Audi S4 Drivetrains

Our CV Joint Boots provide various methods of eliminating the removal of the CV joint during installation. Uni-Fit boots can be stretched over the CV Joint and Quick Boots come in halves.

Product Features:

• Direct replacement – this CV joint boot kit contains the parts required to repair the CV joint on specified vehicles without removing the joint itself
• Ideal solution – this kit is a reliable replacement for original components that have failed due to wear
• Durable construction – this kit is made from quality components to ensure reliable performance and a long service life
• Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

This axle bolt is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:

• Direct replacement – this axle bolt matches the fit and function of the factory part on specified years, makes and models
• Ideal solution – this bolt is a reliable replacement for an original part that is missing or has failed due to fatigue
• Durable construction – this part is made from quality materials to ensure reliable performance and long service life
• Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

This drive shaft repair kit is designed to match the original hardware required to repair the drive shaft on specified vehicles. Made of quality components, this kit is engineered for reliable performance and durability.

Product Features:

• Direct replacement – this drive shaft repair kit is designed to match the original hardware required to repair the drive shaft on specified vehicle
• Ideal solution – this kit is a reliable replacement for original components that have failed due to fatigue
• Durable construction – this kit is made from quality components to ensure reliable performance and a long service life
• Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

• Designed to repair damaged, grooved or worn shafts
• Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
• Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
• Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
• Easy to install with removable flange and installation tool
• Installation tool reduces sleeve distortion and allows for installation without removal from the shaft

Boot kits protect a joint in the car that would be destroyed by dirt, sand and other particles if left exposed, even under normal conditions so it’s important that they be properly maintained and in good condition. Rein automotive application specific inner and outer axle boot kits come complete with everything needed to do a proper installation, including OE grease and all the hardware needed for a guaranteed fit the first time.

Product Features:

• Comes with all the needed hardware for the complete repair; clamps, washers, clips, etc.
• Comes with the OE grease
• Boot manufactured with highest quality materials to prevent cracking, wear and leaking
• Matches original equipment design specifications

Product Features:

• Brand may vary by location

We’ve squeezed innovation into every ounce of Valvoline FlexFill SAE 75W-90 Full Synthetic Gear Oil, the ultimate gear protection in hypoid rear differentials and non-synchronized manual transmissions. Our unique new flexible pouch makes getting into the tightest places to lubricate gears easier than ever and with less waste. The superior detergent package-based formulation contains fully synthetic basestocks and special additives that help protect parts from rust and corrosion while providing exceptional high and low temperature protection and excellent thermal stability, especially in demanding driving situations such as towing and off-roading. It contains an extreme pressure additive for better load carrying capacity, wear resistance additives that assist in protecting gear teeth, a limited slip additive for optimal clutch pack performance, and an anti-foaming agent for better lubrication and service life. Valvoline FlexFill SAE 75W-90 Full Synthetic Gear Oil is recommended for use in axle applications requiring factory-fill or drain-and-fill levels for limited slip performance.

Product Features:

• FLEXIBLE POUCH FOR EASIER USE WITH LESS WASTE in tight, hard to reach undercarriage situations.
• EXCEPTIONAL HIGH AND LOW TEMPERATURE PROTECTION ranging from -30F to 300F degrees for dependable coverage year-round
• REDUCES CHATTERING AND PROTECTS GEAR TEETH from oxidation, rust, and wear
• MEETS THE DEMANDS OF CONVENTIONAL AND LIMITED SLIP REAR DIFFERENTIALS where API GL-5 is specified, as well as non-synchronized manual transmissions that require API GL-4 or MT-1 fluid
• MEETS OR EXCEEDS PERFORMANCE REQUIREMENTS for Mack GO-H and GO-J; API GL-5 and API MT-1; MIL-PRF-2105E; and SAE J2360

National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

• Designed to repair damaged, grooved or worn shafts
• Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
• Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
• Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
• Easy to install with removable flange and installation tool
• Installation tool reduces sleeve distortion and allows for installation without removal from the shaft

The original drive shafts on specific vehicles have permanently staked universal joints that make servicing difficult. This Dorman OE FIX rear drive shaft makes the U-joints serviceable for simpler maintenance.

Product Features:

• Ready to install – this drive shaft is shipped pre-assembled and factory balanced to ensure immediate smooth operation
• All-new manufacturing – made 100% new, not remanufactured, so there’s no core charge or return hassle
• Quality engineering – designed in the United States and backed by decades of automotive aftermarket experience
• Simplifies repair – this replacement makes the U-joints serviceable for simpler maintenance

Product Features:

• CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
• PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
• SMOOTH ROTATION: Crowned raceways and rollers for even load distribution
• OE-STYLE DESIGN: Engineered to meet OE specifications
• COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
• RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on

Product Features:

• BUILT TO LAST: Advanced heat treatment process for strength
• PREMIUM MATERIALS: Precision manufactured using premium-grade steel for lasting performance and extended bearing life
• RELIABLE PERFORMANCE: Element size and quantity are engineered to meet or exceed the load rating of OE bearings
• COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
• RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on

This spindle nut is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:

• Direct replacement – this spindle nut matches the fit and function of the factory part on specified years, makes and models
• Ideal solution – this nut is a reliable replacement for an original part that is missing or has failed due to fatigue
• Durable construction – this part is made from quality materials to ensure reliable performance and long service life
• Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

This spindle nut is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:

• Direct replacement – this spindle nut matches the fit and function of the factory part on specified years, makes and models
• Ideal solution – this nut is a reliable replacement for an original part that is missing or has failed due to fatigue
• Durable construction – this part is made from quality materials to ensure reliable performance and long service life
• Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

Value-priced bearing meets all cataloged application requirements.

Product Features:

• Brand may vary by location

Product Features:

• CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
• PREMIUM MATERIALS: Precision manufactured using high-quality materials for durability and performance
• OE-STYLE DESIGN: Engineered to meet OE specifications
• COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
• RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on

All CARQUEST axles have a new zinc dichromate plated nut or attaching hardware. CV joint grease has a high moly content. The boot bands are made from stainless steel, and the boots are manufactured to resist wear and damage due to extreme high and low temperatures.High moly CV joint grease with stainless-steel boot bands

Carquest CV Axle’s are made from the finest materials using premium steel, boot, and grease. Carquest CV Axles are designed to exceed the original equipment specifications for a trouble free ride.

Product Features:

• High moly CV joint grease with stainless-steel boot bands

Value-priced bearing meets all cataloged application requirements.

Product Features:

• Brand may vary by location

Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.

Product Features:

• PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
• SMOOTH ROTATION – Crowned raceways for even load distribution
• OE-STYLE DESIGN – Engineered to meet OE specifications
• COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
• RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on

Product Features:

• PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
• SMOOTH ROTATION: Crowned raceways for even load distribution
• OE-STYLE DESIGN: Engineered to meet OE specifications
• COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
• RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on

Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.

Product Features:

• PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
• SMOOTH ROTATION – Crowned raceways and rollers for even load distribution
• OE-STYLE DESIGN – Engineered to meet OE specifications
• COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
• RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on

Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.

Product Features:

• PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
• SMOOTH ROTATION – Crowned raceways and rollers for even load distribution
• OE-STYLE DESIGN – Engineered to meet OE specifications
• COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
• RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on

National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:

• PREMIUM MATERIALS — Precision manufactured using premium-grade steel for outstanding durability and performance
• SMOOTH ROTATION — Crowned raceways and rollers for even load distribution
• OE-STYLE DESIGN — Engineered to meet OE specifications
• COMPREHENSIVE COVERAGE — Industry-leading coverage for domestic and import applications
• RIGOROUS TESTING — Comprehensive testing throughout design and development processes by National engineers for quality you can count on