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Best Auto Repair, Simi Valley

BJ'S Automotive BBB BusinessReview

2010 Donville Ave Simi Valley, CA 93065

805-527-7741
Opening Hours
  • Mon 8:00AM - 5:00PM
  • Tue 8:00AM - 5:00PM
  • Wed 8:00AM - 5:00PM
  • Thu 8:00AM - 5:00PM
  • Fri 8:00AM - 5:00PM
  • Sat Closed
  • Sun Closed
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805-527-7741 | 2010 Donville Ave Simi Valley, CA 93065

Undercar Services in Simi Valley, CA

Undercar Repairs in Simi Valley

At BJ's Automotive, we take a holistic approach to vehicle care, beginning with a thorough evaluation of your car or truck's foundation. Prior to inspecting the internal components of your vehicle, we prioritize ensuring that you have a strong undercarriage.

Our comprehensive undercarriage inspections and services address this vital but often overlooked area of your vehicle, affording it the care and attention it deserves.

Chassis
The chassis serves as the internal framework of your vehicle, providing support for various components such as the wheels, engine, transmission, driveshaft, differential, and suspension. A weakened or damaged chassis can lead to a weaker vehicle overall.

Differential Flush
The differential is a critical vehicle component that compensates for variations in travel distance between the inner and outer wheels during turns. Typically located at the rear and under non-four-wheel-drive (FWD) vehicles, differentials often do not receive the same level of attention as engines. However, it is essential to understand that differential failure equates to vehicle failure.

Differentials
Differentials serve as the components responsible for transmitting engine power to the wheels. A key function of the differential is to distribute power to the wheels while permitting them to rotate at varying speeds, thus earning its name.

Driveline
The driveline represents a vehicle section that connects the engine and transmission to the wheel axles. This component consists of powertrain parts excluding the engine and transmission. A driveline failure translates to an immobilized vehicle, as energy cannot be transmitted from the engine to the wheel axles.

Shock Absorbers
Shocks, or shock absorbers, are mechanical devices engineered to smooth out rough road surfaces. They achieve this by converting kinetic energy into another form of energy. Properly functioning shocks minimize the impact of traveling over uneven terrain, leading to an improved ride quality and enhanced vehicle handling.

Struts
Much like shock absorbers (shocks), struts serve to dampen the effects of road surfaces as you drive. By absorbing road shocks, struts enable passengers to experience a smoother ride. Struts differ from shocks in that they provide structural support for your vehicle's suspension.


Why Choose Us?

When it comes to undercar repair in Simi Valley, CA, you need a team you can trust to get the job done right. At BJ's Automotive, our experienced technicians take the time to thoroughly inspect your vehicle’s undercarriage, identify the root of the issue, and recommend reliable, long-lasting solutions. We’re committed to quality workmanship, honest service, and keeping your vehicle safe and performing at its best.


Suspension FAQs


How often should shocks be replaced?

Experts recommend that shocks be replaced at 50,000-100,000 miles. If you are a more aggressive driver or frequently drive on rough roads, they will wear out faster. Shocks don't go out all at once, they deteriorate slowly over time. If you are noticing problems with handling, making smooth turns or ride smoothness have one of the professionals at BJ's Automotive inspect your shocks.

Are struts difficult to replace?

Replacing struts is simple and fast for a professional. Replacing your front struts yourself is not recommended, especially if you need a new complete strut assembly kit. When you get your truck's struts replaced you also need to have the front-end alignment checked. Ask the professionals at BJ's Automotive to replace your struts and we will complete the work quickly and easily.

Is it necessary to get an alignment after strut replacement?

BJ's Automotive recommends performing an alignment anytime shocks, struts or other steering and suspension components are replaced. Getting your vehicle's alignment within factory specifications ensures optimal tire wear and helps prolong the life of your tires.

What happens if I only replace one strut or shock?

If you replace only one shock or strut, it will create poor handling when changing lanes or driving over bumps. If your car is new, replacing only one strut or shock absorber may be ok since the opposite side shock is not worn out yet. Generally, BJ's Automotive recommends replacing both shocks or struts.


To learn more about our Undercar services, call us at 805-527-7741 or request a quote by clicking below:


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Discover More About Undercar Repair Services At BJ's Automotive in Simi Valley

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  • ASE (Automotive Service Excellence)
  • AAA Approved Auto Repair
  • BBB Accredited Business
  • Auto Pass
  • BG Products
  • Napa Auto Care Center
  • Car Care Aware

Testimonials

, 04/07/2026
I can not express to you what an awesome experience I had with this company! They were so honest, professional & they went above & beyond to make sure my got the proper service. This is the most positive experience I have ever had from ANY other automotive shop I have dealt with-ever! The staff are so courteous, knowledgeable & they are with you from start to finish. I wish I could give them a 20 star review, just so I could give them a 21!! Recommend to every car owner in SO.CAL ! The absolute best!
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