Hydraulic Clutch Master Cylinder for Land Rover XUI3120L

CM246

Applicable Models (Application)
This product corresponds to OEM part number 550732 and is compatible with the following Land Rover models:

Model Series	Specific Model	Applicable Year	Remarks
Land Rover Defender	Defender 90	1987–2016	Includes all 4-cylinder models such as 200Tdi, 300Tdi, Td5, 2.4/2.2 TDCi (Puma)
Land Rover Defender	Defender 110	1987–2016	Includes all 4-cylinder models such as 200Tdi, 300Tdi, Td5, 2.4/2.2 TDCi
Land Rover Defender	Defender 130	1987–2016	All 4-cylinder models
Land Rover Series III	88 / 109	1971–1985	Includes 2.25L gasoline/diesel versions

Both the Land Rover Defender and Series III use original aluminum master cylinders, which are prone to wear and tear over time. This can lead to hydraulic fluid contamination and discoloration, seal failure, a soft and weak pedal, and in severe cases, complete inability to shift gears. The XUI3120L, as a drop-in replacement, restores the original clutch's normal hydraulic performance upon installation.

Land Rover Series IIA Late Series 88/109 (1969–1971, North American Standard Version) Late Series IIA (End of Phase)

Core Functions
Hydraulic Pressure Conversion: Precisely converts pedal mechanical force into hydraulic output, driving the slave cylinder to disengage the clutch, ensuring smooth shifting.
Wear-resistant Cylinder Wall Sealing: Built-in high-quality rubber seals effectively prevent brake fluid leakage and internal bypass, maintaining stable hydraulic pressure.
Integrated Reservoir Design: Includes a reservoir in the box; ready to install, reducing the need for additional parts.
Direct OEM Replacement: Manufactured to STC500100 original dimensions; no modifications to piping or mounting holes required; plug and play.
Compatible with Mainstream Brake Fluids: Fully compatible with DOT 3/DOT 4 brake fluids; no additional requirements for daily topping up.
Wide Temperature Adaptability: Suitable for various usage environments including Land Rover off-road driving and extreme climates.

Purchase Motivation Analysis
5.1 What problems can this product solve for you? Launch Private Label: Supports neutral or customized packaging. Targeting a precise Land Rover audience, suitable for building brand awareness in the European/Australian/Middle Eastern Defender community market.
Wholesale Retail: The STC500100 is a high-demand consumable part in the global Land Rover aftermarket, with short lead times and high turnover rates.
Cost Reduction: Significantly lower price compared to OEM parts, while meeting OEM standards, effectively helping buyers reduce repair costs and increase profit margins.

5.2 What pain points does this product solve for overseas customers?
Original aluminum cylinder block is prone to wear: Land Rover's original master cylinder is made of aluminum. Over time, the inner wall wears down, causing the hydraulic oil to become cloudy (contamination), which in turn damages the slave cylinder. Buyers need a high-quality alternative with a stable supply.
Unstable OEM parts supply: With the discontinuation of Defender production (2016), the supply of original parts has gradually tightened, leading to strong demand from independent repair shops and dealers for stable supplies.
Large global Defender usage: Defender vehicles are still widely used in the UK, Australia, the Middle East, Africa, and South America, primarily manual transmission vehicles. The clutch master cylinder is a frequently repaired part.
Repair shops tend to purchase complete kits at once: Master and slave cylinders usually wear out simultaneously. Wholesalers who can provide matching parts can further enhance customer loyalty.
Intense brand competition and price sensitivity: Brands like TRW and Britpart already compete in the market, and buyers need alternatives with better cost-performance ratios.

Frequently Asked Questions: Can this product replace the STC500100?
Yes, the XUI3120L is a direct replacement for the STC500100, and also cross-references 550732, STC100410, and STC100411. No modifications are required for installation.

Which Land Rover models are compatible?
Compatible with all Land Rover Defender 90/110/130 4-cylinder models (1987–2016) and Series III 88/109 (1971–1985). For V8 models, please check the VIN.

Can it be used with both left-hand drive (LHD) and right-hand drive (RHD) models?
Yes, this product is compatible with both left-wheel drive and right-wheel drive Land Rover models; no distinction is needed.