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Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
Picking a throttle body for your LS engine can feel like a gamble when every ad promises more airflow and crisper throttle response. But the real choice is simpler: match the bolt pattern and bore size to your intake manifold, then decide between a factory-style electronic unit and a high-flow aftermarket one. The right fit for your intake and engine computer will beat the biggest number on the box every time.
I’m Min Islam — the founder and writer behind Trending Car. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Your intake’s bolt pattern decides everything, and the wrong bore size leaves you with fault codes and a heavy wallet. Here is the shortlist of the best ls throttle body options for your swap, street car, or factory replacement job.
Our Picks at a Glance
How To Choose The Right LS Throttle Body
Your LS throttle body controls the air entering your engine, and the wrong one can cause rough idling, a check-engine light, or a part that won’t bolt on. Before you buy, confirm three things about your build: the bolt pattern on your intake, the pin count in your wiring harness, and how your engine controls the throttle plate.
Match the bolt pattern to your intake manifold
LS intakes generally use either a 3-bolt or a 4-bolt throttle body flange, and the physical bolt spacing is different between them. If the flange does not match your intake, the unit will not seat correctly and you will have a vacuum leak or no way to mount it at all. Measure your current throttle body’s bolt spacing or confirm the pattern on your intake manifold before you commit to a purchase.
Count your wiring pins before you buy
Drive-by-wire throttle bodies communicate with your engine computer through an electrical connector, and that connector can have a different number of pins depending on the vehicle. Some trucks use a different pin count than cars, and mixing them up means the pedal does nothing or the system throws throttle-related fault codes. Look at your factory connector and count the pins so you know exactly what you need.
Decide between drive-by-wire and cable-operated
Most modern LS engines use an electronic throttle pedal with no physical cable, while older setups or certain swaps use a traditional cable that pulls the throttle plate open. A drive-by-wire unit will not work on a cable-operated engine without major electronic changes, and the reverse is also true. Know which system your engine uses, because this is the single most common reason a new throttle body fails to function.
Quick Comparison
| Model | Best For | Bore Size | Item Weight | Actuation | Amazon |
|---|---|---|---|---|---|
| GM Genuine Parts 19420707★ Best Overall | Factory replacement & daily drivers | — | 3.42 lb | Drive-by-wire | Amazon |
| A-Team Performance 92mm | High-flow street & strip builds | 92mm | 2 lb | Drive-by-wire | Amazon |
| Holley Sniper EFI 102mm | Custom EFI & supercharger builds | 102mm | — | Cable operated | Amazon |
In-Depth Reviews
1. GM Genuine Parts 19420707 Throttle Body with Throttle Actuator
Our pick — over 4★ from 20+ verified ratings; the strongest balance of quality and price.
The factory-fresh electronic unit that bolts on and simply works for daily drivers.
When you want a replacement that behaves exactly like the part your GM vehicle left the factory with, this is the one. It is the manufacturer’s own recommended replacement for the original component, which means the fit, form, and function are held to GM’s official specification rather than an aftermarket guess. At 3.42 pounds it carries the heft of a real OE part, noticeably beefier than the 2-pound aftermarket unit in this list.
The practical wins show up in daily life: it helps deliver the right fuel-to-air mix, gives quick response when you stab the pedal, and assists with cold engine starts on frosty mornings. Owners running it on builds like an LS3-swapped 1962 Impala report zero complaints after installation, and Camaro fans describe it as a must-have that fixes throttle issues cleanly.
The one honest caveat is that a defective unit can occasionally slip through, with one owner reporting a failure after about a year that left them stranded and out additional money. The far more common story, though, is a clean fix and a relearn process after install, which is normal for any electronic throttle body on an LS.
What owners praise most
- Perfect factory fit for GM vehicles and LS swaps
- Quick throttle response and smoother cold starts
- Built to genuine GM OE specification with the durability that implies
The trade-off to know
- An occasional unit fails early, stranding the owner
- You must perform a throttle relearn procedure after installation
Reach for this if: you want a direct factory-grade swap for a daily-driven GM vehicle or a clean LS swap without tuning headaches.
Look elsewhere if: you are chasing maximum airflow on a high-horsepower build and need a larger bore than the factory part offers.
2. A-Team Performance 4-Bolt LS Drive By Wire Throttle Body 92mm
A lightweight billet bore built for airflow, but only for the right engine setup.
This is the part you pick when your build is about moving serious air. The 92mm bore diameter is machined from billet aluminum 6061-T6, a high-strength alloy, and the whole unit weighs just 2 pounds versus the 3.42-pound GM factory piece above. That lightness and the large bore are aimed squarely at high-performance street or strip setups where engine responsiveness is the whole point.
The compatibility list is broad on paper — Chevrolet Chevy GM LSX LS1 LS2 LS3 LS6 LS7 engines, plus vehicles like the 2009-2015 CTS V and 2012-2015 Camaro ZL1. It uses a 6-pin connector with gold blades and is designed to pair with A-Team Performance intake manifolds. The catch is that tuning is likely required for best results, and the manufacturer is upfront that this is not a simple bolt-on-and-go part.
The review pages carry serious warnings about compatibility, with buyers reporting fault codes like P0120 and P2135 on LS1 engines and noting that a 2006 Chevy truck needs an 8-wire connector while this unit has 6 wires. The recurring theme is clear: this throttle body demands that you confirm your engine’s wiring and PCM compatibility before purchase, especially if you are working with an LS1.
Where it shines
- Large 92mm bore boost airflow for performance builds
- Lightweight billet aluminum 6061-T6 construction
- Gold-blade 6-pin connector for reliable electronic signal
Where it falls short
- Multiple reports of LS1 incompatibility and PCM fault codes
- 6-wire connector does not match some 8-wire truck applications
- May require professional tuning to run correctly
Who it beats: builds already running an A-Team intake or a modern Gen4 LS that needs a big bore and low weight.
Who it does not suit: anyone with an LS1 or an older truck harness, where the wiring mismatch and fault codes become a real headache.
3. Holley 860005-1 Sniper EFI Throttle Body 102mm
The massive 102mm billet unit for serious builds that plan to feed a supercharger.
This is the biggest bore in the lineup, a 102mm billet aluminum unit wearing a black anodized finish that fits GM LSx platforms. Notably, it is cable operated, not drive-by-wire, so it suits custom EFI installations where you pull the throttle open with a physical cable. It also accepts the GM factory IAC (idle air control) motor, which helps you keep your existing idle control hardware.
Buyers running it on a 2000 Trans Am with an LS3 motor report liking everything about the product, and one buyer purchased it for a 5.3L LS swap, planning to later use it on a factory supercharged 6.0L build. That last point matters: a 102mm bore flows a lot of air, so it shines on forced-induction setups, not on a near-stock street motor.
The honest friction here is in the quality-control and order-fulfillment department. One buyer received a used and damaged unit the first time and had to wait through a return before reordering, while another was sent a mechanical throttle body for a 2011 Camaro instead of the right part. A separate owner reports a loud screaming sound at idle, which is worth knowing before you commit.
Built for boost: the 102mm bore and cable-operated design make this a natural fit for custom EFI and supercharger projects where a factory-style electronic unit will not work.
Buyer beware: double-check that you are receiving the correct 102mm unit, since mix-ups with other throttle bodies have been reported.
Grab it for: a forced-induction LS build or a standalone EFI system that needs a cable-actuated 102mm bore.
Think twice if: your engine is drive-by-wire or your intake manifold is not ported to accept a 102mm opening.
Understanding the Specs
Bore Size in Millimeters
The bore is the diameter of the opening that air passes through, measured in millimeters. A larger bore like 102mm can flow more air, but only if your intake manifold opening is matched to it. Bolting a 102mm throttle body onto an intake designed for 92mm creates a step that disrupts airflow, so match the bore to your intake rather than chasing the biggest number.
Drive-by-Wire vs Cable Operated
Drive-by-wire means your gas pedal sends an electronic signal to a motor on the throttle body, with no physical cable between them. Cable operated means a traditional steel cable physically pulls the throttle plate open when you press the pedal. Your engine’s computer and pedal assembly decide which one you need, so confirm this before ordering.
Connector Pin Count
The electrical connector on a drive-by-wire throttle body has a set number of pins that must match your vehicle’s harness. Some trucks use a different pin count than cars, and mixing them up triggers fault codes or leaves the throttle unresponsive. Count the pins on your factory connector and match them exactly.
Bolt Pattern and Flange
LS intakes use either a 3-bolt or 4-bolt mounting flange, and the spacing is not interchangeable. The throttle body must physically bolt to your intake manifold with the correct pattern, or you will have a vacuum leak or no way to mount it. Verify your intake’s pattern before buying.
FAQ
Will a 92mm throttle body fit my stock LS intake manifold?
What is the difference between a 3-bolt and a 4-bolt throttle body?
Why is my new throttle body throwing fault codes like P0120 or P2135?
Can I use a cable-operated throttle body on a drive-by-wire LS engine?
Does a bigger throttle body bore always mean more horsepower?
Do I need to retune my LS after installing an aftermarket throttle body?
What does the throttle relearn procedure do after installation?
Is a GM Genuine Parts throttle body better than an aftermarket one?
Final Thoughts: The Verdict
The crowd favorite for most owners is the ls throttle body from GM Genuine Parts because it is a factory-grade drive-by-wire unit that bolts on and works, earning strong approval across Camaro and LS-swap owners. If you are building a high-flow street or strip motor and your harness matches, the A-Team Performance 92mm delivers the lightweight billet bore you want. And for a cable-operated, supercharger-fed project, the Holley Sniper 102mm is the big-air choice to reach for.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
As an Amazon Associate, Trending Car earns from qualifying purchases. This does not affect which products we feature.