Katech – LT1/LT2/LT4/L86/L87 CNC Ported Throttle Body (KAT-A6856)
$393.99
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- New 87mm GM throttle body
- CNC ported
Fits:
C8 Corvette (LT2)
C7 Corvette (LT1 & LT4)
Gen 6 Camaro SS & ZL1 (LT1 & LT4)
Gen 3 CTS-V (LT4)
Silverado, Sierra, Tahoe, Yukon, and Escalade (L86/L87)
*Does not fit V6 cars/trucks
Ships from manufacturer
This item ships directly from the manufacturer. If your order is urgent, please reach out to determine the specific lead time.
Frequently Purchased Together
Description
- New 87mm GM throttle body
- CNC ported
Fits:
C8 Corvette (LT2)
C7 Corvette (LT1 & LT4)
Gen 6 Camaro SS & ZL1 (LT1 & LT4)
Gen 3 CTS-V (LT4)
Silverado, Sierra, Tahoe, Yukon, and Escalade (L86/L87)
Questions & Answers (21)
Customer questions & answers
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Have an L 83 2018 Silverado 5.3 will this fit on my 5.3 and do I need the adapter?
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Q Have an L 83 2018 Silverado 5.3 will this fit on my 5.3 and do I need the adapter? answer nowAsked by on November 29, 2025 10:32 amA Haven't ran that set up before but I would imagine it would need an adapter
Will this work on my 2009 chevy tahoe with a 5.3
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A No this is for LT platform
Will this TB work on the 219 ZO6 LT4 without a tune?
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Q Will this TB work on the 219 ZO6 LT4 without a tune? answer nowAsked by on December 24, 2024 6:16 amA Will this part fit a 2019 Corvette ZO6 LT4 without a tune?A Not likely
Is there any reason this won’t work on the lv3 if I already have the ICT billet lt1 to LV3 adapter plate?
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Q Is there any reason this won’t work on the lv3 if I already have the ICT billet lt1 to LV3 adapte...... Read more answer nowAsked by on December 9, 2024 12:36 amA I'm not familiar with the v6 platform so I'm not sure on the electrical side how that may vary
Will this work with the btr trinity manifold? Does it need the adapter plate?
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Q Will this work with the btr trinity manifold? Does it need the adapter plate? answer nowAsked by on October 20, 2024 5:26 pmA I know the trinity has a 103 flange but not sure on the other bolt patterns for smaller throttle bodies, you may reach out to them for clarification
Will this fit on my lt2 intake manifold? I believe the manifold says 95mm
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Q Will this fit on my lt2 intake manifold? I believe the manifold says 95mm answer nowAsked by on September 20, 2024 8:26 amA You'll need to run the katech tb adapter but yes
Will this TB need to be tune for it to work properly with my l83 to l86 intake manifold swap? Or is it a straight bolt on with just a need of a TB relearn?
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Q Will this TB need to be tune for it to work properly with my l83 to l86 intake manifold swap? Or ...... Read more answer nowAsked by on August 25, 2024 12:25 pmA It will need to be tuned for
Hello. I just want to confirm if this will fit a 2021 Silverado 1500 6.2L engine with a stock intake manifold? Will my cold air intake fit onto this new throttle body?
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Q Hello. I just want to confirm if this will fit a 2021 Silverado 1500 6.2L engine with a stock int...... Read more answer nowAsked by on July 7, 2023 12:37 pmA Yes it should work
Is this TB ported to 91mm?
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A No its 87mm just ported so its a smooth transition to blade
good afternoon, I'm purchasing the ported lt2 intake manifold kit(with the adapter from 87mm to 95mm) from you guys as well, would this "ported" 87mm TB still fit the lt2 ported manifold? Thank you!
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Q good afternoon, I'm purchasing the ported lt2 intake manifold kit(with the adapter from 87mm to 9...... Read more answer nowAsked by on May 13, 2022 11:56 amA Yes it should
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Works great, would give 5 on the rating but mine was assembled and shipped with the Katech logo upside down! Still works great though.
Very good product the porting job came out good and it gave my truck bit more of throttle response
Fast delivery
Perfect fit and did not even need a tune, but will get one anyway
Porting job looked great, had a stock TB laying around for comparison and there’s a significant amount of material removed. TB installed on a ported L86 manifold. That TB and ported IM combo is a staple for 5.3 guys. Picked up power everywhere.