Parts for your 2006 Nissan Navara-Rack boots

2006 Nissan Navara rack-boots — what they are and when they matter

Based on Nissan’s technical literature, whether rack-boots are relevant on a 2006 Nissan Navara depends on the model code. The 2006 Navara D40 uses a power rack-and-pinion steering assembly that includes bellows-type rack-boots (also called steering rack gaiters) on each side of the rack. This is shown in the Nissan Navara D40 Service Manual, Steering (ST) section, which details the rack-and-pinion layout and the protective bellows. The Nissan parts catalogue for D40 also lists left/right rack boot (gaiter) components. By contrast, the 2006 Navara D22 employs a recirculating-ball steering box with pitman and idler arms and a centre link as documented in the D22 Service Manual (ST), so there is no steering rack and therefore no rack-boots fitted to D22 models.

For owners of a 2006 Navara D40, the rack-boots do an unglamorous but vital job. They’re the flexible bellows that seal each end of the steering rack, keeping dust, water, road grit, and mud out while containing the grease that lets the inner tie rods articulate smoothly. Off the blacktop or down a corrugated road, these boots cop a hiding, if they split, the rack’s internal seals and gears can cop contamination, leading to stiffness, noise, or premature rack wear.

As part of routine servicing on a D40, it’s smart to eyeball the rack-boots every oil change or at least every 10,000–15,000 km—more often if the ute sees regular beach runs, creek crossings, or clay. Look for tears, perishing, loose clamps, or grease weeping. If there’s fluid inside the boot, that can point to a leaking rack seal. Catching a minor split early and replacing the boot can save a costly steering rack replacement down the track.

Replacement is straightforward for a competent tech: wheels off, toe marked, outer tie rod end off, then the old boot slides off and the new one goes on with fresh clamps. The inner tie rod ball joint should be checked for play at the same time. After any steering work, a proper wheel alignment is a must, even a half-turn out on the tie rods can give the tyres a hard time. Quality boots made from OE-spec or better rubber tend to last longer, especially in Aussie and Kiwi climates where UV and heat are tough on elastomers. If the Navara regularly hits water or mud, rinsing the underbody and giving the boots a quick post-trip inspection is cheap insurance.

• Key signs it’s time: visible splits, oily grime inside the bellows, steering shudder or stiffness, uneven tyre wear after off-road use.
• Note for D22 owners: no rack-boots are fitted because the steering uses a box-and-linkage design.

Popular questions

Does a 2006 Nissan Navara have rack-boots?
It depends on the model. The 2006 D40 has a rack-and-pinion setup with rack-boots on each end of the rack. The 2006 D22 uses a steering box and doesn’t have rack-boots. Checking the model code on the build plate or the steering layout under the front is the quickest way to confirm.

What are the signs the rack-boots need replacing on a 2006 Navara D40?
Look for cracks, splits, loose or missing clamps, or grease/fluid inside the bellows. You might also notice heavier steering, a gritty feel at the wheel, or accelerated inner or outer tyre wear. Any damage warrants replacement and a follow-up wheel alignment.

Will torn rack-boots fail a WOF or roadworthy in NZ or Australia?
Often, yes. A torn boot can allow contaminants into the steering, which is considered a safety issue. Inspectors may ping the vehicle for damaged or unsecured steering dust boots, and you’ll likely need to replace them and complete an alignment to pass.