16 October 2025
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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
Front Lower Wishbone Rear Bush
Polybush 1BH – Polyurethane Suspension Upgrade (2 bushes per set)
Replaces OEM RBX500291
Product Details:
Kit Contents: 2 x Polyurethane Bushes (Full Vehicle Set)
Weight: 1.83kg
Part Number: 1BH
OEM Cross Reference: RBX500291, LR051586, LR025159, LR073366
Delphi No: TD1377W
Febi No: 47573
Bush Type: Top Hat
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 bushes last significantly longer than standard rubber – they are resistant to oil, road grime, and age-related cracking.
– Improved Handling: Firmer than rubber, they reduce unwanted flex and improve steering response and stability, especially under cornering loads.
– Comfort Maintained: Engineered to retain OE ride comfort while improving feedback and control – ideal for fast-road, touring or heavy load conditions.
– No Grease Required: Unlike other polyurethane bushes, Polybush products are dry-fit, meaning no messy greasing or squeaking over time.
– Made in the UK: Manufactured to high tolerances in the UK using our unique polyurethane blend.
Key Benefits at a Glance:
– Direct replacement for your original suspension bushes.
– Sold as a full vehicle set – No need to buy multiple sets
– Maintains comfort while improving drivability
– Resistant to wear, chemicals, oil, UV, and weather – perfect for daily drivers and performance builds alike
– Backed by the Polybush reputation for quality. ISO:9001
Ideal for:
– Daily Driven Vehicles looking to maintain or restore OE comfort and performance
– Fast Road or Lightly Modified Cars needing better control without sacrificing ride quality
– Classic or Older Models where OE rubber has degraded or split
– Fleet, Commercial, or 4×4 Vehicles needing durable and consistent suspension performance
Upgrade your bushes today with Polybush – A long-lasting, British-made solution for sharper handling and reliable comfort.
– In Stock – Fast Dispatch
– Trusted UK Manufacturer – Polybush
Vehicle Sets
OE Reference: RBX500291
Bushes Per Vehicle Set: 2
