This Pedders Air Assist Bellows Kit is designed for standard-height Nissan Navara D40 models that regularly tow or carry changing loads. The bellows supplement the rear leaf springs and allow supporting air pressure to be adjusted as the vehicle’s load changes.
This listing is for one complete bellows kit.
For Standard Suspension Height
This is the standard-height version of the D40 bellows kit. Raised vehicles require the separate raised-height kit, so suspension height must be confirmed before ordering.
Important Information
- Air-assist bellows do not increase the vehicle’s plated gross vehicle weight, axle limits, payload or towing capacity.
- Severely sagged or fatigued leaf springs should be replaced rather than masked with additional air pressure.
Features and Benefits
- Manual inflation system
- Helps support the rear suspension under load
- Helps reduce bottoming over rough surfaces
- Pressure can be adjusted as the carried load changes
- Works alongside the existing rear leaf springs
- Warranty: 2 years / 40,000km / 25,000 miles, subject to Pedders’ warranty terms
Vehicle Compatibility
- Nissan Navara D40
- 2005 to 2015 Pedders catalogue application
- Standard D40 2WD and 4WD leaf-over-axle models
Technical Specifications
- Manufacturer part number: RR4631
- GTIN: 9341150049824
- Position: rear
- Quantity: one complete bellows kit
- Weight: 6.28kg
- Suspension height: standard
- Inflation: manual
Installation and Checks
Professional installation is recommended. Check clearance throughout the suspension’s full travel, route the airlines away from heat and abrasion, and set pressure according to the supplied instructions.
If you are unsure about build origin, existing suspension height or the component fitted to your vehicle, confirm those details before ordering. Product photographs should be used as a guide alongside the manufacturer part number and technical notes.



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