How to Replace the Front Lower Arm Bush on a New Defender, Discovery 5 & Range Rover (1DU Polybush)

In this video, we show you how to remove the original rubber bush and fit a Polybush 1DU Front Lower Front Arm Bush into a genuine Land Rover front lower arm.

This bush fits arms with OE references:
LR034219, LR073465, LR072470, LR109039, LR072471, LR113307, LR073463, LR113703, LR109038, LR126102, LR113306, LR113702, LR126101, LR034220, LR072468, LR072469

Compatible with:
• Land Rover Defender L663 (2020-onwards)
• Land Rover Discovery 5 L462 (2017-onwards)
• Range Rover L405 (2012–2022)
• Range Rover Sport L494 (2013–2022)

We see failed rubber bushes on these vehicles far more often than owners expect. Sometimes they’re visibly split, sometimes they’re oil-soaked, and sometimes they look fine until they’re pressed out — then the damage becomes obvious.

One owner put it perfectly:
“It didn’t feel broken, but it never drove properly until I fitted yours.”

When this bush starts to fail, it has a big impact on how these vehicles drive:
• Vague or wandering steering
• Knocks or clunks under braking and acceleration
• Reduced braking stability
• Loss of confidence at speed or when towing
• A front end that simply doesn’t feel planted

That’s a real problem on vehicles designed to be stable, precise and incredibly capable.

Why Polybush instead of rubber?
Rubber degrades with age, heat and oil contamination — all things these heavy, powerful vehicles generate plenty of. Polyurethane doesn’t. A Polybush:
• Maintains proper suspension geometry
• Improves steering response and braking feel
• Resists oil, heat and deformation
• Lasts significantly longer than rubber

This upgrade isn’t about making the ride harsh — it’s about restoring control, stability and confidence to the front end, and keeping it that way.

👉 Buy the 1DU Front Lower Front Arm Bush here:
https://www.polybush.co.uk/shop/