Hdpe Vs Aluminum Spacers: Know The Differences & Grab The Best-Suited One

Differences set tools apart and make them unique. That said, while comparing the HDPE and aluminum spacers with each other, we have seen that HDPE is a much more durable material than aluminum. But aluminum spacers are more robust and offer more benefits than HDPE. 

Unfortunately, aluminum spacers are more susceptible to damage and denting than HDPE spacers. Apart from all these differences, these spacers have some more significant dissimilarities that we have covered in this hdpe vs aluminum spacers content. So, let’s dig them out. 

Hdpe Vs Aluminum Spacers: Uncover Their Advantages & Demerits

Before getting deep into the comparison brief, let’s first take a glance at what we have found during the research in the comparison table below. 

Key PointsHDPE SpacersAluminum Spacers
Material:High-Density PolyethyleneAluminum Alloy
Applications:Construction, Automotive, ElectronicsMostly Aerospace & 4WD cars
Installation:Quick & EffortlessTime-Consuming
Weight:Comparatively LightQuite Bulky
Price:InexpensiveA Bit Pricey


HDPE spacers are made out of high-density polyethylene, which short form is HDPE. However, the specialty of this kind of material is that it offers unmatched robustness, is moisture-proof, and tends to be less pricey than aluminum spacers. Lastly, this material is resistant to warpage. 

But, HDPE spacers can’t perform extremely well like aluminum spacers in extreme temperatures. When contacted with low temperatures, they can brittle more than aluminum alloy spacers. 

If you see the Dynofit front suspension spacers for your 4Runner or Tacoma, you can expect a rust-free and better ground clearance.

Lastly, speaking of aluminum spacers, mostly, they consist of aluminum alloy, ensuring excellent rigidity in low temperatures. Plus, these spacers offer a comparatively more satisfying lifespan than HDPE spacers.  


In terms of applications, HDPE spacers stay way ahead of aluminum spacers. It’s because these spacers are utilized in the construction, automotive, and electronics industries.

In contrast, aluminum alloy spacers are mostly used in the aerospace industry. But some automotive and construction industrialists also use these rugged instrument-joining tools, especially when it comes to off-road rides and 4wd drive. 


Installation is another key difference we found between these two spacer types. While working with them, we have seen that HDPE spacers are effortless to install as you only need glue to attach them to your desired tools. 

On the other hand, aluminum spacers will require you to use different tools like nails, screws, and pliers to install and tighten aluminum spacers.

That means aluminum spacers will comparatively take a longer time than HDPE spacers. And maybe this is why many rely on the RalliTEK HDPE lift kit spacers for their Subaru ride.


Speaking of the weight, the HDPE spacers and aluminum spacers have a significant difference. The HDPE spacers weigh less than aluminum spacers.

So, if you prefer working with light tools, HDPE spacers are an appropriate option. But, as you know, the more light your tools are, the more prone they get to brittle over time. 


High-Density Polyethylene material is available widely and comes at a low price. Conversely, aluminum is comparatively challenging to find and tends to be a pricey material.

That said, HDPE spacers are less expensive than aluminum spacers. Hence, HDPE spacers are your best bet if you are tight on budget. 

Frequently Asked Questions (FAQs)

Are Spacer Lift Kits Good?

If you want to avoid visiting car workshops to increase the ground clearance of your vehicle for off-road riding, nothing can be as good as the spacer lift kits, and they come at a comparatively lower price than those workshops will charge you. 

But these kits have a limitation; they won’t allow you to raise your vehicle more than a few inches. Hence, spacer kits are your ideal option if you don’t care much about the off-road performance that you usually get by increasing ground clearance. 

Does Aluminium Have High Density?

No, Aluminium features low-density. Because this material boasts light atoms, and so, aluminum is lightweight and effortless to maneuver. And this is one of the reasons for Aluminium to be used in the aerospace industry. Although Aluminium is light, it is extremely robust and supports easy shaping, which is why this material remains in the top priority list of many manufacturers.

What Are Poly Spacers?

Poly spacers are made of polyethylene, a tough and durable plastic. They come in various thicknesses and sizes to accommodate different applications and can be used for everything from leveling furniture to increasing your vehicle’s ground clearance and creating a water-tight seal. Poly spacers are an inexpensive and versatile solution for many common problems.

Do Leveling Kits Wear Out?

In essence, it depends on the leveling kits you are using. For instance, if you have a box of permanent leveling kits containing steel or aluminum spacers, it will last for an extended duration than leveling kits filled with rubber spacers. But if you can properly maintain your leveling kits, you can expect them to last longer regardless of their types.

What Should Be Your Pick?

If you ask us which one wins in the battle of hdpe vs aluminum spacers, we will say HDPE spacers stay a bit ahead of aluminum spacers in some criteria. But they are less stiff and are easy to break or cut into pieces. 

On the contrary, aluminum spacers catch rust over time and come at a high price. So, if you wanna go inexpensive, HDPE spacers are perfect. Otherwise, you can pick aluminum spacers. In short, both spacer types will suit your requirements. Thus, you can try one or both spacer types for your endeavors.

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