Description
Front Engine Mount Insert Kit - PFF5-4021
We are pleased to introduce PFF5-4020 and PFF5-4021 Engine Mount Insert Kits, intermediate alternatives to the BMW aluminium inserts and much stiffer full replacement engine mounts available on the aftermarket. Made in our Yellow 70A durometer material, they are designed to fit the voiding of the OE mounts snuggly to restrict engine movement with a minimal increase in NVH, perfect for those with tuned road cars. Their design and flexibility also mean they can be fitted to the vehicle without removing the engine mounts themselves. Reducing engine/transmission movement by way of upgraded inserts has the following benefits: - Sharper throttle response - Improved gear shifting - More direct power transfer - More balanced on/off throttle handling - Prolonged life of the OE mounts. A small increase in NVH, usually at idle, should be expected when stiffening the connecting mount between the engine and chassis. The harder the material used, the greater the NVH transmittedDiagram Reference
20Compound
Road SeriesLocation on Vehicle
FrontAdjustment
Fixed






Included in the Kit:
1 x PFF5-4021 - Engine Mount Insert Kit
Replaces Part Numbers
31 12 6 854 729 - 31126854729 - 6 854 729 - 6854729
31 12 6 854 723 - 31126854723 - 6 854 723 - 6854723
31 12 6 854 724 - 31126854724 - 6 854 724 - 6854724
Series / Chassis
F20 / F20N / F21 / F21N / F22 / F22N / F23 / F23N / F30 / F30N / F31 / F31N / F32 / F32N / F33 / F33N / F34 / F34N / F35 / F35N / F36 / F36NModels
118dX / 120dX / 220dX / 228iX / 230iX / 318dX / 320dX / 320iX / 320LiX / 328dX / 328iX / 328LiX / 330dX / 330iX / 330LiX / 335dX / 335iX / 340iX / 420dX / 420iX / 428iX / 430dX / 430iX / 435dX / 435iX / 440iX / M135iX / M140iXEngines
B46 / B47 / B48 / B58 / N20 / N26 / N47N / N55 / N57N / N57ZTo fit the following vehicles
F80 S55 M3 SaloonF80N S55 M3 Saloon
F82 S55 M4 Coupe
F82 S55 M4 GTS Coupe
F82N S55 M4 Coupe
F82N S55 M4 CS Coupe
F83 S55 M4 Convertible
F83N S55 M4 Convertible
F87 N55 M2 Coupe
F87N N55 M2 Coupe
F87N S55 M2 Competition Coupe
MOSP S55 M4 GT4 Coupe
Estimated Fitting Costs
Darkside Developments offers professional in-house fitting at our workshop for all products
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| For more information, or to make a booking, please contact us. |










