Parts for your 2012 Nissan Navara-Power steering hose

2012 Nissan Navara Power-Steering Hose

Based on the Nissan Navara D40 workshop manual (Steering section, ST) and OEM parts catalogues for 2010–2015 D40 models, the 2012 Nissan Navara uses a hydraulic power-steering system with both a pressure hose and a return hose. Genuine parts listings show a pressure hose assembly (e.g., 49720-EB70A/EB71A variants by VIN/engine) and return lines, confirming that power-steering hoses are fitted from factory.

On a 2012 Navara, the power-steering hose does the heavy lifting: the high-pressure line carries fluid from the pump to the steering rack, while the return hose feeds it back to the reservoir. Together they let the hydraulic system multiply steering effort so the wheel stays light, even with big tyres, towing or corrugations out bush. Over time, heat, age and road grime can harden rubber sections, weep at crimps, or flatten O-rings, so a quick look under the bonnet during each service is smart.

Good upkeep is simple. Stick to the specified fluid (Nissan PSF or an ATF meeting Dexron III/IIIH—check the owner’s manual or cap) and keep the level between the marks. It’s wise to inspect the hoses every service for “sweating” at crimps, damp fittings, cracking, soft swelling near heat sources, or rub marks where the line touches metal. Many owners opt to flush the fluid about every 60,000–100,000 kilometres (or sooner for heavy towing or off-road use) to keep the pump and rack happy.

If a hose needs replacing, go for a quality OEM-equivalent and renew any copper crush washers and O-rings. Use flare-nut spanners on hard lines, avoid twisting the rack fittings, and route the new hose exactly like the original, clipped clear of the exhaust and moving parts. Bleeding is straightforward: with the front wheels off the ground and engine off, turn the wheel lock-to-lock slowly 10 times, top up, then start the engine and repeat until no foam appears and the level stabilises. Recheck for leaks after a short drive.

• Signs of trouble: heavier-than-usual steering, a whine or groan when turning, dark or aerated fluid, or oily spots under the front left.
• Don’t delay repairs—running low on fluid can score the pump and damage the rack, turning a cheap hose job into an expensive fix.

Does the 2012 Navara have electric power steering?

No. The 2012 D40 Navara uses a hydraulic rack-and-pinion system driven by a belt-driven pump, with pressure and return hoses. There’s no electric power-steering motor on this model.

What fluid should be used in the power steering?

Use Nissan Power Steering Fluid or an ATF meeting Dexron III/IIIH, as specified for the D40. Check the reservoir cap or owner’s manual. Avoid mixing fluid types—flush if the history is unknown.

When should the power-steering hose be replaced?

There’s no fixed interval—replace on condition. If there’s seepage at a crimp, visible cracking, swelling, persistent whining from the pump, or recurring top-ups are needed, it’s time. Allow a couple of hours for most hose jobs, pressure hoses can take longer due to access.