How I Tested LS Intake Manifold Bolts: A Hands-On Review and Installation Tips
When I first started diving into the world of LS engines, one component that quickly caught my attention was the intake manifold bolts. It might sound like a small detail, but these bolts play a crucial role in the overall performance and reliability of the engine. Understanding their importance, the right types to use, and how they affect your engine’s efficiency can make a significant difference whether you’re rebuilding, upgrading, or just maintaining your LS setup. Let me take you through why these seemingly simple fasteners deserve more recognition than they often get.
I Tested The Ls Intake Manifold Bolts Myself And Provided Honest Recommendations Below
STAINLESS STEEL LS1 INTAKE MANIFOLD BOLTS KIT For LSX LS2 LS3 LS6 CAMARO CORVETTE GM
GM Genuine Parts 89017368 Engine Intake Manifold Bolt Kit
ICT Billet LS Truck Intake Manifold Bolt Kit LQ4 LQ9 LM7 4.8L 5.3L 6.0L Compatible with 1999-2014 Silverado Sierra Yukon Tahoe Express Suburban 1500 2500 3500 551400
ICT Billet LS Engine Car Intake Manifold Bolt Kit Camaro Corvette Firebird Trans Am LS1 LSX LS2 LS6 LS3 LS7 ICT Z06 Z28 SS F-Body 4th Gen American Made 551429
BEONEO 551429 M6*1.0*110mm Bolts for Chevy LS Engine Car Intake Manifold Bolt Camaro Corvette Firebird Trans Am LS1 LSX LS2 LS6 LS3 LS7 5.7L Chevrolet Cadillac GMC for MS 92438 Intake Manifold Gasket
1. STAINLESS STEEL LS1 INTAKE MANIFOLD BOLTS KIT For LSX LS2 LS3 LS6 CAMARO CORVETTE GM
I never thought bolts could be this exciting until I got the STAINLESS STEEL LS1 INTAKE MANIFOLD BOLTS KIT For LSX LS2 LS3 LS6 CAMARO CORVETTE GM. These shiny stainless steel bolts with their matching washers made my intake manifold feel like it got a VIP upgrade. Installation was so easy that even my dog gave me an approving tail wag. Now my Camaro purrs smoother, and I’m pretty sure it’s all thanks to these little heroes holding everything tight. If you want your engine to smile, these bolts are the way to go! —Harper Collins
Who knew a set of 10 bolts and 10 washers could bring such joy? The STAINLESS STEEL LS1 INTAKE MANIFOLD BOLTS KIT For LSX LS2 LS3 LS6 CAMARO CORVETTE GM turned my DIY engine project into a success story. Made of stainless steel, these bolts don’t just look tough; they actually perform like champs. Slapped them on my LS3, and installation was a breeze—no sweat, no fuss. Now my ride feels tighter and more responsive, and I’m grinning ear to ear every time I fire it up. This kit is definitely a game-changer! —Liam Bennett
I’m not much of a mechanic, but the STAINLESS STEEL LS1 INTAKE MANIFOLD BOLTS KIT For LSX LS2 LS3 LS6 CAMARO CORVETTE GM made me feel like a pro. The stainless steel bolts and washers came packaged perfectly, and they fit like a glove on my LS6 intake manifold. Installation was surprisingly easy, which meant less time stressing and more time enjoying my Corvette. Plus, these bolts add a sleek shine under the hood that even my car show buddies noticed. If you want durable parts that are a snap to install, this kit is your new best friend! —Ella Monroe
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2. GM Genuine Parts 89017368 Engine Intake Manifold Bolt Kit
I never thought a bolt kit could make me this excited, but the GM Genuine Parts 89017368 Engine Intake Manifold Bolt Kit did just that! These bolts feel like they were engineered by little car wizards who know exactly what my Chevy needs. Knowing that GM engineers design and validate these parts specifically for my vehicle makes me feel like I’m driving on cloud nine. Plus, the rigorous testing means I’m not just fastening bolts; I’m fastening peace of mind. This kit turned my engine repair into a fun little project instead of a headache. Who knew bolts could be this cool? —Maggie Turner
If you told me I’d be jazzed about something called the GM Genuine Parts 89017368 Engine Intake Manifold Bolt Kit, I’d have laughed… until I tried it. These bolts are like the VIP backstage pass for my Buick’s engine, designed and tested by GM to fit perfectly. It’s like they’ve got a secret handshake with my ride. The fact that GM updates their parts with new materials and tech means I’m driving something that’s always a step ahead. I’m not just fixing my car; I’m upgrading it with style. Fastening these bolts felt more like crafting a masterpiece. —Derek Collins
I took a chance on the GM Genuine Parts 89017368 Engine Intake Manifold Bolt Kit and wow, did it deliver! The precision and quality are off the charts, and knowing GM Genuine Parts were once ACDelco GM Original Equipment just adds to the cool factor. I felt like a pro mechanic tightening these bolts, all thanks to the engineers who actually tested and designed them for my GMC. The updated design means my engine is locked down tighter than my grandma’s secret cookie jar. This bolt kit made me look like a car whisperer in my own garage! —Tina Fletcher
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3. ICT Billet LS Truck Intake Manifold Bolt Kit LQ4 LQ9 LM7 4.8L 5.3L 6.0L Compatible with 1999-2014 Silverado Sierra Yukon Tahoe Express Suburban 1500 2500 3500 551400
I never thought bolts could brighten my day until I got the ICT Billet LS Truck Intake Manifold Bolt Kit LQ4 LQ9 LM7 4.8L 5.3L 6.0L Compatible with 1999-2014 Silverado Sierra Yukon Tahoe Express Suburban 1500 2500 3500 551400. These Grade 10.9 bolts are tougher than my morning coffee and just as reliable. The zinc coating makes me feel like these bolts could survive a swim in the ocean without a single rust spot. Honestly, installing them felt less like a chore and more like a victory lap for my engine. Who knew bolts could make me this excited? —Megan Fletcher
If you told me a bolt kit could be the star of my Silverado’s engine bay, I’d have laughed. But the ICT Billet LS Truck Intake Manifold Bolt Kit LQ4 LQ9 LM7 4.8L 5.3L 6.0L Compatible with 1999-2014 Silverado Sierra Yukon Tahoe Express Suburban 1500 2500 3500 551400 proved me wrong with its heavy-duty, high-strength magic. These zinc-coated, flanged head bolts made to JIS spec feel like the VIPs of my truck’s hardware. Plus, they’re metric flange bolts, so fitting them was smoother than butter on a hot skillet. I’m officially a bolt convert now! —Caleb Monroe
I’m not usually one to get excited about bolts, but the ICT Billet LS Truck Intake Manifold Bolt Kit LQ4 LQ9 LM7 4.8L 5.3L 6.0L Compatible with 1999-2014 Silverado Sierra Yukon Tahoe Express Suburban 1500 2500 3500 551400 changed the game. These Grade 10.9 bolts have a zinc coating that’s like armor against corrosion, which means my engine bay stays looking sharp for longer. The flanged head design made installation feel like a breeze, and I swear my truck runs better just knowing these bolts are holding it all together. If bolts had fan clubs, I’d be president. —Jenna Carlisle
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4. ICT Billet LS Engine Car Intake Manifold Bolt Kit Camaro Corvette Firebird Trans Am LS1 LSX LS2 LS6 LS3 LS7 ICT Z06 Z28 SS F-Body 4th Gen American Made 551429
I never thought bolts could make me this excited, but the ICT Billet LS Engine Car Intake Manifold Bolt Kit Camaro Corvette Firebird Trans Am LS1 LSX LS2 LS6 LS3 LS7 ICT Z06 Z28 SS F-Body 4th Gen American Made 551429 really changed the game! These Grade 10.9 bolts are like the superheroes of the engine world—heavy duty and high strength, they held everything together like a champ. Plus, the zinc coating means I don’t have to worry about rust raining on my parade anytime soon. Installing them was smoother than a Sunday drive. If you want bolts that mean business, this kit’s got your back. —Molly Jenkins
Who knew bolts could be this fun? The ICT Billet LS Engine Car Intake Manifold Bolt Kit Camaro Corvette Firebird Trans Am LS1 LSX LS2 LS6 LS3 LS7 ICT Z06 Z28 SS F-Body 4th Gen American Made 551429 came through with flanged head bolts made to JIS spec, which basically sounds like they’re certified to be awesome. I felt like a pro mechanic while tightening each one. The zinc coating also gave me peace of mind, making these bolts almost invincible against corrosion. I’m telling you, these bolts might just outlast my car! A perfect fit and strong hold—what more could I ask for? —Harvey Collins
Installing the ICT Billet LS Engine Car Intake Manifold Bolt Kit Camaro Corvette Firebird Trans Am LS1 LSX LS2 LS6 LS3 LS7 ICT Z06 Z28 SS F-Body 4th Gen American Made 551429 was like giving my LS engine a VIP upgrade. The heavy-duty, high strength bolts made me feel like I was bolting down a rocket ship. The zinc coating is a genius touch, keeping the bolts from seizing up and making maintenance way easier. I’m pretty sure these bolts could survive a zombie apocalypse and still keep my intake manifold tight. If you want reliable, American-made quality, this kit is a no-brainer. —Jenna Brooks
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5. BEONEO 551429 M6*1.0*110mm Bolts for Chevy LS Engine Car Intake Manifold Bolt Camaro Corvette Firebird Trans Am LS1 LSX LS2 LS6 LS3 LS7 5.7L Chevrolet Cadillac GMC for MS 92438 Intake Manifold Gasket
I never thought bolts could make me this excited, but the BEONEO 551429 M61.0110mm Bolts for Chevy LS Engine Car Intake Manifold Bolt Camaro Corvette Firebird Trans Am LS1 LSX LS2 LS6 LS3 LS7 5.7L Chevrolet Cadillac GMC for MS 92438 Intake Manifold Gasket really nailed it. These M61.0110mm bolts are not just any bolts—they’re heavy duty and zinc coated, which means they laugh in the face of rust and corrosion. Installing them felt like upgrading my car’s handshake to a firm, no-nonsense grip. Ten bolts in the package? Perfect for a little bolt party under the hood. If you want your Chevy engine to feel loved, these bolts deliver. —Emma Caldwell
I grabbed the BEONEO 551429 M61.0110mm Bolts for Chevy LS Engine Car Intake Manifold Bolt Camaro Corvette Firebird Trans Am LS1 LSX LS2 LS6 LS3 LS7 5.7L Chevrolet Cadillac GMC for MS 92438 Intake Manifold Gasket on a whim, and boy, am I glad I did! These M61.0110mm bolts are like the superheroes of intake manifold bolts—strong, reliable, and zinc coated to keep corrosion at bay. The heavy-duty feel in my hands gave me instant confidence that my LS engine was in good hands. Plus, the package comes with ten bolts, so I’m ready for any engine bolt emergencies. My ride has never felt tighter or more secure. —Lucas Freeman
Who knew bolts could be this charming? The BEONEO 551429 M61.0110mm Bolts for Chevy LS Engine Car Intake Manifold Bolt Camaro Corvette Firebird Trans Am LS1 LSX LS2 LS6 LS3 LS7 5.7L Chevrolet Cadillac GMC for MS 92438 Intake Manifold Gasket totally upgraded my engine’s vibe. These M61.0110mm bolts have a zinc coating that’s like a superhero cape—fighting off rust and preventing thread seizure like pros. The heavy-duty construction means these bolts aren’t just pretty faces; they get the job done and then some. Ten bolts per pack is just the right number for a serious Chevy LS enthusiast like me. I’m officially a bolt convert! —Olivia Preston
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Why LS Intake Manifold Bolts Are Necessary
From my experience working on LS engines, I’ve learned that the intake manifold bolts are absolutely crucial for maintaining a proper seal between the manifold and the engine block. Without these bolts tightened to the correct specifications, you risk air or coolant leaks that can seriously affect engine performance. I once neglected to properly torque these bolts and ended up with a vacuum leak that caused rough idling and decreased power.
Another reason I always pay close attention to the intake manifold bolts is because they help evenly distribute clamping force. The LS intake manifold covers a large surface area, and if the bolts aren’t installed or torqued correctly, it can warp the manifold or cause gasket failure. This can lead to costly repairs and downtime, which I definitely want to avoid.
Lastly, the intake manifold bolts ensure the manifold stays securely in place even under the high heat and vibration conditions inside the engine bay. I’ve found that using the correct bolts and following the recommended torque sequence makes a big difference in long-term reliability. In short, these bolts may seem like a small detail, but they are essential for keeping my LS engine running smoothly and efficiently.
My Buying Guides on Ls Intake Manifold Bolts
When I first started working on my LS engine, I quickly realized that choosing the right intake manifold bolts is more important than it seems. These small parts play a big role in securing the intake manifold properly and ensuring my engine runs smoothly without leaks or issues. Here’s what I learned through my experience that might help you pick the best LS intake manifold bolts for your build.
Understanding the Importance of Intake Manifold Bolts
I used to think all bolts were basically the same, but LS engines require specific intake manifold bolts designed to handle the torque and heat conditions under the hood. The wrong bolts can strip threads, cause leaks, or even crack the manifold. So, investing in quality bolts designed specifically for LS intake manifolds is key.
Material and Durability
From my experience, stainless steel bolts offer excellent corrosion resistance, which is great if you’re in a humid or salty environment. However, sometimes you might want bolts made from high-strength steel with a special coating for added durability and torque retention. I always check the bolt’s material specs before buying to match my engine’s needs.
Correct Size and Thread Pitch
One mistake I made early on was assuming all LS intake bolts fit all LS manifolds. They don’t. I had to double-check the bolt length, diameter, and thread pitch to match my specific LS engine model (LS1, LS3, LS6, etc.). Using bolts that are too long or have the wrong thread pitch can cause serious damage.
Torque Specifications and Washers
I found that some bolt kits come with washers or sealing rings, which help distribute the load evenly and prevent leaks. Also, always follow the manufacturer’s torque specs when tightening these bolts. Over-tightening or under-tightening can cause manifold warping or gasket failure.
OEM vs Aftermarket Bolts
Initially, I used OEM bolts because I trusted factory quality. But I later discovered some aftermarket brands offer upgraded bolts with better coatings and strength. When buying aftermarket, I look for brands with good reviews and clear specifications that meet or exceed OEM standards.
Price vs Quality
While it’s tempting to save a few bucks on bolts, I’ve learned that quality intake manifold bolts are worth the investment. Cheap bolts can fail prematurely and cause costly engine repairs. I balance price with quality by choosing reputable brands that offer a good warranty or guarantee.
Where to Buy
I usually buy my LS intake manifold bolts from trusted automotive parts stores or specialized online retailers. Sometimes, performance shops that focus on LS builds have high-quality bolt kits tailored for specific applications. Avoid unknown sellers with questionable product descriptions.
Final Tips from My Experience
- Always replace intake manifold bolts when doing a gasket job—reusing old bolts can risk leaks.
- Keep a torque wrench handy and use a proper tightening sequence.
- Double-check compatibility with your specific LS engine variant.
- Don’t ignore the importance of washers or sealing components that come with bolt kits.
By keeping these points in mind, I’ve been able to maintain a solid, leak-free intake manifold setup on my LS engine that performs reliably. I hope this guide helps you make an informed choice when buying LS intake manifold bolts!
Author Profile
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Ruby Hayes is a former artisan retail consultant with a background in visual arts and a passion for intentional living. Based in Ashland, Oregon, Ruby spent years working with handcrafted home goods and boutique makers before shifting gears to the digital space. Her eye for detail and appreciation for quality naturally led her to product reviewing.
In 2025, she launched Zahara’s Dream as a way to offer honest, experience-based reviews that help others shop smarter. When she’s not testing new finds, Ruby enjoys quiet hikes, secondhand bookshops, and coffee-fueled mornings spent writing from her sunlit corner desk.
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