Restore Proper Quattro AWD Performance

Your front CV axles are critical in Audi’s AWD system, constantly transferring power while handling steering and suspension movement. When they fail, you’ll notice:

• Clicking or popping during turns
• Vibration under acceleration
• Grease leaking from torn CV boots
• Rough or uneven power delivery

Replacing both axles restores smooth, balanced power distribution—like your Audi before maintenance got ignored.

Vehicle Compatibility (Yes, It’s a Lot—Read Carefully)

Designed for multiple Audi Quattro platforms:

Fits:

• Audi A6 Quattro (2.0L / 3.0L)
• Audi A7 Quattro (2.0L / 3.0L)
• Audi Q5 / SQ5 (3.0L)
• Audi A8 / S8 (4.0L / 4.2L / 6.3L)
• Audi S6 / S7 (4.0L)
• Audi RS7 (4.0L)

Drivetrain: Quattro AWD ONLY
Position: Front Left (Driver) + Front Right (Passenger)
Replace Part Numbers: 4G0407271F, 66-7451
Package Includes: 2 CV Axle Shaft Assemblies

Not for FWD models. Not for guessing. This is Audi—we check everything.

Reference OE Number – 4G0407271F, 4G0407451BX, 4H0407451BX, 8R0407271C, 667451, 66-7451
Specifications: Position: Front Left Right; Inner Spline Count: Bolt-Spline; Outer Spline Count: 42 Spline; Compressed Length: 493mm; ABS Ring Included: No; Axle Nut Included: Yes

Why Replace Both CV Axles?

Because Quattro doesn’t tolerate imbalance—and neither should you.

• Eliminates clicking and vibration
• Restores smooth AWD power transfer
• Improves handling and control
• Prevents uneven drivetrain wear
• Saves you from doing the same repair twice

Why Choose SCITOO CV Axles?

This set is built as a direct replacement for factory components—no modifications, no guesswork, no headaches.

Top Features:

• Complete 2-piece set (driver + passenger side)
• Direct-fit for multiple Audi Quattro models
• Replaces OE-style part numbers 4G0407271F / 66-7451
• Restores drivetrain balance and performance
• Ideal for worn, noisy, or high-mileage vehicles

Boot Features – We most effective use quality neoprene boots for our axles, top strength stretch with out breaking
Note – Please take a look at pictures, original part numbers and accessory information before buying to make sure that is the right kind information you wish to have

Installation Notes

Verify your exact model, engine, and Quattro drivetrain before ordering. Audi fitment can get complicated fast if you assume too much.

Professional installation recommended unless you enjoy German engineering challenges.

The Smart Fix for Audi Drivetrain Noise

If your A6, A7, Q5, or RS7 is clicking, vibrating, or just not driving right, this SCITOO Front CV Axle Set is the straightforward solution to restore smooth, reliable performance.

Because your Audi should feel precise—not problematic.