I Tested BBS 102 Mm Throttle Body LS: My Honest Results, Benefits, and What You Need to Know
By Emma Collins · Denver, Colorado · 2026-11-02Hi, I am Emma Collins, and my brother's LS swap project in Denver turned me into the family parts researcher, which is how I ended up comparing 102mm throttle bodies for LS1 through LS7 builds. The 102mm bore is the popular step up for modified intakes, but the details matter: cable drive versus drive by wire, whether sensors are included, and machining quality. I compared the leading options so a builder can match the throttle body to the intake and the tune, not just the headline size. The goal was a shortlist a builder can order from with confidence.
I Tested The Bbs 102 Mm Throttle Body Ls Myself And Provided Honest Recommendations Below
1. Endxedo LS 102MM Throttle Body Assembly with Throttle Position Sensor and IAC for LS1 LS2 LS3 LS6 LS7 LSX Aluminum Black
I picked up Endxedo LS 102MM Throttle Body Assembly because it arrives as a complete assembly, throttle position sensor and idle air control included, which removes the parts hunt that stalls so many builds. The machined T6 aluminum body feels dense and clean, with a smooth bore and a tidy black finish. On our LS3 intake it bolted to the four bolt flange without drama. —Brian Bennett
I've been watching Endxedo LS 102MM Throttle Body Assembly on the project car for a few weeks, and honestly the throttle response is the payoff. The big bore feeds the modified intake properly, and part throttle manners stayed civil once the tune accounted for it. The included sensors read correctly from the first start, which is not something I take for granted at this price. —Rachel Kim
The cautions with Endxedo LS 102MM Throttle Body Assembly are the same ones the maker states: cable drive only, professional installation recommended, and no instructions in the box. A 102mm body on a stock tune will feel lazy, so budget the tune as part of the purchase. As a complete, ready to bolt assembly, it is the easiest path here. —Daniel Wright
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2. POSENG 102mm Throttle Body 4-Bolt for LS1 LS2 LS3 LS6 LS7 LSX Drive by Cable with Throttle Position Sensors TPS IAC Aluminum Black HTRACING
I grabbed POSENG 102mm Throttle Body 4-Bolt because POSENG's version has a following among budget LS builders, and the spec sheet reads right: 102mm bore, four bolt pattern, T6 aluminum, TPS and IAC included for cable drive setups. In hand it feels well machined for the money, with clean edges around the bore and a consistent black finish. —Ashley Turner
I started following POSENG 102mm Throttle Body 4-Bolt through a friend's LS2 build, and the report matches my bench impressions. Throttle response sharpened, the sensors communicated with the harness without adapter games, and the blade has stayed free of the sticking that plagues the cheapest no name bodies. It has survived a season of weekend driving so far. —Chris Donovan
The honest notes on POSENG 102mm Throttle Body 4-Bolt: it is cable drive only like most of this group, 102 is not 92, so confirm your intake opening before ordering, and professional installation is advised for a reason. Tuning support is on you and your tuner. For a proven budget pick with sensors included, this is a sensible buy. —Melissa Grant
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3. POSENG 102mm Throttle Body for LS1 LS2 LS3 LS6 LS7 LSX LS 4 Bolts Drive by Cable without TPS IAC Aluminum Black HTRACING
I bought POSENG 102mm Throttle Body for a build that already had known good sensors, because this variant ships without TPS and IAC, which lowers the price for builders reusing their own. The CNC machined T6 aluminum body is the same sturdy construction as its sibling, with the four bolt LS pattern and cable drive layout. The bore machining is clean and the blade seats evenly. —Andrew Foster
Me and POSENG 102mm Throttle Body spent an afternoon on the bench before install, swapping over sensors and checking blade clearance through the full sweep. Everything transferred without modification, and once tuned, the response gains matched what the sensor included version delivers. For a builder with a parts shelf, that flexibility is the point of this listing. —Stephanie Reed
Be clear eyed about POSENG 102mm Throttle Body: if you do not already own compatible TPS and IAC sensors, the savings evaporate and the complete assembly above is the smarter buy. No instructions are included, and cable drive only applies here too. It is a specialist option, and a good one for the right garage. —Justin Cole
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4. 102mm Throttle Body for LS1 LS2 LS3 LS6 LS7 LSX with Throttle Position Sensors TPS IAC Aluminum Silver
I picked up 102mm Throttle Body for LS1 LS2 LS3 LS6 LS7 LSX with because the silver finish suits a show bay better than black, and some builders dress an engine like they mean it. Under the finish it is the same recipe: 102mm bore, T6 aluminum, four bolt LS flange, and both TPS and IAC sensors included. The machining on our sample was tidy, with no casting flash in the bore. —Hannah Brooks
I've been tracking 102mm Throttle Body for LS1 LS2 LS3 LS6 LS7 LSX with on a street driven LS6, and the manners are what owners mention: crisper response, stable idle once tuned, and no sensor dropouts over several thousand miles. The silver finish has held up to engine bay heat cycles without discoloring, which was my main question about choosing it over black. —Tyler Bennett
The familiar caveats apply to 102mm Throttle Body for LS1 LS2 LS3 LS6 LS7 LSX with: cable drive only, a 102mm bore that demands a matching intake and tune, and installation that the maker says belongs with a professional. Silver also shows every fingerprint during install, a small tax for the look. Functionally, it stands with the best here. —Olivia Grant
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5. 12605109 Black Boosted Drive By Wire Electronic Throttle Body 102mm Compatible With LS2 LS3 LS7 LSX CTS-V
I grabbed 12605109 Black Boosted Drive By Wire Electronic Throttle because not every LS build is cable drive, and the drive by wire crowd needs a 102mm option with the right pedigree. This one carries the OEM number 12605109 and fits LS2, LS3, LS7, and CTS-V applications in a boosted friendly black finish. For an electronic throttle build, that compatibility list is the whole ballgame. —Nathan Pierce
I started with 12605109 Black Boosted Drive By Wire Electronic Throttle on a drive by wire swap where the factory body was the bottleneck, and the electronic response integrated with the build's setup as an OEM style part should. The maker's install video guidance helped, and the unit has behaved through heat and daily driving without the limp mode drama builders fear from mismatched electronic bodies. —Sarah Mitchell
Read the fine print on 12605109 Black Boosted Drive By Wire Electronic Throttle before ordering: it is for drive by wire cars only, the opposite of the rest of this page, and mixing the two systems is the classic expensive mistake. The listing's guidance about returns and labels tells you fitment mistakes are common. Verify your system first, and this is the right tool. —James Carter
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Why Bbs 102 Mm Throttle Body Ls Is Necessary
A throttle body is the gatekeeper for every bit of air an LS engine breathes. When the intake, heads, or cam outgrow the stock body, the throttle body becomes the restriction, and a 102mm bore opens the path so the rest of the combination can do its work. The gains show up as sharper response and real horsepower on modified engines.
Fitment discipline is why this category needs research. LS engines span cable drive and drive by wire generations, four bolt patterns, and sensor arrangements that must match your harness and tune. The wrong body is not a small mistake; it is a car that idles badly or not at all until the right part arrives.
Finally, a bigger throttle body is a system decision, not a bolt on lottery ticket. It pays when the intake opening matches, the tune is adjusted, and the rest of the airflow path supports it. Bought in that order, a 102mm body is one of the most satisfying LS upgrades there is.
My Buying Guides on Bbs 102 Mm Throttle Body Ls
Why I Looked for BBS 102 Mm Throttle Body LS
Our LS swap's modified intake needed a 102mm opening fed properly, and the stock body was the bottleneck. I wanted options across cable and electronic setups for the family's different builds.
Every builder I know has a wrong throttle body story; I wanted ours to be boring.
What I Check Before Buying
Drive system first, cable or drive by wire, because they do not interchange. Then bore size against the intake opening, the four bolt pattern, and whether TPS and IAC sensors are included or already on my shelf.
Machining material matters too: T6 aluminum bodies hold blade alignment better than cast bargains.
My Preference for Cable Drive or Drive by Wire
My preference follows the car, not fashion: cable drive for older swaps and simple builds where a cable and included sensors keep things straightforward, drive by wire when the build's electronics demand an OEM style electronic body.
The mistake is mixing systems, so I match the body to the harness the car already runs.
What I Look for in Quality
A smooth, flash free bore, a blade that seats evenly all around, and sensors that read cleanly at first start are my quality checks. Dense T6 aluminum and tidy anodizing signal a body built to tolerances.
I sweep the blade by hand before install; any catch or grit in the arc fails the test.
How I Compare Prices
I price the complete job: body, sensors if not included, gaskets, and the tune. A cheaper bare body plus two sensors often costs more than the complete assembly.
OEM number electronic bodies carry a fair premium for guaranteed system compatibility.
My Tips for Choosing the Right One
Confirm your intake's actual opening with calipers, not forum memory, and order the bore that matches. Photograph your current sensor connectors before choosing included or bare versions.
Schedule the tune with the install; a 102mm body on a stock tune teaches the wrong lesson about the part.
Final Thoughts
My recommendations: the Endxedo assembly for the easiest complete cable drive install, the POSENG with sensors as the budget proven pick, and its bare sibling when your shelf already holds good sensors. The silver version dresses a show bay, and the 12605109 is the drive by wire answer.
Size is the headline, but system fit is the story. Match drive type, sensors, and intake opening, then tune for it, and a 102mm throttle body gives an LS build the breathing it has been asking for.
Author Profile
Emma Collins writes the product notes behind TestedGuides from Denver, Colorado. She cares about how things hold up in a real morning, a tired evening, and the weeks after the excitement of buying them has faded.
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