Katech – 103MM Throttle Body for GEN 5 LT1 / LT4 / LT5 (KAT-A6885)
From: $729.99
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Frequently Purchased Together
Flex Fuel Kits
From: $262.50
This product has multiple variants. The options may be chosen on the product page
Intake Manifolds
Holley – Hi Ram Intake Manifold 105mm Longitudinal Mount w/o Port EFI Provision Gen V LT1 (300-142)
$1,177.95
From: $1,649.95
This product has multiple variants. The options may be chosen on the product page
Description
-Billet aluminum throttle body with GM electronics
-103mm blade
-5-axis CNC-milled inlet
-Clear or black anodized
FOR USE WITH:
C7 Stingray & Gen 6 Camaro LT1 with MSD intake manifold
or
C7 Z06 with ported supercharger inlet
WILL NOT WORK WITH STOCK LT1 INTAKE OR STOCK LT4 SUPERCHARGER
REQUIRES ENGINE CALIBRATION
Questions & Answers (37)
Customer questions & answers
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Can I drive it with no tune for a couple of weeks ?
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A Most likely won't be very good its advised to have it tuned when adding this product
Does it comes with the gasket?
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A No it does not
Setup is gen v lt1 (416ci) ported msd 250 shot. Compression is on the higher side but doesn’t need a dedicated fuel to run. Would you guys recommend a 103 or 112 TB?
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Q Setup is gen v lt1 (416ci) ported msd 250 shot. Compression is on the higher side but doesn’t nee...... Read more answer nowAsked by on January 31, 2026 2:50 pmA 103
hey i was going to get a nick william 103 throttle body for the lt4 along with the dsx aux pump, i was wondering if you guys offer a military discount? thank you in advance!
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Q hey i was going to get a nick william 103 throttle body for the lt4 along with the dsx aux pump, ...... Read more answer nowAsked by on September 4, 2025 10:26 amA Yes we do just need to apply here https://gwatneyperformance.com/military-discount/
I have an L87 with a 3.0L Whipple, will this work?
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A It’s the 2022 Global A L87 btwA Yes it'll work for your application
Does this require a gasket on a ported lt4 snout?
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A No
Thinking of getting the 105mm hi ram will I need an adapter or anything or will it bolt right on?
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Q Thinking of getting the 105mm hi ram will I need an adapter or anything or will it bolt right on? answer nowAsked by on January 2, 2025 1:55 amA It will bolt right on
Will this fit my BTR trinity manifold?
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A Yes
I had my LT4 Blower ported a while back and noticed the back side of the OEM throttle body, the bolt on side is quite a bit smaller than the ported blower inlet. Would this 103mm TB be a better fit for the ported blower, and what other upgrades need to be done for the 103mm fit properly? Thanks!
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Q I had my LT4 Blower ported a while back and noticed the back side of the OEM throttle body, the b...... Read more answer nowAsked by on November 12, 2024 2:49 pmA Depending on whose port job it is you should be able to bolt this direct to your blower snoutA Thanks! It’s Kong’s X Port
Is this direct bolt on to LT4 or does the snout need to be ported first?
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Q Is this direct bolt on to LT4 or does the snout need to be ported first? answer nowAsked by on October 3, 2024 7:25 amA Snout must be ported
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Nice throttle body! I purchased the black one, it looks good, and is working very well with my setup.
Such a nice piece!!
Fast delivery
The missing part that only they had
Love the product