EFS4WD
Reference: 10-1119
Shocks
EFS Spring Isolator for XTR Series MacPherson Struts
A spring seated straight on the strut collar rattles and eventually wears the coating away. This EFS isolator separates the two and has a built-in lock that keeps the spring correctly located. Made for EFS XTR series MacPherson struts 37-6202 and 37-6203.
EFS Spring Isolator for XTR Series MacPherson Struts
A small part that decides whether a rebuilt strut runs quietly. A spring seated directly on the metal strut collar passes every knock into the body, and after a season it leaves a worn patch on the collar.
This isolator goes exactly there. It fits over the strut collar, and the built-in lock holds the spring so it cannot rotate or wander as the suspension works.
TYPE Spring isolator / seat insert | FITS EFS XTR MacPherson struts 37-6202, 37-6203 | MOUNTING Onto the strut collar |
Key benefits
- Separates the spring from the strut collar, removing the point where metal works against metal.
- The locating lock holds the spring in position, so the coil cannot rotate or slip out of its seat at full travel.
- Matched to specific EFS XTR strut part numbers, so you are not improvising with a universal rubber of the wrong diameter.
- An inexpensive part whose absence can spoil the feel of an otherwise well-built strut.
Technical data
- Part: spring isolator / seat insert for MacPherson struts
- Intended for: EFS XTR series struts, part numbers 37-6202 and 37-6203
- Mounting point: strut collar
- Feature: lock that locates the spring
- Part number: 10-1119
- Manufacturer: EFS (Australia)
This belongs on the list for anyone assembling an EFS XTR strut — on the first build, or at service time when the old isolator has had enough. Worth having on hand with the rest of the small parts, because without it the strut assembly is not finished.
Fitting notes
The isolator goes onto the strut collar before the spring is seated, with the strut apart. Working with compressed springs needs the right tools — if you do not have spring compressors, our workshop assembles struts every day.
Why it is worth it
- Solves a specific problem: the spring bearing on a bare metal collar.
- The lock stops the spring shifting in its seat.
- Genuine EFS part matched to specific strut numbers, not a universal substitute.
Building an XTR strut? Add the isolator to the order so you do not have to take it apart twice.
Frequently Asked Questions
Which struts does this isolator fit?
EFS XTR series MacPherson struts with part numbers 37-6202 and 37-6203.
Where does it mount?
It fits onto the strut collar, underneath the spring.
What does the lock do?
It locates the spring, so the coil has a defined position and cannot shift in its seat.
Is this a vehicle-specific part?
No. It is selected by the EFS XTR strut part number rather than by car model.
