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Details
| Specification | Value |
|---|---|
| Brand | BOSCH |
| Piston Diameter [mm] | 15.87 mm |
OE numbers (6)
Search by this OE number to find compatible parts
- AUDI / SEAT / SKODA / VW—1J1 721 388 A
- AUDI / SEAT / VW—1J1 721 388 C
- VW—1J1 721 388 D
- SKODA / VW—1J1 721 388 E
- VW—1J1 721 388 F
- VW—1J1 721 388 G
Where this part fits
Original-fit position for OE 1J1721388G. The red ring marks where this part installs on the vehicle.
About this product
When master cylinder clutch performance matters, the BOSCH 0 986 486 031 delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Piston Diameter [mm]: EPDM, 87 mm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Compatible with AUDI, SEAT, SKODA, VW vehicles; use the vehicle selector above to confirm exact fitment for your make, model, and engine variant. Fitment data is sourced from TecDoc, the authoritative European parts catalogue. This part supersedes original equipment references: 03 3222 6903 3, 1202456, 122100B, 1340803616 and 31 more. Matching these numbers confirms a like-for-like replacement with no loss of function. BOSCH is a recognised supplier of automotive replacement components to independent workshops and dealer networks across Europe. All parts are sourced from authorised distribution channels and carry full manufacturer traceability — you receive exactly the same component supplied to professional garages and dealer workshops. If fitment or specifications do not match your vehicle, our technical team can help identify the correct alternative — use the vehicle selector or contact us with your VIN for a guaranteed-fit recommendation. Replacing worn components on schedule preserves your vehicle's safety, reliability, and resale value — and aftermarket parts from established brands deliver OEM-equivalent performance at a fraction of the dealer price. Every part is dispatched with tracked delivery and a 14-day money-back guarantee with hassle-free returns.
About BOSCH
Robert Bosch GmbH, founded in 1886 in Stuttgart, Germany, is one of the world's largest automotive parts suppliers. Bosch specialises in braking systems, fuel injection, spark plugs, alternators, and electronic engine management. As an OE supplier to virtually every major car manufacturer, Bosch parts meet or exceed original equipment specifications. With over 130 years of engineering innovation, choosing Bosch means choosing proven reliability backed by extensive research and development.
Suitable cars
Equivalent products (29)
Show all 29 OE numbers
Master Cylinder Clutch BOSCH 0 986 486 031 — compatible car models
| Car models | AUDI: A3 (8L1), TT (8N3), TT Roadster (8N9); SEAT: LEON (1M1), TOLEDO II (1M2); SKODA: OCTAVIA I (1U2), OCTAVIA I Combi (1U5), OCTAVIA I Estate Van (1U5); VW: BORA (9M2), BORA I (1J2), BORA Variant (1J6), GOLF IV (1J1), GOLF IV (9B3), GOLF IV Van (1J1), GOLF IV Variant (1J5), GOLF VAN IV Variant (1J5), NEW BEETLE (9C1, 1C1), NEW BEETLE Convertible (1Y7) |
|---|---|
| Engines | 1.6; 1.8 T; 1.4 16V; 1.4; 1.9 D; 1.8 Turbo; 1.6 Total Flex; 1.9 SDI |
| Year of manufacture | 1996-2014 |
| Manufacturer article number (MPN) | 0 986 486 031 |
| OE part numbers | 1J1 721 388 A, 1J1 721 388 C, 1J1 721 388 D, 1J1 721 388 E, 1J1 721 388 F, 1J1 721 388 G |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
BOSCH 0986486031 . Piston Diameter [mm]: 15,87 mm
- 1x Master Cylinder Clutch
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Tracked standard shipping.
- Standard delivery: 5–9 business days
- Order before 5pm — ships the next working day
- Free returns within 14 days
- All parts backed by manufacturer warranty
Warranty: 12-month manufacturer warranty on all parts. 14-day money-back guarantee if the part doesn't fit your vehicle.
Frequently Asked Questions
Is this Master Cylinder Clutch compatible with my car?
This Master Cylinder Clutch fits AUDI, SEAT, SKODA, VW vehicles. Use the vehicle selector at the top of the page to check exact compatibility — enter your car's make, model, and engine for a confirmed fitment match. All fitment data is verified through TecDoc.
What specifications does this BOSCH Master Cylinder Clutch have?
This BOSCH Master Cylinder Clutch has the following specifications: Piston Diameter [mm]: 15,87 mm. Check the full specifications table above for complete details.
What OE part numbers does this Master Cylinder Clutch replace?
This Master Cylinder Clutch replaces OE part numbers: 1J1 721 388 A, 1J1 721 388 C, 1J1 721 388 D, 1J1 721 388 E, 1J1 721 388 F, 1J1 721 388 G. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Master Cylinder Clutch cost?
This BOSCH Master Cylinder Clutch is available for £50.99. Master Cylinder Clutch prices vary depending on brand, specifications, and vehicle compatibility. BOSCH parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Master Cylinder Clutch?
Regular inspection of your Master Cylinder Clutch is recommended as part of routine vehicle maintenance. Watch for changes in performance, unusual noises, or visual signs of wear. Consult your vehicle's owner manual for manufacturer-recommended replacement intervals specific to your make and model.
What tools do I need to replace a Master Cylinder Clutch?
Tools required vary by vehicle make and model. Generally, a basic socket set, screwdrivers, and vehicle-specific tools may be needed. We recommend consulting a workshop manual for your specific vehicle, or having the Master Cylinder Clutch fitted by a professional mechanic.
Can I use this part as a replacement for OE 1J1 721 388 A?
Yes, this BOSCH Master Cylinder Clutch is a direct replacement for OE part number 1J1 721 388 A. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
