Home› Driveline and Axles > CV Boots and Related Components› GKN Loebro 305121 CV Joint Boot Kit - Front Inner, Front Left Inner or Front Right Inner
GKN Loebro 305121 CV Joint Boot Kit - Front Inner, Front Left Inner or Front Right InnerOE Quality 60-Day Returns
GKN Loebro 305121 CV Joint Boot Kit - Front Inner, Front Left Inner or Front Right Inner - view 1
GKN Loebro 305121 CV Joint Boot Kit - Front Inner, Front Left Inner or Front Right Inner - view 2
GKN Loebro 305121 CV Joint Boot Kit - Front Inner, Front Left Inner or Front Right Inner - view 3
Part #: 305121

GKN Loebro 305121 CV Joint Boot Kit - Front Inner, Front Left Inner or Front Right Inner

Front Right Inner, Front Left Inner, and Front Inner
⚙️ 191 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$19.35Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Audi and Volkswagen, A4, A4 Quattro, A6, A6 Quattro, A8 Quattro, Beetle, RS4, S4, and S8
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? Click here for all CV Joint Boot Kit options

Reliable CV Joint Boot Kit for Audi and Volkswagen Models

The GKN Loebro CV Joint Boot Kit 305121 is designed to provide durable protection for the driveline components of select Audi and Volkswagen vehicles. Engineered with quality rubber material, this solid black boot ensures a secure fit and long-lasting performance for your A4, A6, S4, and other compatible models.

  • Joint End Inside Diameter: 3.188 inches
  • Shaft End Inside Diameter: 0.826 inches
  • Single rib design for secure sealing
  • Constructed from durable rubber material
  • Solid type boot, not split
  • Black color for standard OEM appearance
  • Non-vented boot design

Durable Construction and Precise Fitment

This CV joint boot kit from GKN Loebro is crafted from high-quality rubber to resist wear, cracking, and environmental damage. The solid boot design with a single rib ensures a tight seal around the joint and shaft ends, preventing dirt, moisture, and debris from compromising the CV joint. With a joint end inside diameter of 3.188 inches and a shaft end inside diameter of 0.826 inches, this boot kit is engineered to fit specific Audi and Volkswagen models accurately, including the A4, A4 Quattro, A6, A6 Quattro, A8 Quattro, Beetle, RS4, S4, and S8.

Compatible Vehicles and Applications

This CV joint boot kit 305121 is compatible with a range of Audi and Volkswagen vehicles, making it suitable for maintenance and repair of driveline components on:

  • Audi A4 and A4 Quattro
  • Audi A6 and A6 Quattro
  • Audi A8 Quattro
  • Audi RS4, S4, and S8
  • Volkswagen Beetle

Common Issues Addressed by This CV Joint Boot Kit

  • Prevents grease leakage from the CV joint
  • Protects CV joint from dirt and moisture intrusion
  • Reduces risk of premature joint wear and failure
  • Maintains driveline performance and smooth operation
  • Helps avoid costly CV joint replacements

Installation Notes and Tips

Ensure the CV joint and shaft ends are clean and free of debris before installing the boot. The solid boot design requires careful stretching over the joint and shaft ends to avoid damage. Use appropriate clamps (not included) to secure the boot in place. Verify the boot is seated properly to maintain an effective seal and prevent contamination.

Quality Assurance and Warranty

GKN Loebro manufactures this CV joint boot kit to meet OEM specifications for fit and durability. The rubber material and precise dimensions ensure reliable protection for your driveline components. While specific warranty details are not provided, GKN Loebro products are generally backed by quality standards consistent with automotive industry requirements.

BrandGKN Loebro
Part Number305121
Joint End Inside Diameter3.188
Shaft End Inside Diameter0.826
Rib Quantity1
Boot MaterialRubber
Vented BootNo
Boot ColorBlack
Split Or Solid TypeSolid

This part fits 191 vehicles. Search below:

YearMakeModelBody TypeDrive TypeTransmissionLitersCylindersPositionNotes
2011AudiA6FWD3.2LV6Front Right Inner
2011AudiA6FWD3.2LV6Front Left Inner
2011AudiA6 QuattroAWD4.2LV8Front Right Inner
2011AudiA6 QuattroAWD4.2LV8Front Left Inner
2011AudiA6 QuattroAWD3.0LV6Front Right Inner
2011AudiA6 QuattroAWD3.0LV6Front Left Inner
2010AudiA6FWD3.2LV6Front Right Inner
2010AudiA6FWD3.2LV6Front Left Inner
2010AudiA6 QuattroAWD4.2LV8Front Right Inner
2010AudiA6 QuattroAWD4.2LV8Front Left Inner
2010AudiA6 QuattroAWD3.0LV6Front Right Inner
2010AudiA6 QuattroAWD3.0LV6Front Left Inner
2010AudiA8 QuattroAWDAutomatic4.2LV8Front Right Inner
2010AudiA8 QuattroAWDAutomatic4.2LV8Front Left Inner
2009AudiA4ConvertibleFWD2.0LL4Front Right Inner
2009AudiA4ConvertibleFWD2.0LL4Front Left Inner
2009AudiA4 QuattroConvertibleAWD3.2LV6Front Right Inner
2009AudiA4 QuattroConvertibleAWD3.2LV6Front Left Inner
2009AudiA6FWD3.2LV6Front Right Inner
2009AudiA6FWD3.2LV6Front Left Inner
2009AudiA6 QuattroAWD4.2LV8Front Right Inner
2009AudiA6 QuattroAWD4.2LV8Front Left Inner
2009AudiA6 QuattroAWD3.0LV6Front Right Inner
2009AudiA6 QuattroAWD3.0LV6Front Left Inner
2009AudiA8 QuattroAWD6.0LW12Front Right InnerFits official, special, rental, and standard vehicles including CV Joint Boot Kit [F5B, F0A, F4F]
2009AudiA8 QuattroAWD6.0LW12Front Left Inner
2009AudiA8 QuattroAWD4.2LV8Front Right Inner
2009AudiA8 QuattroAWD4.2LV8Front Left Inner
2009AudiS4ConvertibleAWD4.2LV8Front Right Inner
2009AudiS4ConvertibleAWD4.2LV8Front Left Inner
2009AudiS8AWD5.2LV10Front Left Inner
2009AudiS8AWDAutomatic5.2LV10Front Right InnerFits official, special, rental, and standard vehicles including CV Joint Boot Kit [F5B, F0A, F4F]
2008AudiA4SedanFWD3.2LV6Front Right Inner
2008AudiA4SedanFWD3.2LV6Front Left Inner
2008AudiA4SedanFWD2.0LL4Front Right Inner
2008AudiA4SedanFWD2.0LL4Front Left Inner
2008AudiA4ConvertibleFWD2.0LL4Front Right Inner
2008AudiA4ConvertibleFWD2.0LL4Front Left Inner
2008AudiA4 QuattroWagonAWDAutomatic3.2LV6Front Right Inner
2008AudiA4 QuattroWagonAWDAutomatic3.2LV6Front Left Inner
2008AudiA4 QuattroSedanAWDAutomatic3.2LV6Front Right Inner
2008AudiA4 QuattroSedanAWDAutomatic3.2LV6Front Left Inner
2008AudiA4 QuattroConvertibleAWDAutomatic3.2LV6Front Right Inner
2008AudiA4 QuattroConvertibleAWDAutomatic3.2LV6Front Left Inner
2008AudiA6FWD3.2LV6Front Right Inner
2008AudiA6FWD3.2LV6Front Left Inner
2008AudiA6 QuattroAWD4.2LV8Front Right Inner
2008AudiA6 QuattroAWD4.2LV8Front Left Inner
2008AudiA6 QuattroAWD3.2LV6Front Right Inner
2008AudiA6 QuattroAWD3.2LV6Front Left Inner
2008AudiA8 QuattroAWD6.0LW12Front Right InnerFits official, special, rental, and standard vehicles including CV Joint Boot Kit [F5B, F0A, F4F]
2008AudiA8 QuattroAWD6.0LW12Front Left Inner
2008AudiA8 QuattroAWD4.2LV8Front Right Inner
2008AudiA8 QuattroAWD4.2LV8Front Left Inner
2008AudiRS4SedanAWD4.2LV8Front Right Inner
2008AudiRS4SedanAWD4.2LV8Front Left Inner
2008AudiRS4ConvertibleAWD4.2LV8Front Right Inner
2008AudiRS4ConvertibleAWD4.2LV8Front Left Inner
2008AudiS4WagonAWD4.2LV8Front Right Inner
2008AudiS4WagonAWD4.2LV8Front Left Inner
2008AudiS4SedanAWD4.2LV8Front Right Inner
2008AudiS4SedanAWD4.2LV8Front Left Inner
2008AudiS4ConvertibleAWD4.2LV8Front Right Inner
2008AudiS4ConvertibleAWD4.2LV8Front Left Inner
2008AudiS8AWD5.2LV10Front Left Inner
2008AudiS8AWDAutomatic5.2LV10Front Right InnerFits official, special, rental, and standard vehicles including CV Joint Boot Kit [F5B, F0A, F4F]
2007AudiA4SedanFWD3.2LV6Front Right Inner
2007AudiA4SedanFWD3.2LV6Front Left Inner
2007AudiA4SedanFWD2.0LL4Front Right Inner
2007AudiA4SedanFWD2.0LL4Front Left Inner
2007AudiA4ConvertibleFWD2.0LL4Front Right Inner
2007AudiA4ConvertibleFWD2.0LL4Front Left Inner
2007AudiA4 QuattroWagonAWDAutomatic3.2LV6Front Right Inner
2007AudiA4 QuattroWagonAWDAutomatic3.2LV6Front Left Inner
2007AudiA4 QuattroSedanAWDAutomatic3.2LV6Front Right Inner
2007AudiA4 QuattroSedanAWDAutomatic3.2LV6Front Left Inner
2007AudiA4 QuattroConvertibleAWDAutomatic3.2LV6Front Right Inner
2007AudiA4 QuattroConvertibleAWDAutomatic3.2LV6Front Left Inner
2007AudiA6FWD3.2LV6Front Right Inner
2007AudiA6FWD3.2LV6Front Left Inner
2007AudiA6 QuattroAWD4.2LV8Front Right Inner
2007AudiA6 QuattroAWD4.2LV8Front Left Inner
2007AudiA6 QuattroAWD3.2LV6Front Right Inner
2007AudiA6 QuattroAWD3.2LV6Front Left Inner
2007AudiA8 QuattroAWD6.0LW12Front Right InnerFits official, special, rental, and standard vehicles including CV Joint Boot Kit [F5B, F0A, F4F]
2007AudiA8 QuattroAWD6.0LW12Front Left InnerFits official, special, rental, and standard vehicles including CV Joint Boot Kit [F5B, F0A, F4F]
2007AudiA8 QuattroAWD4.2LV8Front Right Inner
2007AudiA8 QuattroAWD4.2LV8Front Left Inner
2007AudiRS4AWD4.2LV8Front Right Inner
2007AudiRS4AWD4.2LV8Front Left Inner
2007AudiS4WagonAWD4.2LV8Front Right Inner
2007AudiS4WagonAWD4.2LV8Front Left Inner
2007AudiS4SedanAWD4.2LV8Front Right Inner
2007AudiS4SedanAWD4.2LV8Front Left Inner
2007AudiS4ConvertibleAWD4.2LV8Front Right Inner
2007AudiS4ConvertibleAWD4.2LV8Front Left Inner
2007AudiS8AWDAutomatic5.2LV10Front Right InnerFitment note: Official vehicle/special vehicle [F5B], no special purpose vehicle, standard equipment [F0A], rental car equipment [F4F].
2007AudiS8AWDAutomatic5.2LV10Front Left InnerFitment note: Official vehicle/special vehicle [F5B], no special purpose vehicle, standard equipment [F0A], rental car equipment [F4F].
2006AudiA4SedanFWD3.2LV6Front Right Inner
2006AudiA4SedanFWD3.2LV6Front Left Inner
2006AudiA4SedanFWD2.0LL4Front Right Inner
2006AudiA4SedanFWD2.0LL4Front Left Inner
2006AudiA4ConvertibleFWD1.8LL4Front Right Inner
2006AudiA4ConvertibleFWD1.8LL4Front Left Inner
2006AudiA4 QuattroAWDAutomatic3.2LV6Front Right Inner
2006AudiA4 QuattroAWDAutomatic3.2LV6Front Left Inner
2006AudiA4 QuattroConvertibleAWD3.0LV6Front Right InnerFitment note: Fits vehicles with VIN starting with 8H-4-014 951.
2006AudiA4 QuattroConvertibleAWD3.0LV6Front Left InnerFitment note: Fits vehicles with VIN starting with 8H-4-014 951.
2006AudiA6FWD3.2LV6Front Right Inner
2006AudiA6FWD3.2LV6Front Left Inner
2006AudiA6 QuattroAWD4.2LV8Front Right Inner
2006AudiA6 QuattroAWD4.2LV8Front Left Inner
2006AudiA6 QuattroAWD3.2LV6Front Right Inner
2006AudiA6 QuattroAWD3.2LV6Front Left Inner
2006AudiA8 QuattroAWD6.0LW12Front Right InnerFits official, special, rental, and standard vehicles including CV Joint Boot Kit [F5B, F0A, F4F]
2006AudiA8 QuattroAWD6.0LW12Front Left InnerFits official, special, rental, and standard vehicles including CV Joint Boot Kit [F5B, F0A, F4F]
2006AudiS4AWD4.2LV8Front Right Inner
2006AudiS4AWD4.2LV8Front Left Inner
2005AudiA4SedanFWD3.0LV6Front Right InnerFrom vin 8E-4-195 501
2005AudiA4SedanFWD3.0LV6Front Left InnerFrom vin 8E-4-195 501
2005AudiA4ConvertibleFWD3.0LV6Front Right InnerFitment note: Fits vehicles with VIN starting with 8H-4-014 951.
2005AudiA4ConvertibleFWD3.0LV6Front Left InnerFitment note: Fits vehicles with VIN starting with 8H-4-014 951.
2005AudiA4SedanFWD2.0LL4Front Right Inner
2005AudiA4SedanFWD2.0LL4Front Left Inner
2005AudiA4WagonFWD1.8LL4Front Right InnerFrom vin 8E-4-195 501
2005AudiA4WagonFWD1.8LL4Front Right InnerFrom vin 8E-4-000 001
2005AudiA4WagonFWD1.8LL4Front Left InnerFrom vin 8E-4-195 501
2005AudiA4WagonFWD1.8LL4Front Left InnerFrom vin 8E-4-000 001
2005AudiA4SedanFWD1.8LL4Front Right InnerFrom vin 8E-4-195 501
2005AudiA4SedanFWD1.8LL4Front Right InnerFrom vin 8E-4-000 001
2005AudiA4SedanFWD1.8LL4Front Left InnerFrom vin 8E-4-195 501
2005AudiA4SedanFWD1.8LL4Front Left InnerFrom vin 8E-4-000 001
2005AudiA4ConvertibleFWD1.8LL4Front Right InnerFitment note: Fits vehicles with VIN starting with 8H-4-014 951.
2005AudiA4ConvertibleFWD1.8LL4Front Left InnerFitment note: Fits vehicles with VIN starting with 8H-4-014 951.
2005AudiA4 QuattroAWDAutomatic3.2LV6Front Right Inner
2005AudiA4 QuattroAWDAutomatic3.2LV6Front Left Inner
2005AudiA4 QuattroAWD3.0LV6Front Inner
2005AudiA4 QuattroAWDAutomatic1.8LL4Front Right InnerFrom vin 8E-4-195 501
2005AudiA4 QuattroAWDAutomatic1.8LL4Front Left InnerFrom vin 8E-4-195 501
2005AudiA6 QuattroAWD4.2LV8Front Right Inner
2005AudiA6 QuattroAWD4.2LV8Front Left Inner
2005AudiA6 QuattroAWD3.2LV6Front Right Inner
2005AudiA6 QuattroAWD3.2LV6Front Left Inner
2005AudiA8 QuattroAWD6.0LW12Front Right InnerFits official, special, rental, and standard vehicles including CV Joint Boot Kit [F5B, F0A, F4F]
2005AudiA8 QuattroAWD6.0LW12Front Left InnerFits official, special, rental, and standard vehicles including CV Joint Boot Kit [F5B, F0A, F4F]
2005AudiA8 QuattroAWD4.2LV8Front Right InnerFits official, special, rental, and standard vehicles including CV Joint Boot Kit [F5B, F0A, F4F]
2005AudiA8 QuattroAWD4.2LV8Front Left InnerFits official, special, rental, and standard vehicles including CV Joint Boot Kit [F5B, F0A, F4F]
2005AudiS4AWD4.2LV8Front Inner
2005VolkswagenBeetleHatchbackFWDAutomatic2.0LL4Front Right Inner
2005VolkswagenBeetleHatchbackFWDAutomatic2.0LL4Front Left Inner
2005VolkswagenBeetleHatchbackFWDAutomatic1.8LL4Front Right Inner
2005VolkswagenBeetleHatchbackFWDAutomatic1.8LL4Front Left Inner
2005VolkswagenBeetleConvertibleFWDAutomatic1.8LL4Front Right Inner
2005VolkswagenBeetleConvertibleFWDAutomatic1.8LL4Front Left Inner
2004AudiA4WagonFWD3.0LV6Front Right InnerFrom vin 8E-4-195 501
2004AudiA4WagonFWD3.0LV6Front Left InnerFrom vin 8E-4-195 501
2004AudiA4SedanFWD3.0LV6Front Right InnerFrom vin 8E-4-195 501
2004AudiA4SedanFWD3.0LV6Front Left InnerFrom vin 8E-4-195 501
2004AudiA4ConvertibleFWD3.0LV6Front Right InnerFitment note: Fits vehicles with VIN starting with 8H-4-014 951.
2004AudiA4ConvertibleFWD3.0LV6Front Left InnerFitment note: Fits vehicles with VIN starting with 8H-4-014 951.
2004AudiA4WagonFWD1.8LL4Front Right InnerFrom vin 8E-4-195 501
2004AudiA4WagonFWD1.8LL4Front Right InnerFrom vin 8E-4-000 001
2004AudiA4WagonFWD1.8LL4Front Left InnerFrom vin 8E-4-195 501
2004AudiA4WagonFWD1.8LL4Front Left InnerFrom vin 8E-4-000 001
2004AudiA4SedanFWD1.8LL4Front Right InnerFrom vin 8E-4-195 501
2004AudiA4SedanFWD1.8LL4Front Right InnerFrom vin 8E-4-000 001
2004AudiA4SedanFWD1.8LL4Front Left InnerFrom vin 8E-4-195 501
2004AudiA4SedanFWD1.8LL4Front Left InnerFrom vin 8E-4-000 001
2004AudiA4ConvertibleFWD1.8LL4Front Right InnerFitment note: Fits vehicles with VIN starting with 8H-4-014 951.
2004AudiA4ConvertibleFWD1.8LL4Front Left InnerFitment note: Fits vehicles with VIN starting with 8H-4-014 951.
2004AudiA4 QuattroAWD3.0LV6Front InnerCV Joint Boot Kit for a rubber boot.
2004AudiA4 QuattroAWDAutomatic1.8LL4Front Right InnerFrom vin 8E-4-195 501; From Vin 8E-2-000 001; To Vin 8E-5-400 000
2004AudiA4 QuattroAWDAutomatic1.8LL4Front Left InnerFrom vin 8E-4-195 501; From Vin 8E-2-000 001; To Vin 8E-5-400 000
2004AudiA8 QuattroAWD4.2LV8Front Right InnerFits official, special, rental, and standard vehicles including CV Joint Boot Kit [F5B, F0A, F4F]
2004AudiA8 QuattroAWD4.2LV8Front Left InnerFits official, special, rental, and standard vehicles including CV Joint Boot Kit [F5B, F0A, F4F]
2004AudiS4AWD4.2LV8Front Inner
2004VolkswagenBeetleHatchbackFWDAutomatic2.0LL4Front Inner
2004VolkswagenBeetleHatchbackFWDAutomatic1.9LL4Front Right Inner
2004VolkswagenBeetleHatchbackFWDAutomatic1.9LL4Front Left Inner
2004VolkswagenBeetleHatchbackFWDAutomatic1.8LL4Front Right Inner
2004VolkswagenBeetleHatchbackFWDAutomatic1.8LL4Front Left Inner
2004VolkswagenBeetleConvertibleFWDAutomatic1.8LL4Front Right Inner
2004VolkswagenBeetleConvertibleFWDAutomatic1.8LL4Front Left Inner
2003VolkswagenBeetleHatchbackFWDAutomatic2.0LL4Front Right Inner
2003VolkswagenBeetleHatchbackFWDAutomatic2.0LL4Front Left Inner
2003VolkswagenBeetleHatchbackFWDAutomatic1.9LL4Front Right Inner
2003VolkswagenBeetleHatchbackFWDAutomatic1.9LL4Front Left Inner
2003VolkswagenBeetleHatchbackFWDAutomatic1.8LL4Front Right Inner
2003VolkswagenBeetleHatchbackFWDAutomatic1.8LL4Front Left Inner
2003VolkswagenBeetleConvertibleFWDAutomatic1.8LL4Front Right Inner
2003VolkswagenBeetleConvertibleFWDAutomatic1.8LL4Front Left Inner

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

4E0498201

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

Related Articles