KYB Suspension Strut Bellows P/N:SB146
Keep road grit off your strut shaft with the KYB Suspension Strut Bellows SB191, a front strut boot kit that shields the polished shaft, upper seal and bushing from the dirt, dust, sand, salt and road debris that cause abrasive wear. It drops in as a direct-fit replacement for the front struts on the 2019-2024 Toyota RAV4, 2020-2024 Highlander, 2021-2024 Sienna and RAV4 Prime, 2024 Grand Highlander, plus the 2022-2024 Lexus NX250, NX350, NX350H and NX450H+ and 2023-2024 RX500H (see the Buyer's Guide tab for the full list).
Each kit services one front strut; for balanced results, replace both front bellows as a matched pair.
What is the KYB SB191?
It is a front strut boot kit with a durable plastic bellows and a poly foam jounce bumper that shields the strut shaft, upper seal and bushing from dirt, dust, sand, salt and road debris.
Which vehicles does it fit?
Front struts on the 2019-2024 Toyota RAV4, 2020-2024 Highlander, 2021-2024 Sienna and RAV4 Prime, 2024 Grand Highlander, plus 2022-2024 Lexus NX250/NX350/NX350H/NX450H+ and 2023-2024 RX500H. See the Buyer's Guide tab.
Does it include a jounce bumper?
Yes. The kit includes a poly foam travel-limiting bumper (jounce bumper) that is designed to help protect the strut from bottoming out and limit extreme-movement damage.
Why replace a torn strut bellows?
A torn or missing bellows lets dirt, sand and salt reach the polished shaft and upper seal, causing abrasive wear and potential leaks. Replacing it helps keep those contaminants out.
How many do I need?
Each kit covers one front strut. For even wear, replace both front bellows as a matched pair when servicing the front struts.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.