Volvo D13 Temperature Sensor | OEM 20513340 21531072

You have 30 calendar days to return an item from the date you received it. To be eligible for return all parts must meet the following conditions:
• The item must be new, unused, and uninstalled;
• The product must be in salable condition, with no signs of installation (e.g., grease, scratches, or missing components);
• Original packaging is required, especially for branded parts;
• Any item that has been installed, modified, or misused is not eligible for return;
• Unacceptable returns may be shipped back to the customer upon request, at the customer's expense;
• Your item needs to have the receipt or proof of purchase.
We have a Restocking Fee which applies for return items with damaged package. Restocking Fee is 25%-50% of initial purchase.
• Do not tape the original packaging box — Restocking Fee will apply;
• Do not stick any shipping label/sticker on the original packaging box — Restocking Fee will apply;
• We recommend using stretch film to wrap the original packaging box. Use an additional shipping box or envelope to return the item.
You will be responsible for paying your own shipping costs for returning your item. Shipping costs are nonrefundable.

Standard Shipping — rates calculated at checkout (3-5 business days)
Express Shipping available at checkout (1-2 business days)
Guaranteed Overnight Shipping available at checkout — order before 2 PM PST (Monday–Friday)
International shipping available to Canada and EU — rates calculated at checkout.
All orders processed within 1 business day (excluding Sunday and holidays).

The ZTech Volvo D13 Temperature Sensor (20513340 / 21531072) monitors both coolant and oil temperatures in the D13 engine, providing dual temperature inputs to the engine management system for thermal protection. Accurate temperature monitoring prevents catastrophic overheating damage — the ECM triggers warning systems and can perform protective shutdowns based on these readings. ZTech sensors are manufactured to OEM calibration standards for reliable temperature measurement in Volvo VNL trucks.

Q: Which trucks does this temperature sensor fit?
A: Fits Volvo VNL trucks with D13 engines. Replaces OEM part numbers 20513340 and 21531072.

Q: What fault codes does a failing temperature sensor trigger?
A: Common codes include SPN 110 (engine coolant temperature) and SPN 175 (engine oil temperature) faults in Volvo VCADS.

Q: What happens if a temperature sensor fails?
A: A failed sensor can cause false overheating warnings (unnecessary shutdowns) or fail to detect actual overheating (engine damage).

Q: Is this OEM or aftermarket?
A: ZTech is a European aftermarket brand manufacturing sensors calibrated to Volvo D13 OEM temperature specifications.

Q: What is included with this sensor?
A: Includes the complete dual coolant/oil temperature sensor assembly with connector, ready for plug-and-play installation.