DELPHI LM21091 Main Brake Cylinder

Compatible with AUDI A3 (8L1) , SKODA OCTAVIA I (1U2) , VW GOLF IV (1J1) Show more info
Ensures proper hydraulic pressure for your braking system. A direct fit for reliable performance.
38.99 EUR
inc. VAT 21%
In stock 5
Delivery 1 day (15.05.2026)
PN LM21091
Make DELPHI
EAN 5012759083567

The DELPHI LM21091 Main Brake Cylinder is a critical component for your vehicle's hydraulic braking system. It is responsible for converting the mechanical force from the brake pedal into hydraulic pressure, which is then transmitted to the brake calipers or wheel cylinders. This cylinder is designed to meet or exceed original equipment specifications, ensuring a precise fit and reliable operation. By maintaining consistent hydraulic pressure, it contributes to effective and responsive braking, enhancing overall vehicle safety. Regular inspection and maintenance of the main brake cylinder are essential for optimal braking performance. If you notice any leaks, a spongy brake pedal, or reduced braking effectiveness, replacing the main brake cylinder with a quality part like the DELPHI LM21091 is recommended.

  • High-quality main brake cylinder from DELPHI
  • Ensures proper hydraulic pressure for braking
  • Designed for direct fit and reliable performance
  • Contributes to safe and responsive braking
  • Replaces original equipment part number LM21091
  • Essential for the hydraulic braking system
Piston diameter [mm]
23,8
Brake system
Bendix
Thread size 1
M12x1
  • AUDI
    • A3 (8L1)
      • 1.6 (74kW/101PS)
      • 1.8 (92kW/125PS)
      • 1.8 T (110kW/150PS)
      • 1.9 TDI (66kW/90PS)
      • 1.9 TDI (81kW/110PS)
      • 1.8 T quattro (132kW/180PS)
      • 1.8 T quattro (110kW/150PS)
      • 1.8 T (132kW/180PS)
      • 1.9 TDI (96kW/130PS)
      • 1.6 (75kW/102PS)
      • 1.9 TDI quattro (96kW/130PS)
      • 1.9 TDI (74kW/100PS)
    • TT (8N3)
      • 1.8 T (132kW/180PS)
      • 1.8 T quattro (132kW/180PS)
      • 1.8 T quattro (165kW/224PS)
    • TT Roadster (8N9)
      • 1.8 T (132kW/180PS)
      • 1.8 T quattro (132kW/180PS)
      • 1.8 T quattro (165kW/224PS)
      • 1.8 T (110kW/150PS)
  • SKODA
    • OCTAVIA I (1U2)
      • 1.6 (55kW/75PS)
      • 1.8 (92kW/125PS)
      • 1.9 TDI (66kW/90PS)
      • 1.6 (74kW/101PS)
      • 1.9 SDI (50kW/68PS)
      • 1.9 TDI (81kW/110PS)
      • 1.8 T (110kW/150PS)
      • 2.0 (85kW/116PS)
      • 1.4 (44kW/60PS)
      • 1.4 16V (55kW/75PS)
      • 1.6 (75kW/102PS)
      • 1.9 TDI (96kW/130PS)
      • 1.9 TDI (74kW/100PS)
    • OCTAVIA I Combi (1U5)
      • 1.6 (74kW/101PS)
      • 1.8 20V (92kW/125PS)
      • 1.9 SDI (50kW/68PS)
      • 1.9 TDI (66kW/90PS)
      • 1.9 TDI (81kW/110PS)
      • 1.8 T (110kW/150PS)
      • 1.6 (55kW/75PS)
      • 1.9 TDI 4x4 (66kW/90PS)
      • 2.0 (85kW/116PS)
      • 1.9 TDI 4x4 (74kW/100PS)
      • 1.4 16V (55kW/75PS)
      • 1.6 (75kW/102PS)
      • 1.8 T 4x4 (110kW/150PS)
      • 2.0 4x4 (85kW/116PS)
      • 1.9 TDI (96kW/130PS)
      • 1.9 TDI (74kW/100PS)
    • OCTAVIA I Furgons/Universālis (1U5)
      • 1.9 TDI (66kW/90PS)
      • 1.9 D (50kW/68PS)
  • VW
    • GOLF IV (1J1)
      • 1.9 TDI (66kW/90PS)
      • 1.6 (74kW/100PS)
      • 1.9 TDI (81kW/110PS)
      • 1.9 SDI (50kW/68PS)
      • 1.4 16V (55kW/75PS)
      • 1.8 (92kW/125PS)
      • 1.8 T (110kW/150PS)
      • 2.3 V5 (110kW/150PS)
      • 1.9 TDI 4motion (66kW/90PS)
      • 1.8 4motion (92kW/125PS)
      • 2.8 VR6 4motion (150kW/204PS)
      • 2.0 (85kW/115PS)
      • 2.3 V5 4motion (110kW/150PS)
      • 1.9 TDI (85kW/115PS)
      • 1.6 16V (77kW/105PS)
      • 1.9 TDI 4motion (85kW/115PS)
      • 1.9 TDI (74kW/101PS)
      • 1.9 TDI 4motion (74kW/101PS)
      • 1.9 TDI (110kW/150PS)
      • 1.9 TDI 4motion (110kW/150PS)
      • 1.6 (75kW/102PS)
      • 2.3 V5 (125kW/170PS)
      • 2.3 V5 4motion (125kW/170PS)
      • 2.0 4motion (85kW/115PS)
      • 1.9 TDI (96kW/130PS)
      • 1.9 TDI 4motion (96kW/130PS)
      • 1.8 T GTI (132kW/180PS)
      • 1.6 FSI (81kW/110PS)
      • 3.2 R32 4motion (177kW/241PS)
      • 2.0 BiFuel (85kW/116PS)
    • NEW BEETLE (9C1, 1C1)
      • 2.0 (85kW/115PS)
      • 1.9 TDI (66kW/90PS)
      • 1.6 (74kW/100PS)
      • 1.8 T (110kW/150PS)
      • 3.2 RSI 4motion (1C9) (165kW/224PS)
      • 1.6 (75kW/102PS)
      • 2.3 V5 (125kW/170PS)
      • 1.9 TDI (74kW/101PS)
      • 1.4 (55kW/75PS)
      • 1.8 T (132kW/180PS)
    • BORA I (1J2)
      • 1.6 (74kW/101PS)
      • 2.0 (85kW/115PS)
      • 2.3 V5 (110kW/150PS)
      • 1.9 TDI (66kW/90PS)
      • 1.9 TDI (81kW/110PS)
      • 1.8 (92kW/125PS)
      • 1.4 16V (55kW/75PS)
      • 1.9 SDI (50kW/68PS)
      • 2.8 V6 4motion (150kW/204PS)
      • 1.8 4motion (92kW/125PS)
      • 2.3 V5 4motion (110kW/150PS)
      • 1.9 TDI 4motion (66kW/90PS)
      • 1.9 TDI (85kW/115PS)
      • 1.9 TDI 4motion (85kW/115PS)
      • 1.6 16V (77kW/105PS)
      • 1.9 TDI (74kW/101PS)
      • 1.9 TDI 4motion (74kW/101PS)
      • 1.9 TDI (110kW/150PS)
      • 1.9 TDI 4motion (110kW/150PS)
      • 1.6 (75kW/102PS)
      • 2.3 V5 (125kW/170PS)
      • 2.3 V5 4motion (125kW/170PS)
      • 1.8 T (110kW/150PS)
      • 2.0 4motion (85kW/115PS)
      • 1.9 TDI (96kW/130PS)
      • 1.9 TDI 4motion (96kW/130PS)
      • 1.6 FSI (81kW/110PS)
      • 1.8 T (132kW/180PS)
    • GOLF IV Cabriolet (1E7)
      • 2.0 (85kW/115PS)
    • GOLF IV Variant (1J5)
      • 1.4 16V (55kW/75PS)
      • 1.6 (74kW/101PS)
      • 2.0 (85kW/115PS)
      • 1.9 SDI (50kW/68PS)
      • 1.9 TDI (66kW/90PS)
      • 1.9 TDI (81kW/110PS)
      • 1.9 TDI (85kW/115PS)
      • 1.9 TDI 4motion (66kW/90PS)
      • 2.3 V5 (110kW/150PS)
      • 2.3 V5 4motion (110kW/150PS)
      • 1.8 4motion (92kW/125PS)
      • 2.8 V6 4motion (150kW/204PS)
      • 1.6 16V (77kW/105PS)
      • 1.9 TDI 4motion (85kW/115PS)
      • 1.9 TDI (74kW/101PS)
      • 1.9 TDI 4motion (74kW/101PS)
      • 1.6 (75kW/102PS)
      • 2.0 4motion (85kW/115PS)
      • 1.9 TDI (96kW/130PS)
      • 1.9 TDI 4motion (96kW/130PS)
      • 2.0 Bi-Fuel (85kW/116PS)
      • 1.6 FSI (81kW/110PS)
      • 1.8 T (110kW/150PS)
      • 2.3 V5 (125kW/170PS)
      • 2.3 V5 4motion (125kW/170PS)
      • 1.9 TDI (110kW/150PS)
      • 1.9 TDI 4motion (110kW/150PS)
    • BORA Variant (1J6)
      • 2.0 (85kW/115PS)
      • 2.3 V5 (110kW/150PS)
      • 1.9 TDI (85kW/115PS)
      • 1.6 (74kW/100PS)
      • 1.9 TDI (81kW/110PS)
      • 2.3 V5 4motion (110kW/150PS)
      • 1.9 TDI 4motion (85kW/115PS)
      • 1.9 TDI (66kW/90PS)
      • 1.8 4motion (92kW/125PS)
      • 2.8 V6 4motion (150kW/204PS)
      • 1.6 16V (77kW/105PS)
      • 1.9 TDI (74kW/101PS)
      • 1.9 TDI 4motion (74kW/101PS)
      • 1.6 (75kW/102PS)
      • 2.3 V5 (125kW/170PS)
      • 2.3 V5 4motion (125kW/170PS)
      • 1.8 T (110kW/150PS)
      • 2.0 4motion (85kW/115PS)
      • 1.9 TDI (96kW/130PS)
      • 1.9 TDI 4motion (96kW/130PS)
      • 1.9 TDI (110kW/150PS)
      • 1.9 TDI 4motion (110kW/150PS)
      • 1.6 FSI (81kW/110PS)
      • 1.8 T (132kW/180PS)
      • 1.4 16V (55kW/75PS)
    • NEW BEETLE Kabriolets (1Y7)
      • 1.6 (75kW/102PS)
      • 2.0 (85kW/115PS)
      • 1.9 TDI (74kW/100PS)
      • 1.4 (55kW/75PS)
      • 1.8 T (110kW/150PS)
    • GOLF IV Van (1J1)
      • 1.9 TDI (66kW/90PS)
      • 1.9 TDI (96kW/130PS)
      • 1.9 TDI 4motion (85kW/116PS)
    • GOLF VAN IV Variant (1J5)
      • 1.9 SDI (50kW/68PS)
      • 1.4 (55kW/75PS)
      • 1.9 TDI (66kW/90PS)
      • 1.9 TDI (74kW/101PS)
      • 1.6 (77kW/105PS)
      • 1.9 TDI (81kW/110PS)
      • 1.9 TDI (85kW/116PS)
      • 1.9 TDI (96kW/131PS)
  • SEAT
    • TOLEDO II (1M2)
      • 1.6 (74kW/100PS)
      • 1.8 20V (92kW/125PS)
      • 2.3 V5 (110kW/150PS)
      • 1.9 TDI (66kW/90PS)
      • 1.9 TDI (81kW/110PS)
      • 1.4 16V (55kW/75PS)
      • 1.6 16V (77kW/105PS)
      • 2.3 V5 20V (125kW/170PS)
      • 1.9 TDI (110kW/150PS)
      • 1.9 TDI (96kW/130PS)
      • 1.8 20VT (132kW/180PS)
    • LEON (1M1)
      • 1.6 (74kW/100PS)
      • 1.8 20V (92kW/125PS)
      • 1.9 TDI (66kW/90PS)
      • 1.9 TDI (81kW/110PS)
      • 1.4 16V (55kW/75PS)
      • 1.8 20V T (132kW/180PS)
      • 1.9 SDI (50kW/68PS)
      • 1.8 20V T 4 (132kW/180PS)
      • 1.6 16 V (77kW/105PS)
      • 2.8 Cupra 4 (150kW/204PS)
      • 1.9 TDI (110kW/150PS)
      • 1.8 T Cupra R (154kW/209PS)
      • 1.8 T Cupra R (165kW/225PS)
      • 1.9 TDI Syncro (110kW/150PS)
      • 1.9 TDI (96kW/130PS)
      • 1.9 TDI (74kW/100PS)
      • 2.8 (150kW/204PS)
  • OPEL
    • SPEEDSTER (E01)
      • 2.2 (R97) (108kW/147PS)
      • 2.0 Turbo (R97) (147kW/200PS)
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