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Description
ACDelco 12678312 4.8L 5.3L 6.0L 6.2L Fuel Injection Throttle BodyCondition: REBUILDABLE CORE USED This GM 12678312 Fuel Injection Throttle Body fits various engine sizes including 4. 8L, 5. 3L, 6. 0L, and 6. 2L. Designed to control the amount of air entering the engine, this part is essential for optimal engine performance. It is compatible with a range of vehicles such as the Chevrolet Silverado, Chevrolet Corvette, Chevrolet Avalanche, and Chevrolet Suburban. Contributing to the vehicle's fuel efficiency and
Condition: REBUILDABLE CORE/USEDThis GM 12678312 Fuel Injection Throttle Body fits various engine sizes including 4.8L, 5.3L, 6.0L, and 6.2L. Designed to control the amount of air entering the engine, this part is essential for optimal engine performance. It is compatible with a range of vehicles such as the Chevrolet Silverado, Chevrolet Corvette, Chevrolet Avalanche, and Chevrolet Suburban. Contributing to the vehicle's fuel efficiency and engine power, this throttle body is designed for durability and precision.
Fitment and application information provided on a best-effort basis. Customer is ultimately responsible for determining fitment.
| Interchange Number: 337-10048 Notes: GM 12678312; Ident: 12678312 | |||
|---|---|---|---|
| Model Description | Year Range | Engine | Notes |
| ESCALADE | 2018-2019 | throttle valve assembly | |
| ESCALADE ID 12678312 | 2021 | 6.2L | ID 12678312 |
| ESCALADE ESV | 2018-2019 | throttle valve assembly | |
| ESCALADE ESV | 2021 | 6.2L | throttle valve assembly; ID 12678312 |
| SIERRA 1500 PICKUP | 2019 | 6.2L | new style (mirrors mount on door skin); ID 12678312 |
| SIERRA 1500 PICKUP ID 12678312 | 2020-2021 | 6.2L | ID 12678312 |
| SIERRA 2500 PICKUP | 2020 | diesel | |
| SIERRA 2500 PICKUP | 2021 | throttle valve assembly; diesel | |
| SIERRA 3500 PICKUP | 2020-2021 | throttle valve assembly; diesel | |
| SIERRA DENALI 1500 | 2019-2021 | 6.2L | throttle valve assembly; ID 12678312 |
| SIERRA DENALI 2500 | 2020 | diesel | |
| SIERRA DENALI 2500 | 2021 | throttle valve assembly; diesel | |
| SIERRA DENALI 3500 | 2020-2021 | throttle valve assembly; diesel | |
| SILVERADO 1500 PICKUP | 2019 | 6.2L | new style (mirrors mount on door skin); ID 12678312 |
| SILVERADO 1500 PICKUP ID 12678312 | 2020-2021 | 6.2L | ID 12678312 |
| SILVERADO 2500 PICKUP | 2020 | 6.6L | throttle valve assembly; diesel |
| SILVERADO 3500 PICKUP | 2020 | 6.6L | throttle valve assembly; diesel |
| SUBURBAN 1500 ID 12678312 | 2021 | 6.2L | ID 12678312 |
| TAHOE ID 12678312 | 2021-2022 | 6.2L | ID 12678312 |
| YUKON ID 12678312 | 2021 | 6.2L | ID 12678312 |
| YUKON XL 1500 ID 12678312 | 2021 | 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
4.4 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
Easily Create a Workspace
Size: 5 Panels, Color: Grey
Such a great design. I am loving the versatility of these - very easy to set up and also to store. THe color is perfect for them to blend into the decor. While they don't cancel out the noise altogether, they reduce it and decrease distractions. No installation needed - has its own supports. Built really well with good materials - sleek and sturdy and solid. They have increased the privacy and have helped make a great space without difficult construction. Work well and they are great value for money - instant privacy and space.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 13, 2025
★★★★★ 5
Perfect for my company's temporary needs
Color: Gray, Size: 72" wide, 66" Tall
My company ordered multiples of these dividers to separate desks in much smaller temporary space we had to use after our offices were flooded in August 2023. (Yeah, I know - just getting around to reviewing them now!) These fit the bill perfectly. Granted a bit of privacy so we weren't staring at the employee next to us. Easy to put together; excellent value.
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Reviewed in the United States on July 25, 2025
★★★★★ 5
Privacy
Color: Gray, Size: 72" wide, 66" Tall
Sturdy. Is a good divider
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Reviewed in the United States on April 16, 2026
★★★★★ 4
Okay for privacy, not a sound wall
Color: Gray, Size: 72" wide, 66" Tall
Ordered this for a home office, it is easy to put the panels together, one man job. They look nice, stand up well, and gave privacy and seperation. You can tack a white board to them.
These panels have absolutely no sound reducing properties that I can ascertain, so if you are ordering them as 'accoustic" type panels you will probably be disappointed.
For making a cubicle they perform well.
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Reviewed in the United States on April 19, 2021
★★★★★ 5
Noise control
Color: Dark Gray, Size: 72" wide, 66" Tall
Great for office spaces that are close together. Easy to install and easy to move. Very well made. Great value. Easy to move around.
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Reviewed in the United States on August 12, 2025