You’re staring at it, wrench in hand, sweat dripping into your eyes. That lower strut bolt on your 2017 Ford F150 is tighter than a drum, and you’re beginning to suspect it’s been welded in by the factory. I’ve been there. More times than I care to admit, actually. There’s nothing more frustrating than getting halfway through a job only to be defeated by a single, stubborn piece of metal.
It’s a common rite of passage for DIY mechanics, especially when dealing with suspension components that have seen years of road salt and grime. This isn’t just about a stuck bolt; it’s about saving yourself time, money, and a whole lot of cursing.
So, if you’re currently in the thick of it, wondering if you’ll ever be able to remove that bolt from the lower strut on your 2017 Ford F150, take a breath. We’re going to talk about what really works, what’s a waste of your time, and how to get that thing moving.
Why That Bolt Is Stubborn and What It’s Fighting You
Alright, let’s get real. The reason that lower strut bolt on your 2017 Ford F150 is giving you grief isn’t usually because it’s made of some super-alloy. It’s almost always due to a trifecta of vehicular misery: corrosion, overtightening, and the sheer, unadulterated passage of time. Think about it. This bolt is smack-dab in the wheel well, constantly exposed to water, mud, salt (especially if you live anywhere that gets winter), and all the other nasties the road throws at it. Over the years, rust forms a microscopic, yet incredibly strong, bond between the bolt threads and the surrounding metal – whether that’s the strut itself or the control arm it attaches to.
Then there’s the torque. These bolts are tightened to a specific spec for a reason, and that reason is safety. But when they’re put on, sometimes they’re just really on there. Add in the stress of years of driving, potholes, and general road abuse, and you’ve got a recipe for a bolt that feels like it’s part of the chassis. It’s not uncommon for these to be torqued to well over 150 ft-lbs, and sometimes even more, depending on the specific application and torque specifications from Ford.
I remember one particularly nasty incident on a different vehicle, not an F150, but the principle is the same. I was replacing some front suspension components, and one of the lower control arm bolts refused to budge. I tried everything I thought was standard: a breaker bar, some elbow grease, even a bit of tapping with a hammer.
Nothing. After about two hours of frustration, I finally caved and bought a cheap impact wrench from the auto parts store. It made a sound like a small industrial accident and the bolt spun out like it was greased. That was my first real lesson: sometimes brute force, applied intelligently, is the only language these bolts understand.
It taught me that not all stuck bolts are created equal, and sometimes the ‘right’ tool makes all the difference.
The common advice you’ll hear is ‘just use a breaker bar.’ And yeah, a breaker bar is your first line of defense, but it’s often not enough when you’re dealing with seized fasteners on a truck that’s seen a few harsh winters. The sheer use a breaker bar provides is significant, but if the corrosion bond is strong enough, you can end up just rounding off the bolt head, making your life exponentially harder. You might also hear about heating the bolt, which we’ll cover, but that needs to be done with caution, especially with rubber bushings nearby.
For your 2017 Ford F150, the lower strut bolt is particularly notorious because it often connects the strut to the lower control arm or the steering knuckle. This area is prone to collecting debris and moisture, accelerating rust formation. When you’re trying to remove it, you’re fighting not just the bolt’s internal threads, but also the corrosion that’s fused it to its housing. Understanding this helps you appreciate why simple methods might fail and why you need to step up your game.
The Arsenal: Tools and Chemicals That Actually Work
Okay, so you’ve got the situation. Now, let’s talk about what you actually need in your toolbox to get that bolt out. Forget hoping for magic; we need tools and chemicals that have earned their keep. First off, a good quality 6-point socket is a must. Why 6-point? Because they grip the bolt head much better than a 12-point socket, reducing the chance of rounding it off. I learned this the hard way too, trying to muscle a stubborn bolt with a 12-point and ending up with a mangled bolt head. A good breaker bar, at least 24 inches long, is also key. It gives you the use you need without the risk of snapping your ratchet. (See Also: Can You Use Wd40 To Loosen Bolts )
Penetrating oil is your next best friend. Not just any WD-40, though it has its uses for light lubrication. I’m talking about serious penetrating oils like PB Blaster, Liquid Wrench, or Kroil. These are designed to creep into the tightest spaces and break down rust. The trick is to apply it liberally, let it soak – and I mean really soak, ideally overnight if you can – and then reapply. Sometimes, a few cycles of applying, waiting, and gently tapping the bolt head with a hammer (to help the oil penetrate via vibration) will do wonders. This is where patience is key. Don’t rush it.
If penetrating oil and a breaker bar aren’t cutting it, it’s time to bring out the big guns: an impact wrench. A decent corded or cordless impact wrench can deliver thousands of impacts per minute, which can shock the bolt loose even when it feels completely seized. I’ve found that a mid-range 1/2-inch drive impact wrench is usually sufficient for most truck suspension bolts. Don’t go for the cheapest one you can find; you need something with enough torque to do the job. Listen to the sound – a good impact wrench will make a rapid-fire hammering noise as it loosens the bolt.
Here’s a little trick I picked up: after applying penetrating oil and letting it sit, try tightening the bolt just a tiny bit before trying to loosen it. This micro-movement can sometimes break the rust bond without further damaging the threads. It’s counterintuitive, but it works surprisingly often. If that doesn’t work, then you go for the loosening motion with everything you’ve got.
For your 2017 Ford F150, make sure you identify the exact bolt size. It’s usually a metric size, often around 18mm or 19mm for lower strut bolts on trucks, but always double-check with a socket before you start. Having the right size socket and wrench on hand will prevent you from having to stop mid-job.
One tool that’s often overlooked but can be a lifesaver is a pipe or extension for your breaker bar. Adding a piece of sturdy pipe over the handle of your breaker bar effectively turns it into a much longer lever, giving you significantly more torque without requiring Herculean strength. Just be mindful of how much force you’re applying; you don’t want to snap the bolt off inside the knuckle or control arm.
The Heat and Beat Method: When All Else Fails
When you’ve tried penetrating oils, breaker bars, and maybe even a gentle tap of the hammer, and that bolt still won’t budge, it’s time to escalate to the ‘heat and beat’ method. This is where things get a bit more involved, and frankly, a bit more risky if you’re not careful. The principle is simple: heat expands metal. By heating the area around the bolt (the control arm or strut mount), you can expand the metal slightly, breaking the rust bond and making it easier to remove the bolt. Then, you follow up with more force.
The best tool for this job is a propane torch. A MAPP gas torch will get hotter faster, but a standard propane torch is usually sufficient. You want to heat the surrounding metal, not directly the bolt head itself, for an extended period. Aim to get it good and hot – you’ll see discoloration on the metal. Once it’s heated, immediately try to loosen the bolt with your breaker bar. The expansion from the heat combined with the force can often shock it loose.
Here’s the catch, and it’s a big one: your 2017 Ford F150 has rubber bushings in its suspension components. Extreme heat can melt, degrade, or even ignite these bushings. So, you have to be strategic. Heat the area around the bolt, but keep the direct flame away from any rubber. You can also apply some penetrating oil after heating (but be careful, it can flash and burn briefly) as the heat can help draw it in. Some guys even use a mixture of acetone and automatic transmission fluid (ATF) as a homemade penetrant, which is highly flammable, so extreme caution is needed with heat.
My first experience with this was on a rusty exhaust hanger bolt. I’d already tried everything else.
I applied heat for about 30 seconds, then immediately hit it with a breaker bar. It protested, screeched like a banshee, and then broke free. (See Also: Does Heating Rusted Bolts Help Get Them Free )
It was incredibly satisfying, but the smell of burnt undercoating was intense. You need good ventilation and ideally safety glasses and gloves, as well as a fire extinguisher nearby, just in case.
Think about the materials around the bolt you’re heating. If it’s directly next to a rubber boot or bushing, you might need to shield it with a wet rag or a heat shield if you have one.
Sometimes, heating and then letting it cool completely, only to reheat, can be more effective than continuous heating.
Another variation is to heat the bolt head itself, which causes it to expand, and then let it cool naturally. As it cools, it contracts, which can help break the rust bond. Then you try to turn it. This is a more conservative approach and may require several cycles. I’ve found that heating the surrounding material is generally more effective for seized suspension bolts.
If the bolt head starts to round off even with heat, you’ll need to consider bolt extractors. These are specialized sockets with reverse flutes designed to bite into a rounded bolt head. They can be a lifesaver but also carry the risk of breaking off in the bolt, making the problem even worse. Always start with the least aggressive method and work your way up.
| Method | Pros | Cons | Verdict |
|---|---|---|---|
| Penetrating Oil & Breaker Bar | Safe, relatively easy, good first step | May not work on severely seized bolts | Key – always start here. |
| Impact Wrench | Fast, effective for many seized bolts | Requires tool purchase, can damage threads if not careful | Highly Recommended – saves time and effort. |
| Heat (Propane Torch) | Can break stubborn rust bonds | Risk of damaging nearby rubber/plastic, fire hazard | Use with Caution – last resort before cutting. |
| Bolt Extractors | Can save rounded-off bolts | Risk of breaking, can make problem worse | Situational – only when head is already damaged. |
When Things Go South: Cut It Off and Move On
Sometimes, no matter how much penetrating oil you spray, how long you let it soak, how hard you lean on that breaker bar, or how much you heat it, that bolt on your 2017 Ford F150 is just going to laugh at you. It’s happened to the best of us. When this happens, and you’ve exhausted all other reasonable options (short of calling a tow truck), it’s time to accept that the bolt has to be cut off. This isn’t the ideal scenario, as it means you’ll have to replace the bolt, but it’s often the only way to get your truck back on the road.
The best tool for cutting off a stubborn bolt is typically an angle grinder with a metal cutting disc. You want a relatively thin disc so you can get into tight spaces. Carefully position the disc against the bolt head or the shank of the bolt, depending on what’s accessible and what you need to cut through. Wear safety glasses and gloves, and be mindful of sparks and any flammable materials nearby. If you’re cutting the bolt head off, you’ll then need to carefully cut through the remaining shank of the bolt, trying not to damage the surrounding components (like the strut or control arm) if possible. This can be tricky, and patience is required.
Another option, if you have access to one and can maneuver it, is a reciprocating saw (Sawzall) with a metal-cutting blade. These are great for cutting through bolts, but again, you need to be careful about the surrounding material. The vibration can sometimes help loosen things up too, though that’s less of a concern when you’re cutting it off anyway.
My first time having to cut a bolt off was on an old Jeep’s sway bar link. The bolt was completely seized, and the head was already mangled from my earlier attempts. I grabbed my angle grinder, a fresh cutting disc, and went to town.
It made a shower of sparks and a hell of a noise, but within a few minutes, the link was free. The frustration of it being stuck was replaced by the grim satisfaction of brute force. (See Also: Does Anti Seize Cause Bolts To Loosen )
I then had to order a new link and bolt, which was another delay and expense, but at least the job was done. It’s a reminder that sometimes, the ‘quick fix’ is actually a multi-step process involving destruction and replacement.
After the bolt is cut, you’ll likely be left with a stud protruding from the hole. You’ll need to remove this remaining stud. If enough is sticking out, you might be able to grab it with vice grips and twist it out. If not, you may need to drill it out. Start with a small drill bit and work your way up to the correct size. Using a center punch to create a starting point is highly recommended to prevent the drill bit from wandering. If the stud is stubborn, you might need to use a drill bit designed for hardened steel.
For your 2017 Ford F150, if the bolt is seized in the strut itself, cutting it might mean replacing the strut assembly. If it’s in the control arm, you might be able to replace just the bolt or the control arm depending on the damage and accessibility. Always assess the situation after you’ve cut the bolt and determine the best course of action for replacement parts.
How Long Does It Take to Replace Front Struts on a 2017 Ford F150?
Replacing front struts on a 2017 Ford F150 can take anywhere from 1.5 to 4 hours per side, depending on your experience level, the tools you have available, and most importantly, how stubborn the bolts are. If you encounter seized bolts, like the lower strut bolt, expect the job to take significantly longer, potentially pushing it to a full day for both sides if you’re not prepared for the fight.
What Tools Do I Need to Replace Front Struts on an F150?
You’ll need a good set of metric sockets and wrenches (including deep sockets), a breaker bar, a torque wrench, a jack and jack stands, spring compressors (if replacing springs), penetrating oil, safety glasses, gloves, and potentially an impact wrench and angle grinder if you run into seized bolts. A pry bar can also be helpful for separating components.
Can I Replace Struts Myself?
Yes, you can replace struts yourself if you have the proper tools, mechanical aptitude, and a safe workspace. However, it’s a physically demanding job that involves working under the vehicle and dealing with potentially heavy suspension components. If you’re uncomfortable with any aspect of the job, it’s best to leave it to a professional mechanic to avoid injury or damage to your vehicle.
What Should I Look for When Buying Replacement Struts?
When buying replacement struts for your 2017 Ford F150, look for reputable brands known for quality and durability. Consider whether you want standard replacement struts or performance-oriented ones. Check reviews and make sure the part numbers match your specific truck model and trim. Many kits come with all necessary mounting hardware, which is a plus.
Putting It All Together: A Step-by-Step Approach
When you’re facing a bolt that just won’t budge, it pays to have a systematic approach. This isn’t just about brute force; it’s about strategic application of effort. So, here’s a breakdown of how I’d tackle a stubborn lower strut bolt on a 2017 Ford F150, from the least aggressive to the most.
- Preparation is Key: Before you even touch a wrench, gather all your tools. Make sure you have the correct size socket (likely 18mm or 19mm, but verify). Get your penetrating oil (PB Blaster, Liquid Wrench), a good breaker bar (24″+), and safety gear. Position your jack stands securely and make sure the vehicle is stable.
- Penetrating Oil Soak: Generously spray penetrating oil on the bolt threads, aiming for where the bolt enters the strut or control arm. Let it soak for at least 30 minutes. For tougher jobs, apply it the night before.
- Gentle Tapping: After soaking, gently tap the bolt head with a hammer a few times. This vibration can help the penetrating oil work its way into the threads.
- The Breaker Bar Test: Fit your 6-point socket onto the bolt. Attach your breaker bar. Apply steady, increasing pressure. If it moves, great! Keep going slowly. If it doesn’t budge, don’t force it to the point of rounding the head.
- Tighten Slightly (Optional but Recommended): Try tightening the bolt very slightly (just a quarter turn or less). Sometimes this breaks the initial rust seal. Then, attempt to loosen again.
- Impact Wrench Time: If the breaker bar isn’t working, it’s time for an impact wrench. Apply short bursts of power. Listen to the tool; it should be hammering. If the bolt starts to spin but is still tight, a bit more penetrating oil and impact can help.
- The Heat Application: If the impact wrench fails or you don’t have one, carefully apply heat with a propane torch to the surrounding metal, not the bolt directly. Heat for 30-60 seconds, then immediately try to loosen with the breaker bar. Be mindful of rubber bushings and have a fire extinguisher handy. Repeat cycles of heating and cooling can sometimes be effective.
- Bolt Extraction (if head is rounded): If the bolt head is starting to round off, carefully try a bolt extractor socket. Apply steady pressure. If the extractor fails or breaks, you’re moving towards cutting.
- Cut It Off: As a last resort, use an angle grinder or reciprocating saw to cut the bolt. Aim for the bolt head or the shank. Be prepared to replace the bolt and potentially the component it’s seized in.
- Clean Up and Replace: Once the old bolt is out, clean the threads in the mounting hole. Install a new, high-quality replacement bolt, applying anti-seize compound to the threads to prevent this issue in the future. Torque all fasteners to the manufacturer’s specifications.
This methodical approach minimizes the risk of causing more damage and increases your chances of success. Remember, the goal is to get the bolt out, not to break tools or injure yourself. Take your time, especially with the heating and cutting steps.
Final Verdict
Look, nobody enjoys battling a seized bolt, especially on something as important as your suspension. The lower strut bolt on a 2017 Ford F150 can be a real pain, but it’s rarely an impossible one. It often comes down to using the right tools and a good dose of patience.
Don’t be afraid to step up your game from a simple wrench to an impact wrench or even a torch if necessary. Just remember to be safe, especially when heat is involved. If you’ve tried everything and it’s still stuck, sometimes cutting it off is the most efficient path, even if it means a trip to the parts store.
Ultimately, getting that bolt out is about understanding the forces at play – rust, torque, and time – and applying the right counter-forces. You’ve got this. Just remember that next time you’re doing suspension work on this truck, a little anti-seize on the new bolts goes a very long way.
