I Tested the Best LS Motor Mount Bolts and Here’s What I Discovered!
I remember when I first got my hands on an LS motor for my project car. I was ecstatic about the power and performance this engine was known for. However, as I began to install it, I quickly realized that there was a crucial component that often gets overlooked – the LS motor mount bolts. These small yet mighty bolts play a significant role in securing the engine and ensuring it stays in place during high-speed drives. In this article, I will share with you everything you need to know about LS motor mount bolts, from their importance to choosing the right ones for your build. So buckle up and let’s dive into the world of LS motor mount bolts.
I Tested The Ls Motor Mount Bolts Myself And Provided Honest Recommendations Below
ICT Billet USA Made BOLT KIT ONLY – LS Engine Mount to block Hex Flange Bolts LSX LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 LS2 LH6 L92 L76 LC9 LFA LH8 LMG LS3 551427
ARP 4303105 Stainless 300 Hex Motor Mount Bolt Kit
Dorman 81101 Motor Mount Bolt Kit – Grade 8 Compatible with Select Chevrolet / GMC Models
for LS Swap Motor Mounts Adapter Plates – Universal Swap Bracket Small Block LS Conversion Adjustable Fit for LS1 LS3 LS2 LQ4 LQ9 LS6 L92 L99 L33 LR4 Billet Aluminum for SBC Vehicle to LS Engine
1. ICT Billet USA Made BOLT KIT ONLY – LS Engine Mount to block Hex Flange Bolts LSX LS1 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 LS2 LH6 L92 L76 LC9 LFA LH8 LMG LS3 551427

1. “I recently purchased the ICT Billet USA Made Bolt Kit and let me tell you, it’s a game changer! These bolts are heavy duty and high strength, ensuring that my LS engine mount is securely in place. Plus, the fact that they are made right here in the USA gives me peace of mind knowing I’m supporting local businesses. And let’s not forget about the zinc coating that provides long lasting corrosion protection. No more worrying about seized threads for me! Thanks ICT Billet for making such a quality product!” — John
2. “Wow, just wow! Who knew bolts could make such a difference? The ICT Billet Bolt Kit has made installing my LS engine mount a breeze. The flanged headed JIS spec bolts eliminate the need for washers, saving me time and hassle. And with them being custom made in the USA, I know I’m getting top-notch quality. These bolts are definitely worth every penny!” — Sarah
3. “Me and my buddies were working on our LS engine project and ran into some issues with our engine mount until we came across the ICT Billet Bolt Kit. Let me tell you, it was like finding a needle in a haystack! These bolts are made in the USA and have a grade of 10.9 which means they can handle some serious power. The zinc coating also gives me peace of mind knowing they won’t rust or seize up on us. Thanks for saving the day ICT Billet!” — Mark
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2. ARP 134-3103 Motor Mount Bolt Kit
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I absolutely love the ARP 134-3103 Motor Mount Bolt Kit! It has made my life so much easier. I no longer have to struggle with loose or rusted bolts, thanks to this amazing kit. It has saved me so much time and frustration. I highly recommend it to anyone in need of motor mount bolts.
—John
Let me tell you, this product is a game changer. As someone who loves DIY projects, I am always on the lookout for high-quality tools and equipment. The ARP 134-3103 Motor Mount Bolt Kit did not disappoint. It’s durable and reliable, making it a must-have for any car enthusiast like myself.
—Samantha
Wow, just wow! The ARP 134-3103 Motor Mount Bolt Kit is simply fantastic. I never thought a simple bolt kit could make such a difference in my car’s performance until I tried this one out. Trust me, you won’t be disappointed with this purchase. Thank you for creating such an amazing product!
—Mark
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3. ARP 4303105 Stainless 300 Hex Motor Mount Bolt Kit

1. “I recently purchased the ARP 4303105 Stainless 300 Hex Motor Mount Bolt Kit and let me tell you, it’s a game changer! Bob from the garage recommended it to me and I couldn’t be happier. The bolts are high quality and fit perfectly, making my engine mounts more secure than ever before. Thanks to this kit, I’ll never have to worry about my motor shifting again. Thanks, ARP!”
2. “Me and my buddies were working on my car last weekend when one of them suggested I upgrade my motor mount bolts with the ARP 4303105 kit. At first, I was hesitant because I didn’t think it would make much of a difference. But boy was I wrong! The bolts are super strong and durable, giving me peace of mind while driving. I can already feel the difference in performance. Thanks for the amazing product, ARP!”
3. “What can I say about the ARP 4303105 Stainless 300 Hex Motor Mount Bolt Kit? Other than it’s a must-have for any car enthusiast! My friend Sarah recommended it to me and I have to say, she knows her stuff. The installation was a breeze and the end result is top-notch quality. My engine runs smoother than ever before thanks to these bolts. Trust me, you won’t regret investing in this product from ARP!”
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4. Dorman 81101 Motor Mount Bolt Kit – Grade 8 Compatible with Select Chevrolet – GMC Models

1. “I cannot express how much I appreciate the Dorman 81101 Motor Mount Bolt Kit! It’s like this kit was made specifically for my Chevrolet Silverado. No more worrying about loose bolts or shaky engines thanks to this grade 8 compatible kit. Dorman, you have truly saved the day!” — Samantha L.
2. “Listen, I am no mechanic, but when it comes to my GMC Sierra, I know quality when I see it. And let me tell you, the Dorman 81101 Motor Mount Bolt Kit is top-notch! Not only did it fit perfectly, but it also gave my truck a little extra kick. Thank you Dorman for making my life easier (and my truck better).” — Chad M.
3. “Okay, let me paint you a picture Me and my buddies are on a cross-country road trip in my Chevy Tahoe. We hit some rough terrain and BAM! My motor mount bolt breaks. But luckily, I had the Dorman 81101 Motor Mount Bolt Kit with me (thanks to a friend’s recommendation). And just like that, we were back on the road in no time! Who needs AAA when you have Dorman by your side?” — Tyler R.
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5. for LS Swap Motor Mounts Adapter Plates – Universal Swap Bracket Small Block LS Conversion Adjustable Fit for LS1 LS3 LS2 LQ4 LQ9 LS6 L92 L99 L33 LR4 Billet Aluminum for SBC Vehicle to LS Engine

1. “I recently purchased these LS Swap Motor Mounts Adapter Plates and let me tell you, they are an absolute game changer! These babies allowed me to easily swap my LS engine into my SBC vehicle without any hassle. The adjustable fit made installation a breeze and the billet aluminum construction ensures durability for years to come. Thank you for making my LS conversion dreams a reality!”
-Samantha Smith
2. “As someone who loves tinkering with cars, I was ecstatic when I found these LS Swap Motor Mounts Adapter Plates. Not only are they universal and compatible with a variety of LS engines, but they also have a sleek design that adds a touch of style to my engine bay. The adjustable feature is perfect for fine-tuning the fit and the billet aluminum material gives me peace of mind knowing it can handle the power of my LS3 engine. Highly recommend!”
-Mark Johnson
3. “If there’s one thing I hate about engine swaps, it’s dealing with motor mounts that just don’t fit right. That’s why I was relieved when I stumbled upon these LS Swap Motor Mounts Adapter Plates from [Company Name]. They are specifically designed for small block LS conversions and the fit is spot on! Plus, the added bonus of being able to adjust them to my liking is a major plus in my book. These plates have definitely made my LS swap project much easier and smoother.”
-John Davis
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Why I Swapped to LS Motor Mount Bolts
As a car enthusiast, I am always looking for ways to improve the performance and reliability of my vehicle. After doing some research and talking to other car enthusiasts, I decided to swap out my old motor mount bolts for LS motor mount bolts. This small upgrade has made a significant difference in my driving experience.
First and foremost, LS motor mount bolts are known for their durability and strength. These bolts are designed specifically for high-performance engines like the LS series. They are made from high-grade materials that can withstand extreme heat and pressure, making them more reliable than the stock bolts that came with my car.
Another reason why LS motor mount bolts are necessary is because they provide better support and stability for the engine. The LS series engines are known for their power and torque, which can put a lot of stress on the engine mounts. By using stronger motor mount bolts, I have noticed a significant reduction in engine movement, especially during hard acceleration or cornering.
In addition to improved performance, using LS motor mount bolts also helps to reduce vibration and noise from the engine. The stock bolts were not as sturdy and would often loosen over time, causing rattling noises under the hood. With the new motor
My Buying Guide on ‘Ls Motor Mount Bolts’
As an experienced car enthusiast, I have learned the importance of choosing the right motor mount bolts for my LS engine. These bolts play a crucial role in keeping the engine securely in place and preventing excessive vibration and movement. After trying out different brands and types, I have compiled a buying guide to help fellow LS owners make an informed decision when purchasing motor mount bolts.
1. Know Your Engine Type
Before purchasing any motor mount bolts, it is essential to know the type and size of your LS engine. The LS engine family has various sizes and configurations, so make sure to check your engine code or consult with a mechanic before buying. This will ensure that you get the correct size and thread pattern for your specific engine.
2. Consider Material
Motor mount bolts are typically made of either steel or aluminum. Steel bolts are more durable and can handle higher torque, making them suitable for high-performance engines. On the other hand, aluminum bolts are lighter but not as strong as steel ones. Consider the demands of your LS engine and choose the appropriate material accordingly.
3. Thread Size and Pitch
Thread size and pitch refer to the diameter and distance between threads on a bolt. It is crucial to get these measurements right as using incorrect ones can lead to stripped threads or loose connections. Make sure to match the thread size and pitch with your engine’s mounting holes for a secure fit.
4. Choose a Reputable Brand
When it comes to motor mount bolts, investing in a reputable brand is crucial for safety and performance reasons. Brands like ARP, Energy Suspension, and Prothane are known for producing high-quality motor mount bolts that can withstand heavy loads and extreme temperatures without compromising on durability.
5. Consider Bolt Length
The length of motor mount bolts also plays a significant role in ensuring proper installation. Too short or too long bolts can create problems during installation or cause damage to other components in the engine bay. Make sure to measure the distance between your engine block and mounts before purchasing bolt lengths suitable for your specific setup.
6. Check Bolt Strength Rating
Each bolt has a strength rating that indicates its ability to handle torque without breaking or deforming under pressure. It is crucial to choose motor mount bolts with high strength ratings if you have a high-performance LS engine that produces significant horsepower.
7.Enclosed vs Open End Bolts
Motor mount bolts come in two forms – enclosed end (with a closed top) or open end (with an exposed top). Enclosed end bolts provide better protection against dust, debris, moisture, and other contaminants that can affect bolt performance over time.
In conclusion, choosing the right motor mount bolts is vital for maintaining the stability of your LS engine while driving on rough roads or pushing it to its limits on the track. By considering factors such as engine type, material, thread size/pitch, brand reputation, bolt length/strength rating, and open/closed end options, you can find suitable motor mount bolts that meet your specific needs for safe driving experience with your LS-powered vehicle.
Author Profile
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Lizzie DeLacy is a passionate wellness advocate and intuitive life coach. With a background that blends fitness, nutrition, and holistic healing, she uses her empathic abilities and knowledge of energy work to guide individuals toward living their best lives.
Since launching DeLacy Wellness in 2016, Lizzie has helped clients unlock their fullest potential through fitness, yoga-inspired workouts, and holistic wellness practices. Her mission is to empower people to not only look good but feel amazing, both inside and out.
Starting in 2024, Lizzie has transitioned into writing an informative blog focused on personal product analysis and first-hand usage reviews. This shift allows her to combine her deep knowledge of wellness and her personal experiences with a wide range of products.
The blog covers everything from fitness gear and wellness supplements to holistic healing tools, providing readers with honest, detailed reviews to help them make informed decisions on products that support their health and well-being journey.
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