. I am extremely sensitive, and this does not irritate my skin at all. It keeps it soft and clear.
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Reviewed in the United States on May 6, 2026