1. Product Identification & OE Specification
| Parameter | Details |
|---|---|
| Product Name | Thermostat to Engine Coolant Hose / Water Hose |
| OE Number | LR039260 |
| Product Type | Engine cooling system hose – thermostat outlet to engine block |
| Material | High-grade EPDM synthetic rubber with textile reinforcement |
| Working temperature range | -40°C to +120°C |
| Burst pressure | ≥ 2.5 MPa |
| OE fitment | 100% dimensional match – direct replacement, no modification |
LR039260 is an official Land Rover OE part number for a thermostat-to-engine coolant hose that plays a critical role in the vehicle's cooling system. According to Land Rover's Electronic Parts Catalogue (EPC), this hose connects the thermostat housing to the engine block, allowing cooled coolant to circulate back into the engine after passing through the radiator. The hose is made of a durable EPDM rubber compound specifically engineered to withstand the high temperatures and pressures of modern turbocharged diesel cooling systems.
2. Compatible Land Rover Models
| Model | Chassis Code | Production Years | Engine |
|---|---|---|---|
| Range Rover | L405 | 2013–present | 3.0L V6 Diesel 24V DOHC TC |
| Range Rover Sport | L494 | 2014–present | 3.0L V6 Diesel 24V DOHC TC |
| Range Rover Velar | L560 | 2017–present | 3.0L Diesel |
The LR039260 coolant hose is specifically designed for Land Rover's 3.0L V6 turbo diesel engine (24V DOHC TC) fitted to the L405 Range Rover and L494 Range Rover Sport models. The 3.0L SDV6 diesel engine has a complex cooling circuit with high thermal load, making cooling system component quality critically important.
Where the LR039260 hose is located in the cooling system:
Thermostat housing → engine block (coolant return path)
Works in conjunction with LR034641 (radiator top hose), LR034648 (degas line), and LR039253 (thermostat to top radiator hose)
3. Technical Details – Why Material Matters
The cooling system in the 3.0L SDV6 diesel engine operates under extreme conditions. The engine bay of a Range Rover Sport regularly sees temperatures exceeding 90°C during normal operation, with localized heat near the turbocharger and exhaust system significantly higher. A coolant hose that cannot handle these conditions will fail prematurely-often manifesting as:
Micro-cracking on the outer surface – accelerated by ozone exposure and thermal cycling
Swelling or bulging at connection points – indicates reinforcement layer failure
Coolant seepage without visible drips – internal delamination causing micro-leaks
Hardening and loss of flexibility – makes installation difficult and increases risk of improper sealing
Our LR039260 replacement hose is manufactured to OE-grade specifications using:
EPDM rubber compound – specifically formulated for glycol-based coolant resistance and long-term thermal stability up to +120°C continuous
High-tensile synthetic fiber reinforcement – prevents expansion under pressure and maintains hose shape under vacuum conditions
Precision-moulded bends – matches OE geometry exactly, ensuring proper routing without kinking or rubbing against adjacent components
4. Why LR039260 Is a Fast-Moving SKU for B2B Distributors
From a commercial inventory perspective, LR039260 represents an excellent stocking opportunity for several reasons:
4.1 High Failure Rate Component
Coolant hoses on the 3.0L SDV6 engine are known to degrade after 80,000–100,000 km or 5–6 years of service. High engine bay temperatures from the turbocharged configuration accelerate rubber aging. Replacement demand is consistent and recurring-this is not a one-time sale part.
4.2 Broad Vehicle Coverage
One SKU covers multiple high-volume Land Rover models:
Range Rover L405 (2013–present) – flagship luxury SUV, high global sales volume
Range Rover Sport L494 (2014–present) – one of Land Rover's most popular models worldwide
Range Rover Velar L560 (2017–present)
These models are widely distributed across Europe, North America, the Middle East, Australia, and China. A single warehouse SKU serves a diverse customer base.
4.3 Often Sold in Cooling System Kits
Many repair shops and distributors purchase cooling system hoses in combination:
LR039260 (thermostat to engine)
LR034641 (radiator top hose)
LR034648 (degas line)
LR039253 (thermostat to top radiator)
Stocking these together increases average order value and positions you as a one-stop supplier for Range Rover cooling system needs.
4.4 No Complicated Supersession
Unlike many Land Rover parts that have undergone multiple supersessions, LR039260 remains a current active OE number for the 3.0L diesel cooling system. This simplifies inventory management-what you stock today will still be relevant for years to come.
5. Quality Control & Manufacturing Standards
As a B2B supplier with over 20 years of experience in automotive fluid transfer systems, Guangzhou Sanjin Auto Parts Co., Ltd. implements strict quality control measures for every LR039260 hose produced:
| QC Stage | Inspection Points |
|---|---|
| Raw material incoming | Rubber compound certification, reinforcement fiber tensile strength |
| In-process (moulding) | Dimensional accuracy, wall thickness uniformity, bubble detection |
| Post-moulding | Visual inspection for surface defects, flash removal, bend angle verification |
| Final assembly | Pressure testing, inner diameter/outer diameter measurement, OE fitment check on jig fixture |
| Batch sampling | Burst pressure test (minimum 2.5 MPa), heat aging test, coolant immersion test |
Each production batch is traceable with a test report available upon request. We maintain a field defect rate below 0.5% for our cooling hose products.
6. B2B Supply Advantages – Partner with Sanjin
| Advantage | Description |
|---|---|
| Factory-direct pricing | No middlemen. Wholesale cost structure for volume buyers. |
| Low MOQ | Sample order (10–20 pieces) available for quality testing before bulk commitment. |
| Private label support | Custom packaging, barcode labelling, and branding upon request (minimum 500 pieces). |
| Global shipping | Dedicated sea/air logistics partners. Door-to-door delivery to North America, Europe, Middle East, Australia, Southeast Asia. |
| 2-year warranty | Full coverage for manufacturing defects – peace of mind for your customers. |
| Technical support | English-speaking sales engineers for VIN verification, fitment questions, installation guidance – response within 24 hours. |
| Dual OE number labelling | We can print LR039260 and any supersession references on the box, reducing your customer's confusion and streamlining warehouse operations. |
7. Logistics & Lead Times
Stock item status: LR039260 is a regularly produced item in our catalogue
Sample order lead time: 3–7 days (from stock)
Bulk order (500–2,000 pieces): 15–25 days after deposit confirmation
Shipping options:
– Express (DHL/FedEx/UPS) – 3–5 days for sample orders under 100 kg
– Air freight – 5–10 days for urgent restocking
– Sea freight (LCL/FCL) – 20–35 days, most cost-effective for container orders
Port of departure: Guangzhou / Shenzhen, China
8. How to Place a B2B Order
| Step | Action |
|---|---|
| 1 | Send OE number LR039260 + target quantity to our sales team |
| 2 | Request sample for physical fitment testing (sample cost deducted from first bulk order) |
| 3 | Receive proforma invoice with confirmed quantity, packaging, and shipping terms |
| 4 | Production and quality control (batch inspection and random sampling) |
| 5 | Shipping and documentation – commercial invoice, packing list, bill of lading, Certificate of Origin (upon request) |
FAQ (B2B Focus)
Q1: What is the exact function of LR039260 in the cooling system?
LR039260 is the coolant hose that connects the thermostat housing to the engine block. After coolant passes through the radiator and is cooled, the thermostat opens and allows the cooled coolant to flow back into the engine block to regulate operating temperature. This hose is part of the engine's primary cooling circuit and is critical to preventing overheating.
Q2: Which Land Rover models use LR039260?
The LR039260 coolant hose is used on Range Rover L405 (2013–present) and Range Rover Sport L494 (2014–present) equipped with the 3.0L V6 turbo diesel engine (24V DOHC TC). It also fits the Range Rover Velar (2017–present) with the same 3.0L diesel engine.
Q3: Is LR039260 a direct replacement for the original Land Rover part?
Yes. Our LR039260 hose is manufactured to 100% OE dimensional specifications. It uses the same EPDM rubber compound, same reinforcement structure, and same moulded bend geometry as the original Land Rover part. No modification is required during installation.
Q4: Do you offer cooling system hose kits for Range Rover?
Yes. We supply complete cooling system hose sets for L405 Range Rover and L494 Range Rover Sport, including LR039260, LR034641 (radiator top hose), LR034648 (degas line), LR039253 (thermostat to radiator), and other related hoses. Request our full kit catalogue for wholesale pricing.
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