A Guide to the Front Suspension Strut Bellows for the 2016 Scion iM
Learn why this small, inexpensive part is critical to protecting your Scion iM's front suspension.
- A torn strut bellows will cause the eventual failure of the entire strut; it should be replaced to protect your suspension.
- It is most cost-effective to replace the bellows at the same time as the struts, as the labor is identical.
- KYB is a trusted, OEM-quality brand for this part, while budget brands like Skyward lack verifiable performance information.
- A wheel alignment is required after replacement.
Is a Torn Strut Bellows a Big Deal?
A torn or cracked strut bellows on your 2016 Scion iM won't cause an immediate problem. You can still drive the car. However, it leaves the most important part of the strut—the polished piston rod—completely exposed to the elements. Dirt and grime will stick to the rod and get dragged past the main oil seal every time the suspension moves. This contamination will quickly destroy the seal, causing the strut to leak and fail. Ignoring a cheap bellows replacement will eventually lead to a much more expensive strut replacement job.
Pro Tip: Replace Bellows with Struts
The labor required to replace just the bellows is the same as replacing the entire strut assembly. For this reason, it is almost always recommended to install new bellows whenever you replace your front struts. This ensures your new struts are protected from day one.
Choosing the Right Aftermarket Bellows
For your 2016 Scion iM, you have a couple of quality levels to consider for aftermarket strut bellows.
Premium Aftermarket: KYB
KYB is a well-respected Japanese company that is an Original Equipment Manufacturer (OEM) for many car brands, including Toyota. This means they make the original parts for many vehicles. Their aftermarket parts are known to meet or exceed original quality. The KYB bellows kit (part number SB101) for the iM is a trusted choice that includes both the flexible boot and a new foam bump stop to prevent the strut from bottoming out. Choosing KYB is a reliable way to ensure long life and proper fit.
Budget Aftermarket: Skyward and Others
Skyward is a more budget-friendly brand. While the lower price is appealing, there is very little public information or owner reviews available for this brand's long-term durability. When choosing a budget part, understand that it may not have the same material quality or precise fit as an OEM-level brand like KYB. It may be a suitable option for those on a tight budget, but the level of protection for your new struts may not be as high.
A Note on Recalls and Service Bulletins
There are no official recalls or Technical Service Bulletins (TSBs) from Scion or Toyota for the suspension strut bellows on the 2016 iM. This part is considered a standard wear-and-tear item that is expected to be replaced over the life of the vehicle.
Typical Replacement Costs for the 2016 Scion iM
Because the bellows is replaced during a strut job, the costs reflect the complete job for one front strut.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Bellows Kit (KYB, Skyward) | $19.97 - $30.09 |
| New OEM Bellows (Part #48157-12111) | $30 - $41 |
| Shop Labor (for one strut replacement) | $260 - $385 |
Frequently Asked Questions (FAQ)
Do I need to get an alignment after replacing the strut bellows?
Yes. Because replacing the bellows requires removing the strut from the vehicle, a front-end alignment is absolutely necessary afterward to ensure proper handling and prevent uneven tire wear.
Can I replace just the strut bellows myself?
This is not recommended for most DIY mechanics. The job requires removing the strut and using a special tool called a spring compressor to safely remove the coil spring. This tool can be very dangerous if not used correctly. Due to the safety risks, this job is best left to a professional mechanic.
What is the difference between a strut bellows and a bump stop?
The bellows is the thin, flexible dust cover. The bump stop (or jounce bumper) is a denser foam or rubber cylinder, usually found inside the bellows. Its job is to prevent harsh metal-on-metal contact if the suspension bottoms out. Most aftermarket bellows kits, like the one from KYB, include a new bump stop.
Will a torn bellows make noise?
A torn bellows itself is unlikely to make noise. However, the strut failure it eventually causes will lead to loud clunking, banging, or rattling sounds when you drive over bumps.
Technical Specifications
OEM Part Numbers: 48157-12111
Fits front struts for the 2016 Scion iM. Aftermarket kits typically include both the bellows (boot) and an internal jounce bumper (bump stop).
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Scion iM:
- 🛍️ Shop This Part
- Is a Torn Strut Bellows a Big Deal?
- Pro Tip: Replace Bellows with Struts
- Choosing the Right Aftermarket Bellows
- Premium Aftermarket: KYB
- Budget Aftermarket: Skyward and Others
- A Note on Recalls and Service Bulletins
- Typical Replacement Costs for the 2016 Scion iM
- Frequently Asked Questions (FAQ)
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