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Details
| Specification | Value |
|---|---|
| Brand | DELPHI |
| MPN | lm42031 |
| Category | Master brake cylinder |
| Brake System | Teves |
| Thread Size 1 | M10x1 |
| Piston Diameter [mm] | 20.6 mm |
OE numbers (4)
Search by this OE number to find compatible parts
- SEAT / VAG / VW—191 611 019
- SEAT / VW—192 611 019
- SEAT—3981135
- SEAT / VAG—SE021715003A
Where this part fits
Original-fit position for OE 191611019. The red ring marks where this part installs on the vehicle.
About this product
The DELPHI Master brake cylinder (LM42031) is a professional-grade replacement component engineered for long service life and reliable operation across all conditions your vehicle encounters. The part is built to the following specification: Brake System: Teves, Thread Size 1: M10x1, Piston Diameter [mm]: 20, Plastic mm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit CITROËN, PEUGEOT, RENAULT, SEAT and 1 other makes models. All compatibility data is cross-checked against the TecDoc database — select your vehicle to confirm the part matches your specific engine and year. This part supersedes original equipment references: 010106, 03.2120-1886.3, 03.2120-1893.3, 03.2120-1895.3 and 92 more. Matching these numbers confirms a like-for-like replacement with no loss of function. DELPHI is a recognised supplier of automotive braking 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 DELPHI
Delphi Technologies, with roots dating back to 1994 as part of General Motors, is a globally recognised supplier of fuel injection, ignition, and engine management systems. Delphi specialises in diesel injectors, fuel pumps, ignition coils, lambda sensors, and engine management components. As an OE supplier to major manufacturers worldwide, Delphi products are engineered to original factory specifications. With deep expertise in both petrol and diesel fuel systems, Delphi is the professional's choice for precision engine and fuel system components.
Suitable cars
Equivalent products (99)
Show all 99 OE numbers
Master brake cylinder DELPHI LM42031 — compatible car models
| Car models | CITROËN: AX (ZA-), ZX Hatchback Van (N2), ZX (N2); PEUGEOT: 106 I (1A, 1C), 106 Van I Hatchback Van (1S), 205 Hatchback Van, 205 I (741A/C), 205 I Convertible (741B, 20D), 205 II (20A/C), 309 Hatchback Van (10S, 3S), 309 I (10C, 10A), 309 II (3C, 3A); RENAULT: 19 I (B/C53), 19 I Cabriolet (D53), 19 I Chamade (L53), 19 I Hatchback Van (S53), 19 II (B/C53), 19 II Cabriolet (D53, 853), 19 II Chamade (L53), 19 II Hatchback Van (S53), CLIO I (B/C57, 5/357), CLIO I Hatchback Van (S57) (+8 more) |
|---|---|
| Engines | 14 GT; 1.4; 1.8; 1.3; 1.0; 1.1; 1.3 XL; 1.6; 1.7; 1.2; 1.7 (D53C); 2.0 i (J116); 1.9 D; 1.4 e (BA0E, BA0V); 1.6 e (EA0F) (+3 more) |
| Year of manufacture | 1983-2008 |
| Manufacturer article number (MPN) | LM42031 |
| OE part numbers | 191 611 019, 192 611 019, 3981135, SE021715003A |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
DELPHI lm42031 Master brake cylinder. Brake System: Teves. Piston Diameter [mm]: 20,6 mm. Thread Size 1: M10x1
- 1x Master brake cylinder
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 brake cylinder compatible with my car?
This Master brake cylinder fits CITROËN, PEUGEOT, RENAULT, SEAT, 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 DELPHI Master brake cylinder have?
This DELPHI Master brake cylinder has the following specifications: Brake System: Teves; Thread Size 1: M10x1; Piston Diameter [mm]: 20,6 mm. Check the full specifications table above for complete details.
What OE part numbers does this Master brake cylinder replace?
This Master brake cylinder replaces OE part numbers: 191 611 019, 192 611 019, 3981135, SE021715003A. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Master brake cylinder cost?
This DELPHI Master brake cylinder is available for £29.99. Master brake cylinder prices vary depending on brand, specifications, and vehicle compatibility. DELPHI 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 brake cylinder?
Regular inspection of your Master brake cylinder 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 brake cylinder?
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 brake cylinder fitted by a professional mechanic.
Can I use this part as a replacement for OE 191 611 019?
Yes, this DELPHI Master brake cylinder is a direct replacement for OE part number 191 611 019. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Is the DELPHI LM42031 the same as the DELPHI LM20008?
No, while both are Master brake cylinder parts, they are different products. The DELPHI LM42031 has Brake System: Teves, Thread Size 1: M10x1, Piston Diameter [mm]: 20,6 mm. The DELPHI LM20008 may differ in dimensions, fitting position, or material composition. Always verify compatibility with your specific vehicle using our vehicle selector, or contact our customer service team for assistance.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
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