OVERVIEW
Genuine VW/Audi 4S0-698-451-M is a rear service-brake pad set with a disc-brake pad wear sensor for the matching original Audi R8 steel-brake arrangement. The set supplies the pads at the rear axle; ceramic-composite brake systems use separately assigned pads.
Technical details and what is included
- Factory part number: 4S0-698-451-M / 4S0698451M.
- Verified earlier numbers: 420-698-451-J / 420698451J and 4S0-698-451-A / 4S0698451A.
- Installation position: rear service brakes.
- Set shown: four brake pads and one wear sensor.
- Quantity supplied: one rear axle pad set.
- Brake discs, calipers and separately specified mounting hardware are not included.
Match the original pad number, rear caliper and factory brake equipment before ordering. The set is not specified for ceramic-composite brakes or as a universal parking-brake pad set. Early 2021 applications require the production-date restriction in the fitment table.
Common reasons to replace
- The original rear pads have reached the factory wear limit.
- A diagnosed pad-wear indication requires pad and sensor service.
- Inspection identifies damaged, contaminated or unevenly worn pads.
- Rear brake service requires renewal of the original matching pad set.
Inspect both rear discs, calipers, guide or retaining components and the wear-sensor wiring separately. Replacing pads alone does not correct a damaged disc, binding caliper or separate brake-system fault. Determine the cause of abnormal wear or brake symptoms before fitting replacement components.
Vehicle fitment
These applications require the original non-ceramic rear service-brake configuration. Confirm the brake equipment and production date; model name alone does not establish compatibility.
| Vehicle | Model years | Engine | Configuration | Application restrictions |
|---|---|---|---|---|
| Audi R8 Coupe | 2014–2015 | 4.2L FSI gasoline V8 | Type 42 coupe; quattro; Original factory transmission; rear brake equipment and build date determine fitment | Rear service-brake pad set for the original non-ceramic/steel brake arrangement assigned 4S0698451M or verified earlier 420698451J / 4S0698451A. Ceramic-composite brake systems and their pad sets are excluded. Confirm original caliper, brake equipment and pad number. One rear axle pad set with wear sensor supplied; rotors, calipers and separately specified hardware are separate. |
| Audi R8 Spyder | 2014–2015 | 4.2L FSI gasoline V8 | Type 42 convertible; quattro; Original factory transmission; rear brake equipment and build date determine fitment | Rear service-brake pad set for the original non-ceramic/steel brake arrangement assigned 4S0698451M or verified earlier 420698451J / 4S0698451A. Ceramic-composite brake systems and their pad sets are excluded. Confirm original caliper, brake equipment and pad number. One rear axle pad set with wear sensor supplied; rotors, calipers and separately specified hardware are separate. |
| Audi R8 Coupe | 2014–2015 | 5.2L FSI gasoline V10 | Type 42 coupe; original steel-brake configuration; Original factory transmission; rear brake equipment and build date determine fitment | Rear service-brake pad set for the original non-ceramic/steel brake arrangement assigned 4S0698451M or verified earlier 420698451J / 4S0698451A. Ceramic-composite brake systems and their pad sets are excluded. Confirm original caliper, brake equipment and pad number. One rear axle pad set with wear sensor supplied; rotors, calipers and separately specified hardware are separate. |
| Audi R8 Spyder | 2014–2015 | 5.2L FSI gasoline V10 | Type 42 convertible; quattro; Original factory transmission; rear brake equipment and build date determine fitment | Rear service-brake pad set for the original non-ceramic/steel brake arrangement assigned 4S0698451M or verified earlier 420698451J / 4S0698451A. Ceramic-composite brake systems and their pad sets are excluded. Confirm original caliper, brake equipment and pad number. One rear axle pad set with wear sensor supplied; rotors, calipers and separately specified hardware are separate. |
| Audi R8 Coupe | 2017–2018; 2020 | 5.2L FSI gasoline V10 | Type 4S coupe; base V10 quattro with original steel brakes; Original factory transmission; rear brake equipment and build date determine fitment | Rear service-brake pad set for the original non-ceramic/steel brake arrangement assigned 4S0698451M or verified earlier 420698451J / 4S0698451A. Ceramic-composite brake systems and their pad sets are excluded. Confirm original caliper, brake equipment and pad number. One rear axle pad set with wear sensor supplied; rotors, calipers and separately specified hardware are separate. |
| Audi R8 Spyder | 2017–2018; 2020 | 5.2L FSI gasoline V10 | Type 4S convertible; base V10 quattro with original steel brakes; Original factory transmission; rear brake equipment and build date determine fitment | Rear service-brake pad set for the original non-ceramic/steel brake arrangement assigned 4S0698451M or verified earlier 420698451J / 4S0698451A. Ceramic-composite brake systems and their pad sets are excluded. Confirm original caliper, brake equipment and pad number. One rear axle pad set with wear sensor supplied; rotors, calipers and separately specified hardware are separate. |
| Audi R8 Coupe | 2021 | 5.2L FSI gasoline V10 | Type 4S coupe; RWD; original steel brakes; Original factory transmission; rear brake equipment and build date determine fitment | Rear service-brake pad set for the original non-ceramic/steel brake arrangement assigned 4S0698451M or verified earlier 420698451J / 4S0698451A. Ceramic-composite brake systems and their pad sets are excluded. Production through November 23, 2020 only; later 2021 builds require separate part-number verification. Confirm original caliper, brake equipment and pad number. One rear axle pad set with wear sensor supplied; rotors, calipers and separately specified hardware are separate. |
| Audi R8 Spyder | 2021 | 5.2L FSI gasoline V10 | Type 4S convertible; RWD; original steel brakes; Original factory transmission; rear brake equipment and build date determine fitment | Rear service-brake pad set for the original non-ceramic/steel brake arrangement assigned 4S0698451M or verified earlier 420698451J / 4S0698451A. Ceramic-composite brake systems and their pad sets are excluded. Production through November 23, 2020 only; later 2021 builds require separate part-number verification. Confirm original caliper, brake equipment and pad number. One rear axle pad set with wear sensor supplied; rotors, calipers and separately specified hardware are separate. |
Installation and service guidance
Follow the factory rear brake service procedure for the exact caliper and parking-brake configuration. Use the prescribed piston-retraction and parking-brake service steps where applicable. Inspect the brake discs and mounting components against the factory service limits before assembly.
Install the matching pads and wear sensor in their prescribed positions, restore the original sensor lead route and renew separately specified single-use hardware when required. Use only the specified service products at the designated locations and keep the friction surfaces free of contamination.
Complete the prescribed pedal, fluid-level, parking-brake and system checks after reassembly. Follow the factory bedding and functional verification procedure for the installed brake system. Consult the vehicle repair information for exact tightening values and service steps.