EFS4WD
Reference: 2404654
Shocks
EFS 4x4 Upper Shock Bushing, Stud Type — Polyurethane 22×48×14 mm
EFS 4x4 upper stud-mount shock absorber bushing made from 80 Duro polyurethane instead of rubber. Measures 22 × 48 × 14 mm and fits shock absorber 37-6003. Resists oil, abrasion and moisture, limits play on the stud and damps suspension vibration and noise.
EFS 4x4 upper shock absorber bushing, stud type — polyurethane 22×48×14 mm
A knock over speed bumps and a rear end that feels vague usually is not the shock absorber itself — it is the worn bushing in its upper mount. It costs a fraction of a new shock, yet it decides whether that shock works in a controlled way at all.
This is the EFS 4x4 upper bushing for the 37-6003 rear shock absorber, mounted on the stud. It is made from 80 Duro polyurethane elastomer rather than conventional rubber, which is why it holds its shape and shrugs off what actually destroys bushings off-road: oil, grit, water and sunlight.
Position Upper, stud mount | Material 80 Duro polyurethane | Dimensions 22 × 48 × 14 mm |
Key benefits
- 80 Duro polyurethane instead of rubber — the bushing keeps its shape longer, so the shock keeps working without slop in the mount.
- Resistant to oil, abrasion and weather, which is what usually kills rubber bushings on a 4x4 long before mileage does.
- A close fit on the stud limits play, so damping force goes where it should instead of turning into knocking noises.
- Damps vibration and noise coming from the suspension into the body.
- Designed for EFS 4x4 shock absorbers and for hard off-road duty.
Technical data
| Type | Shock absorber damping bushing, upper (stud mount) |
| Material | Polyurethane, 80 Duro elastomer |
| Dimensions (length × OD × bore) | 22 × 48 × 14 mm |
| Fits shock absorber | 37-6003 (upper position) |
| Application of shock 37-6003 | Toyota Land Cruiser 200 (2007-2015+), 30 mm lift; Toyota Land Cruiser 100 from 2000; Lexus 470 from 2000 |
| Part number | 2404654 |
| EAN | 5905247906564 |
There are two moments to order this part: when you fit new EFS 37-6003 shocks and want fresh damping elements throughout, or during suspension service when the shock is still healthy but the mount rattles. It is a wear item, and it wears faster on a vehicle that actually leaves the tarmac.
Fitting notes
The bushing sits in the upper stud mount, so while you are there it pays to check the rest of that joint and its washers. Our workshop works on off-road suspension every day and can swap it during a service or a lift install.
Why it is worth it
- A cheap part that decides whether a far more expensive shock absorber does its job.
- 80 Duro polyurethane is a measurable durability gain over factory rubber.
- Same brand as the shock absorber — no guesswork with generic substitutes.
If you are replacing 37-6003 rear shocks or you hear a knock from their upper mount, add the bushings to the order — they are the cheapest part of that repair.
Frequently asked questions
Which shock absorber does this bushing fit?
The EFS 4x4 shock absorber part number 37-6003, in the upper mounting position — the one that sits on the stud.
Why polyurethane instead of rubber here?
The 80 Duro polyurethane resists oil, abrasion, moisture and UV better than rubber and deforms less under load. In everyday use that means less play on the stud, a longer service life and more consistent shock behaviour.
What are the dimensions?
22 mm long, 48 mm outside diameter, 14 mm inner bore.
Which vehicles is the matching shock absorber intended for?
Shock absorber 37-6003 is listed for the Toyota Land Cruiser 200 (2007-2015+) with a 30 mm lift, the Toyota Land Cruiser 100 from 2000 and the Lexus 470 from 2000.
How many pieces do I need?
This listing covers a single bushing. Order as many as the number of mounting points you are refreshing.
Frequently Asked Questions
Which shock absorber does this bushing fit?
The EFS 4x4 shock absorber part number 37-6003, in the upper mounting position — the one that sits on the stud.
Why polyurethane instead of rubber here?
The 80 Duro polyurethane resists oil, abrasion, moisture and UV better than rubber and deforms less under load. In everyday use that means less play on the stud, a longer service life and more consistent shock behaviour.
What are the dimensions?
22 mm long, 48 mm outside diameter, 14 mm inner bore.
Which vehicles is the matching shock absorber intended for?
Shock absorber 37-6003 is listed for the Toyota Land Cruiser 200 (2007-2015+) with a 30 mm lift, the Toyota Land Cruiser 100 from 2000 and the Lexus 470 from 2000.
How many pieces do I need?
This listing covers a single bushing. Order as many as the number of mounting points you are refreshing.
