Powerflex PFF5-5601G Polyurethane Front Control Arm Rear Bushing (FCAB) - Caster/Castor Offset 66mm - BMW 3 Series E46 incl Touring & BMW Z4 - Wishbone/Lollipop Suspension Bush Pair - Replaces OE 31126783376 - Front Lower Arm Rear Mount

Polyurethane Control Arm Rear Mount, Castor Offset, BMW 3 Series E46 and BMW Z4, Pair - PFF5-5601G

Transform steering feel and chassis precision with this castor-increasing rear mount for the front lower control arm. Built to replace the OE rubber insert, this uprated polyurethane solution tightens up the front end, improves straight-line stability and delivers sharper turn-in for fast road and track day driving. Ideal for drivers chasing a more connected front axle and consistent geometry under braking and cornering.

Part number: PFF5-5601G

OEM cross-reference: 31126783376

Diagram reference: 1

Quantity: Pack of 2 bushes

Key advantages for your BMW

• Additional castor of approximately +0.5 degrees versus PFF5-5601 for better high-speed stability, quicker self-centring and crisper initial response.
• Performance upgrade over PFF5-4601 for drivers who want maximum precision from their front axle geometry.
• Hard-anodised aluminium outer with a low-friction polyurethane inner for smooth articulation and reduced binding compared with conventional bonded rubber.
• Massively cuts lower arm movement under load, keeping the alignment where it should be for reliable feedback and predictable handling.
• Measured stiffness increase of 128 percent over stock rubber. The Black Series variant adds a further 28 percent, totalling about 190 percent over OE.
• Durable polyurethane formulation controls unwanted flex while maintaining excellent NVH when installed correctly.
• Covered by the Powerflex Lifetime Warranty for long-term peace of mind.

Fitment information

• Position: rear mounting of the front lower control arm, often called the FCAB or lollipop bush.
• Vehicle compatibility: BMW 3 Series E46 including Touring, and BMW Z4 models.
• Housing size: designed for the 66 mm aluminium carrier. Please confirm your carrier size before ordering or fitting.

What you will feel on the road

• More stable braking with less tramlining and a stronger on-centre feel.
• Sharper turn-in and improved front-end bite on fast B-roads and circuits.
• More consistent alignment for better tyre contact and extended tyre life.
• Confidence-inspiring steering with clear feedback through the wheel.

Tried, tested, recommended

We run these bushes on our own builds and the difference is immediate. Customers report tighter steering, better self-centring and a more planted front end without the vagueness of tired rubber. A simple upgrade with a big impact.

In the box

• 2 x PFF5-5601G castor offset control arm rear bushes
• Grease and fitting instructions

Fitting service and support

Professional installation recommended. MJ Modifications offers fitting at our Warwickshire workshop. For a quote or to book, email info@mjmodifications.co.uk.

Search-friendly terms customers use

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