Monroe 63640 Suspension Strut Bumper and Bellows Kit - Front or Rear

Monroe Strut-Mate Boot Kit 63640 Overview

The Monroe Strut-Mate Strut Boot Kit 63640 is a front or rear suspension strut bumper and bellows kit built to protect the strut rod from dirt, debris, and impact damage. It is a direct replacement for a damaged jounce bumper or boot on a wide range of vehicles, including Toyota Sienna, Subaru Outback, and Mazda 6 applications.

Monroe’s Strut-Mate line focuses on replacement protection components for struts, using heavy-duty construction and a compact design to help preserve strut rod condition and support longer strut service life. Part number 63640 is a practical choice when the original boot is torn, cracked, or missing.

Key Features

• Black plastic strut boot kit with bellows and bumper included
• Designed to shield the strut rod from road contamination and damage
• Heavy-duty construction for everyday suspension service
• Measures 6.61 in. long with 2.50 in. large-end I.D. and 2.13 in. small-end I.D.
• Fits front and rear applications depending on vehicle listing
• Cross-references KYB SB119 for the same application

Detailed Description

Monroe 63640 is part of the Strut-Mate Strut Boot Kit line, a replacement suspension protection solution for vehicles that need a new strut bumper and bellows assembly. The boot helps keep contaminants away from the strut shaft while the bumper adds impact protection during suspension compression. This makes it a direct service part for maintaining the condition of the strut assembly on vehicles such as Toyota Corolla, Subaru Forester, Honda CR-V, and Volkswagen Tiguan.

Compatible With 2011-2020 Toyota Sienna, front; 2013-2019 Subaru Outback, front; 2014-2019 Toyota Corolla, front; 2009-2017 Mazda 6, front; and 2009-2017 Volkswagen Tiguan, front. Additional coverage includes rear applications such as 2009-2015 Toyota Venza, rear and 2004-2013 Toyota Highlander, rear. This part number, 63640, is also listed as a cross-reference to KYB SB119 for the same application.

What It Helps Address

• Torn or cracked strut boots
• Damaged or missing jounce bumpers
• Exposure of the strut rod to dirt and road debris
• Premature wear from contamination on the strut shaft
• Noisy or rough suspension operation caused by worn protection components

Installation Notes and Tips

Verify the vehicle position before ordering, since Monroe 63640 is listed for both front and rear use depending on the application. Confirm the strut dimensions against the boot’s inside diameters and length before installation. Replace the boot and bumper when the original parts are visibly damaged, and inspect the strut assembly for leaks or rod wear while the suspension is apart.

Quality Assurance

Monroe designs the Strut-Mate line as replacement protection components for suspension service, with heavy-duty materials and a form factor intended to support strut rod protection and improved strut life. Part number 63640 is built for direct-fit service across the listed vehicle applications.