EFS shock absorber bush, 80 Duro polyurethane — 16 mm upper mount

The upper shock bush has the worst job in the whole suspension: it works through a tiny range of movement, but under full load and every impact the wheel takes. When it flattens out the play is small, yet you hear it over every bump and feel it through the wheel.

This bush replaces it with 80 Duro polyurethane — a material that deforms less under load than rubber and takes longer to lose its shape. EFS assigns it to shock absorbers from the Elite range: 36-5427 and 36-5527 as the upper mount, and 36-5426 in older series.

Key benefits

• 80 Duro polyurethane instead of rubber — less play and better vibration damping at the upper shock mount.
• Tight fit on the pin — less clearance between bush and pin means fewer knocks and slower wear of the mount itself.
• Resists oil, dirt, UV and moisture — exactly what surrounds this part in service.
• Resists permanent deformation — polyurethane keeps its rebound properties longer than a rubber equivalent.
• 16 mm bore and 35 mm length — a specific dimension you can check against the bush you removed.

Specifications

• Type: shock absorber bush, upper mount
• Material: polyurethane, 80 Duro elastomer
• Dimensions (length x diameter x inner bore): 35 x 38/33 x 16 mm
• Inner diameter: 16 mm
• Application: EFS shock absorbers 36-5427 and 36-5527 (upper mount) and 36-5426 in older series
• Part number: EB1571-16
• Manufacturer: EFS 4x4 (Australia)

Vehicles covered by this application

Nissan Navara D40 (from 2005), Nissan Navara D23 / NP300 coil-sprung (from 2015), Nissan Navara D23 / NP300 leaf-sprung (from 2015), Nissan Navara D21 (1985-1997), Nissan Navara D22 (1997-2002), Nissan Terrano I / II, Mercedes X-Class 4-cylinder (2017-05.2020), Renault Alaskan (from 2017), Ford Courier / Ranger 2WD, European version (1999-2005), Great Wall V240 (from 2009), Holden / GM Colorado (from 2012), Isuzu D-Max (1988-2003 and 2008-2020), Isuzu Trooper / Monterey leaf-sprung (1983-1992), Isuzu Rodeo (1981-2003), Opel Frontera A leaf-sprung (1992-1995), Mazda Bravo 2WD B2500 and B2600 (1999-2005), Mitsubishi Pajero leaf-sprung (1983-1996), Mitsubishi L200 (from 2006), Jeep Wrangler YJ (1987-1996), Toyota Hilux / 4Runner, Toyota Land Cruiser 40, 42, 45, 46, 47, 60, 61, 62, UAZ 469 (front and rear), Fiat Fullback (from 2018).

This is for someone already running EFS suspension who is servicing it or refitting shocks. If you drive a Navara, D-Max, L200, Hilux or an older Land Cruiser on 36-5427 or 36-5527 shocks, this is the part you replace while everything is apart, so you do not come back to it next season.

Fitting and notes

The bush goes into the upper shock mount. Check your shock absorber part number before ordering — the application list is specific, and it, rather than the vehicle model alone, decides the fit. Shock mounts take bushes in pairs, so count the pieces for a full set. Not sure? Send us the shock number and our workshop will verify it before dispatch.

Why buy this

• Polyurethane holds its dimensions longer than rubber, so the mount stays tight for longer.
• A clear application list from the manufacturer instead of picking a bush by eye.
• A small part that genuinely changes how the suspension sounds and works.

Replacing or servicing EFS Elite shocks? Add a set of upper bushes to the order — you have to strip the mount anyway.

Frequently Asked Questions

Which shock absorbers does this bush fit?

As the upper mount for EFS shocks 36-5427 and 36-5527, and for 36-5426 in older series.

What is the inner diameter?

16 mm. Full dimensions are 35 x 38/33 x 16 mm (length x diameter x inner bore).

Which vehicles does the application list cover?

Among others the Nissan Navara D21, D22, D40 and D23/NP300, Nissan Terrano, Mercedes X-Class 4-cyl., Renault Alaskan, Mitsubishi L200 and leaf-sprung Pajero, Isuzu D-Max, Trooper and Rodeo, Toyota Hilux, 4Runner and Land Cruiser series 40-62, Jeep Wrangler YJ, Great Wall V240, Holden Colorado, Opel Frontera A, Mazda Bravo, Ford Courier/Ranger 2WD, Fiat Fullback and UAZ 469.

Polyurethane or rubber?

This bush is polyurethane. The manufacturer states that 80 Duro polyurethane gives less play, better vibration damping and longer shock service life, and resists oil, dirt, UV and moisture.

How many pieces do I need?

Shock bushes normally work in pairs per mount — confirm the exact count when you remove the old ones.