21 September 2026
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15 March 2023
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General
If you own a Land Rover Discovery 3 or 4, you’ve probably heard that upgrading to Polybush Front Lower Wishbone Bushes (1BH) is an excellent enhancement for your suspension system, which replaces the main failure bush RBX500291 / LR051586 / LR025159. In this post, we’ll explain why fitting Polyurethane bushes to your Discovery can improve comfort and save you money in the long run.
Polyurethane is a resilient polymer that outlasts traditional rubber in harsh conditions. Polybush products enhance handling and steering precision when used in suspension bushes while reducing deflection for a more responsive feel.
Improved Comfort
Polyurethane bushes significantly enhance ride quality by minimising noise, vibration, and harshness (NVH). Polyurethane’s firmness ensures it compresses less than rubber, absorbing more energy from road impacts. The result? A smoother, quieter ride with less feedback from rough surfaces.
Increased Durability
Land Rover Discoveries are built for both on and off-road driving, which subjects the suspension to more stress than standard vehicles. Polyurethane bushings are far more durable than rubber, withstanding wear and tear from these conditions much better. This means fewer replacements and lower maintenance costs over time.
Cost Savings
While Polyurethane bushes, like Polybush, may require a higher upfront investment compared to rubber, they are a cost-effective choice in the long term. Polybush bushes typically last 4-5 times longer than rubber, reducing the need for frequent replacements. Additionally, their improved handling and steering help protect other suspension components from premature wear, saving you from more costly repairs down the road.
Upgrading to Polybush Front Lower Wishbone Bushes (1BH) for your Land Rover Discovery 3 or 4 brings a host of benefits: better ride comfort, enhanced durability, and long-term cost savings. If you’re thinking about upgrading your suspension, Polyurethane bushes are worth considering. They provide the perfect balance between performance and longevity, especially for the demands of off-road adventures.
Vehicle Sets
OE Reference: RBX500291
Bushes Per Vehicle Set: 2
Product Specifications:
– Bush Type: Front Lower Wishbone Rear Bush
– Polybush Part Number: 1BH
– Grade: Dynamic
– Shore A Hardness: 75
– Bush Design: Top Hat
– Contains: 2 x Polyurethane Bushes
– Replaces OEM Part: RBX500291, LR051586, LR025159, LR073366
– Weight: 1.83kg
– Delphi No: TD1377W
– Febi No: 47573
Vehicle Fitment:
Land Rover Discovery 3 (2004-2010)
Land Rover Discovery 4 (2010-2016)
Why Choose Polybush?
If you’re replacing tired, perished rubber bushes, Polybush polyurethane bushes are a smart long-term upgrade. Here’s why:
– Longer Lasting: Polybush suspension bushes are designed to last significantly longer than standard rubber and are resistant to oil, road grime and age-related deterioration.
– Improved Handling: Polyurethane reduces unwanted flex, helping improve steering response, stability and suspension control.
– Comfort Maintained: Engineered to improve steering feedback and control while retaining a comfortable road-going ride.
– No Grease Required: Polybush products are designed for dry fitting, meaning no messy greasing during installation.
– Made in the UK: Manufactured entirely in the UK using Polybush’s specialist polyurethane formulations and production processes.
Key Benefits at a Glance:
– Direct replacement for your original suspension bushes.
– Improved suspension control and drivability
– Resistant to wear, chemicals, oil, UV and weathering
– Suitable for daily drivers, fast-road vehicles, classic cars, 4x4s and commercial applications
– Manufactured in the UK
– ISO 9001 accredited quality system
Ideal for:
– Daily Driven Vehicles: Restore suspension performance while maintaining OE-style comfort.
– Fast Road or Lightly Modified Cars: Improve suspension control without unnecessarily compromising ride quality.
– Classic or Older Models: Replace degraded, cracked or perished original rubber bushes with a durable polyurethane alternative.
– Fleet, Commercial, or 4×4 Vehicles: Improve durability and maintain consistent suspension performance in demanding applications.
Upgrade your bushes today with Polybush – A long-lasting, British-made solution for sharper handling and reliable comfort.
– Trusted UK Manufacturer – Polybush
