Parts for your 2008 Nissan Navara-Rack boots

2008 Nissan Navara rack boots

Based on Nissan’s technical literature, rack boots are fitted to the 2008 Navara when the vehicle is the D40 generation (rack-and-pinion steering). The Nissan Navara D40 Electronic Service Manual (Steering – ST section, circa 2005–2010) shows a rack-and-pinion assembly with bellows-style rack boots on both sides, and the Nissan FAST parts catalogue lists the bellows/boot as a service part for D40. By contrast, the Navara D22 of the same era uses a recirculating-ball steering box with a centre link, pitman and idler arms, that setup does not use rack boots (only dust boots on joints). So, for a 2008 Navara D40: rack boots are relevant and required, for a 2008 Navara D22: rack boots do not apply.

For the 2008 Navara D40, rack boots (also called steering rack bellows or gaiters) are there to keep dirt, water and grit out of the steering rack while allowing the inner tie rods to move freely. They also help retain grease on the inner joints and act as a tell-tale if a rack seal has started leaking, because fluid can pool inside a torn boot.

As part of regular servicing, they should be visually checked every 10,000–15,000 km or at each service, especially if the ute sees beach runs, mud, or gravel roads. Replace any boot that’s cracked, split, soft, or weeping. Driving with a torn boot can let abrasive sand and water into the rack, which can chew out seals and the rack bar, turning a cheap boot job into a pricey steering rack rebuild.

• Common signs they need attention: visible splits or perishing, grease or fluid around the boot, wetness inside the boot, steering stiffness or notchiness, or a WOF/RWC fail noted for a damaged boot.
• Good practice when replacing: use quality clamps (not flimsy zip ties), orient the breather correctly, and make sure the boot isn’t twisted at full lock.

Replacement usually involves removing the outer tie-rod end from the knuckle, sliding the old boot off, cleaning the area, then fitting the new boot and clamps. If the inner tie rod or lock nuts are disturbed, get a wheel alignment straight after. If fluid pours out of a boot, that points to an internal rack seal issue—sort that before fitting new boots or the problem will return.

Technical sources referenced: Nissan Navara D40 Electronic Service Manual (ST – Steering System), Nissan FAST parts catalogue (D40 steering components), and Nissan Navara D22 Service Manual (ST – Steering System, steering box type).

How can someone tell if their 2008 Navara’s rack boots need replacing?

They’ll usually spot cracks, splits, or grease/fluid on or near the boots. If a boot feels soft, sticky, or is wet inside, it’s on the way out. Any notchiness or stiffness in the steering after off-road use can also hint at contamination past a torn boot.

How often should rack boots be inspected on a D40 Navara?

Have them checked at every service (about 10,000–15,000 km), and after any water crossings, beach work, or heavy mud. Replace immediately if damaged—leaving a split boot can quickly escalate into rack wear and leaks.

Is an alignment needed after replacing rack boots?

If the tie-rod end position changes even slightly during the job, yes—book a wheel alignment. A careful tech can sometimes swap boots without altering toe, but an alignment is cheap insurance for even tyre wear and proper steering.