21271982 Coolant Level Sensor for Volvo EC210B, EC210D, EC220D
Part number 21271982 is a heavy-duty coolant level sensor (also referred to as a water level sensor) used extensively across Volvo commercial vehicles, buses, and heavy construction equipment.
Compatible Applications
· Volvo Trucks: FH, FM, FMX, and NH Series (including FH12, FM12, FH16, and newer generation Euro 4/5/6 variants).
· Volvo Construction Equipment: Crawler excavators (such as EC210B, EC210D, EC220D, EC240D) and wheel loaders (like the L120H).
· Volvo Buses: Models 7900, 8900, 9500, as well as B5, B6, B7, B8, and B11 chassis units.
· Renault Trucks: Shares compatibility with Renault heavy trucks under part number 7421271982.
Thank you for choosing SPARKLING MACHINERY.
The SPARKLING MACHINERY NEW 21271982 Coolant Level Sensor Photo:



Why Choose the SPARKLING 21271982 Coolant Level Sensor?
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- Instant Alert System: Prevents engine seizure by warning the operator the moment a leak or evaporation occurs.
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- Hermetically Sealed Electronics: The sensor housing is built to resist vibration and moisture ingress, a common cause of "false alarms" in inferior aftermarket parts.
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- Plug-and-Play Installation: Features the standard Volvo automotive-grade connector for a secure, moisture-proof electrical link.
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- High Chemical Resistance: The probe is resistant to scaling and chemical degradation from long-life coolants.
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Compatible Volvo Excavator Models
This sensor is a standard fitment for the following Volvo platforms:
| Machine Model | Generation | Engine Series |
| EC210B / EC210B Prime | B-Series | Volvo D6E |
| EC210D | D-Series | Volvo D5 |
| EC220D / EC220DL | D-Series | Volvo D6H |
| EC240B / EC290B | B-Series | (Check Serials) |
Q&A Section
Q1: My dashboard shows a "Low Coolant" warning but the tank is full. Is the 21271982 at fault?
A: Yes, this is a common symptom of a failed sensor. Over time, the internal float can become stuck due to sediment, or the electrical resistance can fail, causing the ECU to think the tank is empty.
Q2: Can I bypass this sensor to keep the machine working?
A: While theoretically possible by jumping the wires, it is highly discouraged. Excavators operate under high loads; if a hose bursts while the sensor is bypassed, you will likely destroy the engine before you notice the temperature gauge rising.
Q3: Does this sensor require a gasket or O-ring?
A: Most 21271982 sensors come with a pre-installed sealing ring. However, it is always best practice to check if your specific expansion tank requires an additional threaded seal or if it is the "push-and-twist" style.
About SPARKLING MACHINERY:
- Founded in 2013, SPARKLING focuses on high-quality excavator parts across hydraulics, undercarriage, engines and electrical systems. We prioritize stability, precision and continuous service, offering worldwide distribution, tailored solutions and strict QC to help customers reduce cost and increase uptime.

Get In Touch:
- Replace your failing ECU confidently. Contact SPARKLING for pricing, lead time, and technical support — restore optimal machine control quickly and reliably.
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📦 Packing
1. Packaging methods: Carton box + Wooden case/Pallet + Anti-rust treatment
2. Export-standard packaging to ensure safety during transportation
3. Custom packaging available upon request
4. Dimensions and weight can be provided for freight calculation



🚚 Shipping
1. Available shipping methods: Sea freight, Air freight, Express delivery (DHL, UPS, FedEx, etc.)
2. LCL (Less than Container Load) and FCL (Full Container Load) options are supported
3. For Russian clients, we can introduce the forwarder agent to you
4. Delivery time: Ships within 1-3 working days after payment (for items in stock)
💳 Payment
1. Accepted methods: T/T, Bank Transfer, PayPal, Alipay, WeChat Pay, Western Union
2. Deposit + balance payment available for large or custom orders
3. Flexible payment options—feel free to contact us for details
📌 Frequently Asked Questions (FAQs)
Q: Which excavator models is this part compatible with?
A: This product is compatible with major brands such as CAT, KOMATSU, HITACHI, and more. Custom specifications are also available.
Q: How can I make sure I’m selecting the correct part?
A: You can send us a photo of the old part, part number, or your excavator model, and we will help you confirm the right match.
Q: Is there a warranty for this product?
A: Yes, we offer a 6-month quality guarantee under normal use.
Get a free quote
We are committed to producing the highest quality products at the most competitive prices. Therefore, we sincerely invite all interested companies to contact us for more information.




Sparkling Machinery Co.,Ltd
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