APOLLO Ultrasonic Sensor 3L Cross Reference Guide For 2567579 2527049 On S2100 S2100-2 Paver Screed

APOLLO Ultrasonic Sensor 3L Cross Reference: Matching 2567579 And 2527049 To Your S2100 Screed

More wrong part returns on APOLLO paver sensors come from part number confusion than from any fault in the parts themselves. The 3L ultrasonic sensor family shares the same green body, the same connector and very similar mounting across several paver models, so two probes that look identical on the bench can be completely different on the machine. This guide explains how to confirm that the APOLLO green ultrasonic sensor 3L, part numbers 2567579 and 2527049, is the correct probe for an S2100 or S2100-2 asphalt paver screed before the order is placed.

What The 3L Probe Actually Does

The sensor is the reference eye of the screed leveling loop. Bolted to the screed arm, it scans a reference - stringline, existing surface or curb - and returns continuous distance values to the paver control unit. The control unit converts those values into screed height and cross slope corrections, so mat thickness and profile hold steady while the machine keeps moving.

• If the probe reads wrong, the screed corrects wrong: thickness drifts and asphalt is wasted.
• If the probe drops out, the operator falls back to manual control: profile faults and slow lay speed follow.
• If the probe is the wrong variant, the connector may fit but the output signal will not match the control unit.

Three Checks Before You Order

1. Read The Number On The Failed Probe

Take the number from the label or casting on the probe being replaced, not from the parts book alone. Cross reference both directions: 2567579 and 2527049 are the numbers used on the S2100 and S2100-2 screed application, and listings that quote only one of them should be confirmed with the supplier.

2. Confirm The Machine Family

The 3L body is used across the APOLLO paver range, including S1800 and S1900 variants, but the harness length, connector keying and calibration differ between families. State the paver model and, where possible, the machine serial number when requesting a quote.

3. Check The Mounting And Connector

The correct probe bolts directly to the existing screed arm bracket with a plug and play connector. If a bracket adapter or harness splice is being proposed, the part is not a direct replacement for the S2100 application and should be questioned.

Specification Summary

Failure Signs That Point To The Sensor

• Mat thickness varies along the run even though the reference surface has not changed.
• The control unit shows a constant distance reading regardless of screed height.
• The screed stops correcting slope on one side of the machine.
• Fault codes appear consistently at the same temperature or vibration level.

Before condemning the probe, check the harness connector for moisture and confirm the bracket has not bent. A sensor that is blamed for a wiring fault is an expensive diagnosis.

Stock, Lead Time And Fitment Support

Stock of the VGL-3L green ultrasonic sensor 3L is held for both emergency single unit replacement and fleet stocking:

• Minimum order quantity: 1 pc
• Supply ability: 1000 pcs per month
• Delivery time: 7 to 10 days after confirmation
• Payment terms: L/C, T/T, Western Union

Send your paver model, the part number from the failed probe and a photo of the connector, and the fitment check is confirmed the same working day before the parcel leaves the warehouse.

Contact

paverspareparts.com supplies APOLLO paver spare parts - leveling and slope sensors, temperature sensors, display screens, screed components and rubber parts - to contractors, rental fleets and distributors worldwide. Contact the parts team with your part number for a cross reference check and current price.