13 February 2026
Speak to one of our experts.
Speak to one of our experts.
27 January 2026
Share:
Advice Blog
If you own a Ford Fiesta Mk7 (CB1, CCN) — whether Non-ST (2008–2017) or ST (2013–2017) — chances are you’ve either experienced, or are about to experience, rear axle bush failure. The same problem also affects the Mazda 2 (DE, DH) 2007–2015, Ford B-Max (JK) 2012-on, and Ford EcoSport (CBW) 2014-on.
It’s one of those common faults that sneaks up on you. One minute the car feels fine, the next it’s vague through corners, unsettled on the brakes, and just not as tight as it used to be.
The original rear beam bushes — commonly found under OEM part numbers:
1535296, 1751679, 1805815, 1805866, 1871475, 8V51-5K653-AA, AY11-5K653-AA
…have gained a bit of a reputation, and not a good one.
The issue isn’t abuse or mileage alone — it’s the design and materials. The plastic outer shell cracks, the rubber debonds from the centre tube, and the voided rubber simply can’t cope with real-world loads for long. Once that happens, the rear axle is free to move far more than it should.
And that’s where the fun starts.
If your Fiesta Mk7 or Mazda 2 is suffering from worn rear axle bushes, you’ll usually notice:
A loose or unsettled feeling when cornering
Excessive vibration or road noise
Poor rear-end stability under braking
Reduced driver confidence and feedback
Left unchecked, worn rear beam bushes don’t just affect handling — they accelerate wear in tyres, suspension components, and braking performance, turning a relatively simple job into an expensive chain reaction.
This is exactly why we developed the Polybush 40BR rear axle bush.
Rather than replicating the weaknesses of the factory rubber bush, the 40BR is manufactured from high-quality polyurethane, engineered to resist deflection, fatigue, and debonding.
✔ Sharper, More Predictable Handling
By removing the large voids found in the OEM bush, the rear axle is properly located. The result is noticeably better cornering precision and rear-end stability — especially noticeable on Fiesta Mk7 ST models.
✔ Comfort Is Retained
This isn’t about turning your daily driver into a bone-shaker. The 40BR is tuned to control movement without introducing harshness, so ride comfort remains spot-on for road use.
✔ Improved Tyre Life & Braking Stability
Less axle movement means more consistent tyre contact and better braking confidence. It’s one of those upgrades that quietly improves everything the car does.
One of the big wins with the Polybush 40BR is installation.
Unlike some solutions, the rear axle does not need to be removed from the vehicle. We have heard the average time it takes to install is around 30 mins! That makes it a far more appealing job for:
Independent garages
Performance specialists
Competent DIYers
Less labour, fewer seized bolts, and a quicker turnaround — all without compromising on results.
If you’re replacing rear axle bushes on a Fiesta Mk7, fitting rubber again is usually just delaying the inevitable. Polyurethane doesn’t suffer from the same ageing, cracking, or debonding issues, which means:
Longer service life
More consistent performance
Less money spent redoing the same job
As we say for good reason: “Fit it once, fit Polybush.”
While the 40BR rear axle bush solves the most common rear-end issue, it’s often worth considering related components while you’re there:
Front Wishbone Bushes
40BN (Rear)
Ideal for restoring steering accuracy and braking stability.
Front Anti-Roll Bar Bush – 40BS
Helps maintain proper suspension geometry and reduces unwanted body roll.
Rear Spring Upper Anti-Squeak Pad – 40CH
A simple but effective addition when working on the rear axle, reducing noise and improving refinement.
All parts are engineered to the same exacting standards and are available directly from us.
Vehicle Sets
OE Reference: AY11-5K653-AA, 8V51-5K653-AA, 1535296, 1751679, 1805815, 1805866, 1871475
Bushes Per Vehicle Set: 2
Rear Beam Bush
Polybush 40BR – Polyurethane Suspension Upgrade (2 bushes per set)
Replaces OEM 1535296
Product Details:
Kit Contents: 2 x Polyurethane Bushes (Full Vehicle Set)
Weight: 0.81kg
Part Number: 40BR
OEM Cross Reference: 1535296, 1751679, 1805815, 1805866, 1871475, 8V51-5K653-AA, AY11-5K653-AA, D65128460
Delphi No: TD1629W
Febi No: 34748
Bush Type: Unique Top Hat
Fitment:
Ford B-Max MK6 (2012-2017)
Ford EcoSport CBW (2014-2023)
Ford Fiesta Mk7 Non ST (2008-2019)
Ford Fiesta Mk7 ST (2013-2017)
Mazda 2 DE/DH (2007-2015)
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: AY11-5K653-AA, 8V51-5K653-AA, 1535296, 1751679, 1805815, 1805866, 1871475
Bushes Per Vehicle Set: 2
