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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 1379 reviews
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Product Reviews
★★★★★ 5
Wonderful
Size: 9 Inch, Color: Red
Just bought my second one for my German shepherd. 1st one I bought a year ago. She managed to pop it within a few days. She still was able to play with it by grabbing ahold of the straps. Takes it everywhere. We call it her tether ball. Should've seen her when we got the new one out of the box. Hasn't left it alone since.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
★★★★★ 4
Keeps him busy. Puppy proof
Size: 6 Inch, Color: Independence Day
Thankfully I bought 2. One of the pumps broke as I was trying to blow up. That is the reason i did not give then 5 stats. This is a great toy for my puppy. Keeps him entertained and is pretty sturdy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
★★★★★ 5
Great for dog self play
Size: 6 Inch, Color: Red, Size: 6 Inch, Color: Red
So much fun for my puppy. Easy to grab and throw for him to play alone. Durable for a medium dog. This is his favorite toy. I also bought one for my friends cattle dog puppy who went bonkers with it. Yet her dog liked to chew the tags off. So I wouldn’t recommend for chewers.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
★★★★★ 5
Fun to fetch
Size: 5 Inch, Color: Red, Size: 5 Inch, Color: Red
Perfect size for my 1 yr old Cavapoo that is ball obsessed. This ball is fun to toss around in the yard to exercise and wear out my energetic boy. Perfect for after my work day when I don’t have the energy to match his energy level. He gets to run and chase and I can enjoy his playtime too. Overall the ball is durable and I have confidence it will last for a very long time. We have 2 sizes, small and medium, for my 30 pound athletic pup. He enjoys both equally.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Dog loves them
Size: 6 Inch, Color: Independence Day
My dog loved the first ball I got her, so I got her a second one. Both hhavr been very durable (she likes to puncture things with her teeth). I left each ball slightly deflated, so they were still firm, but she could bite them without issues. She has not punctured either ball yet. I did have to watch her because she started trying to chew the tabs off because she was bored. She has not chewed one off, just started thinking about it, and did a tiny bit of damage to one tab.
She loves these balls. We have played tug of wat with them too, so yhe tabs are sturdy, and so is the ball.
The dog did not care what collar she got, so I grabbed the least expensive one, and the 6 inch. She is a medium sized dog with razor teeth, and these work great.
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Reviewed in the United States on March 15, 2026
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