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CP247
£59.99Will it fit your car?
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BrandDELPHI
MPNLM30045
OE refs5
SKU0089-LM30045
GTIN / EAN5012759079690

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Details

SpecificationValue
BrandDELPHI
MPNlm30045
CategoryMaster brake cylinder
Brake SystemLucas
Thread Size 1M10x1
Piston Diameter [mm]23.8 mm

OE numbers (5)

Search by this OE number to find compatible parts

Where this part fits

Original-fit position for OE 8A0611021. The red ring marks where this part installs on the vehicle.

Tandem brake master cylinder F 8C-P-000 001>> — 80 80/90/Avant Quattro B4 (Typ 8CQ) (1992–1996) — Tandem brake master cylinder Reservoir
80 80/90/Avant Quattro B4 (Typ 8CQ) (1992–1996) · Tandem brake master cylinder ReservoirPosition 1

About this product

When master brake cylinder performance matters, the DELPHI LM30045 delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Brake System: Lucas, Thread Size 1: M10x1, Piston Diameter [mm]: 23, Carbon mm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Compatible with AUDI 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: 010167, 03.2123-0491.3, 03-2123-0491-3-01, 05-0247 and 40 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 (43)

Show all 43 OE numbers
AKRON-MALÒ89111
ATE-CN010167
ATE-CN03.2123-0491.3
ATE-CN03-2123-0491-3-01
AUTOMEGA3061100218A0
BENDIX132508B
BENDIX132867B
BOSCHMC1158
BOSCHMC1188
Brake ENGINEERING1875
Brake ENGINEERINGMC1095BE
Brake ENGINEERINGMC1444BE
Brake ENGINEERINGMC1875
BREMBOM 85 010
CAR5276
CIFAM202-247
FERODOFHM684
FIRST LINEFBM4542
FTEH23959.0.1
GIRLING4007119
KAGER39-0145
KAWEB1875
LPR1875£80.99
LPR802711
METELLI05-0247
METZGER AUTOTEILE202-247
MGAMC2276
NK824757
NUOVA TECNODELTA5276
PEX2.23.305
QUINTON HAZELLHF23022
ROADHOUSE1023.22
SAMKOP02711
Schaeffler FAGH23959.0.1
Schaeffler FAGH23975.0.1
TRISCAN8130 29138
TRW32066393
TRW32066419
TRW32066531
TRWPMK119£175.99
UBD82834
VALEO402070
VILLAR621.3536

Master brake cylinder DELPHI LM30045compatible car models

Car modelsAUDI: 100 C4 Avant (4A5), 100 C4 Saloon (4A2), 80 B4 Avant (8C5), 80 B4 Saloon (8C2), A6 C4 (4A2), A6 C4 Avant (4A5), CABRIOLET B3 (8G7), COUPE B3 (89, 8B3)
Engines2.4 D; 2.0; 1.6 E; 1.6; S6 Plus quattro; 1.9 TDI
Year of manufacture1988-2000
Manufacturer article number (MPN)LM30045
OE part numbers4A0 611 019, 4A0 611 019C, 4A0 611 021B, 4A0 611 021C, 8A0 611 021
Compatibility check

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Description and what's included

DELPHI lm30045 Master brake cylinder. Brake System: Lucas. Piston Diameter [mm]: 23,8 mm. Thread Size 1: M10x1

What's included:
  • 1x Master brake cylinder
Shipping, returns, warranty

Free UK delivery on orders over £99.00. Tracked standard shipping.

  • Standard delivery: 4–8 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 AUDI 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: Lucas; Thread Size 1: M10x1; Piston Diameter [mm]: 23,8 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: 4A0 611 019, 4A0 611 019C, 4A0 611 021B, 4A0 611 021C, 8A0 611 021. 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 £59.99. 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 4A0 611 019?

Yes, this DELPHI Master brake cylinder is a direct replacement for OE part number 4A0 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 LM30045 the same as the DELPHI LM20008?

No, while both are Master brake cylinder parts, they are different products. The DELPHI LM30045 has Brake System: Lucas, Thread Size 1: M10x1, Piston Diameter [mm]: 23,8 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.

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