Softer Red 65A material for less NVH, PFF85-504R fits both standard diesel vehicles and gasoline engines up to 2008.5. Great for daily driver.

Yellow 70A material, PFF85-504 is recommended for standard/mildly tuned gasoline engine vehicles and tuned diesel vehicles up to 2008.5.

Purple 80A material, PFF85-504P is recommended for track driven and higher-tuned vehicles up to 2008.5.

Black Series 95A  material, PFF85-504BLK is designed for the dedicated track cars, ready to race up to 2008.5.

For vehicles after 2008.5, use PFF85-704.

Diagram Reference: #4

OE / OEM Cross Reference Numbers: 1K0199867 / 1K0199868

Fits: 
Vehicles up to 2008.5
Audi
TT Mk2 (2007-2008.5)
A3 MK2 8P Inc. Quattro (2003-2008.5)
S3 MK2 8P (2006-2008.5)

Volkswagen
CC (2008-2008.5)
Eos
Golf Mk5 Incl. GTI/R32 (2003-2008.5)
Golf Mk6 (2009-2008.5)
Jetta / Rabbit Mk5 (2005-2008.5)
Passat Mk6 B6 & B7 TYP3C (2006-2008.5)
Scirocco Mk3 (2008-2008.5)
Tiguan 5N (2007-2008.5)

Powerflex is a truly engineered product, not just a copy of the stock part in a different material. Redesigned to address common factory failure parts, Powerflex bushings allow the articulation required to maintain control of movement for increased performance while far outlasting the stock parts they are replacing. Additionally, Powerflex Engineering Line products for some fitments include unique features like polyurethane monoballs and offset geometry to provide ultimate performance without the harshness of metallic race parts. Powerflex polyurethane engine/drivetrain mounts and reinforcements are available for some fitments to reduce movement for better throttle response and more power to the wheels.

Bushings are produced in one of three durometers – Yellow (70A, approximately 25% stiffer than stock), Purple (80A, approximately 30% stiffer than stock), and Black (95A, approximately 80% stiffer than stock). Unlike other brands using only one urethane grade for all applications, Powerflex design engineers choose the correct hardness to allow for the specific movement or rigidity required for each location while minimizing unwanted NVH.