6 March 2026
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4 November 2025
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Advice Blog
If you own a Mk7 Fiesta – whether it’s the everyday 1.25 Zetec or a lively Ford Fiesta ST (Mk7) – there’s one suspension component that almost always crops up as a weak point: the rear axle (beam) bushes.
We supply a complete Front Wishbone & Rear Axle Bush Kit (KIT 192) for these cars, but let’s be honest – the bush that fails, knocks, creaks and causes rear-end movement time and time again is the rear beam bush. That’s why the Polybush 40BR Rear Axle Bush has become such a popular fix.
If you’re searching for:
Rear axle bushes Ford Fiesta
Mk7 Fiesta rear axle bushes
Ford Fiesta rear axle bush replacement
Rear bushes on Ford Fiesta making noise
Rear axle bushes replacement cost Ford Fiesta
…you’re in exactly the right place.
The Mk7 Fiesta uses a torsion beam rear axle. It’s a simple, strong design – great for daily driving – but it relies heavily on two large rubber bushes that mount the beam to the body.
From the factory, these bushes are soft rubber. Over time they:
Crack and split
De-bond from their outer sleeve
Soften and allow excessive movement
Start knocking when pulling away or going over bumps
Common symptoms include:
A dull thud from the rear when changing gear
Instability during braking
Rear-end “wiggle” on uneven roads
Uneven tyre wear
Vague rear suspension feel
Many owners describe it as “Fiesta movement” at the back of the car – that slight delay before the rear follows the front.
If you’ve searched for Ford Fiesta rear suspension bushes or Fiesta rear axle bushes making noise, chances are these are the culprits, and your bushes have already failed!
Our Polybush 40BR replaces the original Ford rear beam bush.
OEM Cross Reference: 1535296, 1751679, 1805815, 1805866, 1871475, 8V51-5K653-AA, AY11-5K653-AA, D65128460
Even these aftermarket bushings:
Delphi No: TD1629W
Febi No: 34748.
Unlike the factory rubber bush, the 40BR is manufactured from our specially formulated, UK-made polyurethane.
And that changes everything.
Let’s clear something up: this isn’t about turning your Fiesta into a track car. This is about making it better at being a daily driver.
Here’s why polyurethane makes sense on the rear axle:
Rubber is vulnerable to:
Oil contamination
Road salt
Heat cycling
Age hardening
Polyurethane is resistant to all of the above. It won’t crack, perish or soften in the same way. That means:
No premature failure
No repeated rear axle bush replacement
No coming back to the same job in 18 months (or sometimes as little as MOT to MOT)
If you’re looking up rear axle bushes Ford Fiesta cost, it’s worth considering the long-term picture. Fit them once. Do it properly. Our bushes are great for people who want to book their car in, get the work done and never need to look at it again. Rubber might have a low up-front cost, but replacing it every year doesn’t make financial sense.
There’s a misconception that polyurethane equals a harsh ride. That’s true of some race-spec bushes. It’s not true of ours.
The 40BR is engineered to:
Control unwanted rear beam movement
Maintain correct axle geometry
Absorb road vibration
The results?
You retain everyday ride comfort, but lose the rear-end wobble and knock. The car feels tighter and more planted, especially under braking and on roundabouts.
On a Ford Fiesta Mk7 rear axle, that balance is exactly what you want.
Even if you don’t drive a Fiesta ST, you’ll notice the difference.
More predictable rear end
Improved stability on uneven roads
Better response to steering inputs
For Fiesta ST rear axle owners, it’s even more noticeable – but for standard models, it simply makes the car feel fresher and less worn.
It’s refinement, not aggression – A product you’d be happy putting on your mum’s car.
Polyurethane behaves differently from rubber; you must replace these bushes in pairs.
Mixing one old rubber bush with one polyurethane bush will create uneven compliance across the rear axle. That can affect braking stability and handling balance.
Additionally, if one bush has failed, realistically, the other side will fail soon too. So taking the car off the road once, having one labour bill and one inconvenience is better.
As such, we supply them as matched sets. It’s the correct way to do the job… Again, do it once, do it right!
Good news: this isn’t a nightmare job.
On the Mk7 Fiesta:
The rear beam stays on the car
The old plastic-shelled bushes are hammered out
The new Polybush units are pushed in by hand
A competent DIYer with simple hand tools can tackle it at home. Alternatively, most garages charge a fairly modest amount because the job is straightforward and not time-consuming.
Compared with some bush changes, this is refreshingly simple.
If you’ve been pricing up Ford Fiesta rear axle bush replacement cost, you’ll likely find labour is reasonable – and with polyurethane, you won’t be repeating it.
On the Mk7 Fiesta, the torsion beam effectively acts as the rear subframe. When people search for rear subframe bushes Ford Fiesta or Ford Fiesta rear subframe bushes, they’re usually referring to these rear beam bushes.
Whilst we make bushes for other fiesta’s, the main focus here is the Mk7:
Owners of earlier models (like 2007 Ford Fiesta rear axle or Mk6 Fiesta rear axle bushes) will require different part numbers, all of which we have HERE
The Mk8 uses a different rear suspension layout, so the bushes differ.
However, we do offer suspension bushes for these models, you can find them HERE
If your Ford Fiesta rear suspension feels:
Noisy at the back
Loose under braking
Unsettled mid-corner
Clonking when pulling away
It’s worth inspecting the rear axle bushes Fiesta owners often overlook.
On many Mk7s, they’re worn by 60–80k miles. On cars used for short trips or city driving, sometimes sooner.
We fit them to our own daily-driving Ford Fiesta’s! We wouldn’t fit rubber again!
Not because rubber is terrible – but because it’s a consumable part in this location. The rear beam places a constant rotational load through those bushes. Polyurethane handles that load better, maintains its shape, and keeps the axle located correctly.
With Polybush, you get:
Longer service life
Improved stability
Maintained ride comfort
Better value over time
And you stop chasing rear-end noises.
Our Polybush 40BR Rear Axle Bush is a simple upgrade that solves a very common problem on the Mk7 Fiesta and Fiesta ST. Fit them as a pair, refresh the rear of the car properly, and you’ll be reminded how composed and solid a Fiesta should feel.
Sometimes the best upgrades aren’t about performance – they’re about restoring the car to how it should have felt all along.
6 March 2026
26 February 2026
