Powerflex PFR5-4625 Rear Differential Front Mount Poly Bush Kit (Pack of 2) for BMW E46 3 Series Compact 316ti/318ti

PFR5-4625 Polyurethane Front Mounts for E46 Compact Differential

Part number: PFR5-4625

Diagram reference: 25

Quantity in kit: 2 bushes

Transform the rear end of your BMW E46 3 Series Compact 316ti and 318ti with this uprated polyurethane front differential mounting kit. Swapping out tired rubber for performance-grade poly keeps the diff securely located, cuts unwanted movement under load and delivers cleaner power transfer to the road. Expect crisper turn in, better traction out of bends, more stable braking and more consistent alignment that protects your tyres on fast road and track day use.

Why this upgrade works

• Locks down the front of the differential to reduce drivetrain wind-up and wheel hop
• Improves rear axle precision for predictable handling and sharper response
• Helps eliminate knocks and clunks from the diff nose area during acceleration and gear changes
• Polyurethane construction resists oil, ageing and deformation for long-term performance
• Keeps geometry stable which can reduce uneven tyre wear
• Covered by the Powerflex lifetime warranty

Fitment

Designed for BMW E46 3 Series Compact models 316ti and 318ti. These bushes replace the two front mounting positions for the rear differential on the Compact platform.

What is included

• 2 x front diff mounting bushes - PFR5-4625
• Hardware and assembly grease as supplied by the manufacturer

Proven on our cars and customers’ builds

We run these on our own E46 projects and have installed them for many customers. Feedback is consistently positive, highlighting tighter rear-end control, improved stability under hard acceleration and braking, and greater confidence on B-roads and at track days.

Common issues this kit helps solve

• Rear end wandering or vague feel mid corner
• Clunking noises from the diff nose when taking up drive
• Axle tramp and wheel hop on launches or rough surfaces
• Premature or uneven tyre wear due to excessive movement

Professional fitting

Want it installed properly the first time We can help. Book fitting with MJ Modifications in Warwickshire. For a quote or to schedule your car in, email info@mjmodifications.co.uk.

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