Eibach
Eibach ERS Coilover Spring - 3.75in I.D. 1400.375.0100S
Eibach ERS Coilover Spring - 3.75in I.D. 1400.375.0100S
Part number: 8QIWS
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- Tracking emailed when it ships
- Free fitment check before you order
Eibach ERS Coilover Spring. Coilovers combine the spring and damper in one height-adjustable unit.
Key features
- 3.75in I.D
Specifications
- Brand: Eibach
- Part type: Coilover kit
Fitment
This listing does not name specific vehicles. Match the part number and the specifications with the part you are replacing.
What it does
Coilovers replace the factory struts or shocks and springs at each corner. Worn suspension and steering parts show up as clunks, wandering, uneven tire wear and a vague feel; fresh parts restore control, and performance parts sharpen it.
Installation & tips
- Get a wheel alignment after setting ride height.
- Alignment: Ride height changes alignment.
- Camber arms: Lowered cars often need more adjustment.
- This part affects how the vehicle stops, steers or holds the road. If you are not sure how to fit it, have it installed or checked by a qualified mechanic.
FAQ
Can I install it myself?
Many owners do this job at home with the right tools and a service manual, but because it is a safety-related part, have the work checked by a qualified mechanic if you are not sure.
What should I check before ordering?
Compare the part number, specifications and fitment on this page with your vehicle and with the part you are replacing.
Before you order
- Measure the part you are replacing and compare it with the specifications above.
- Plan for a wheel alignment after fitting if the job changes the suspension or steering geometry.

Eibach coilovers: what to know
They let you set ride height and, on adjustable kits, tune how firm the ride feels.
Fitment notes
- Specs, lead time and warranty come from Eibach and can change. The details above this guide are the latest we have.
Not sure it fits? Message us your vehicle details and we'll double-check fitment before you buy.
Ask about fitmentWhat else to plan for
- Alignment. Ride height changes alignment.
- Camber arms. Lowered cars often need more adjustment.
More for your car: Coilovers · All Coilovers · Suspension & steering
Questions about coilovers
Will this fit my car?
Will I need an alignment?
Where do specs and warranty details come from?
Questions & answers
No questions yet about this part. Ask about fitment, what's in the box or installation and we'll answer here.