Mestek j38r06891-001 Spark Ignitor Xf Series

Product Description

The MESTEK j38r06891-001 is a spark ignitor designed for use in XF Series gas-fired heating units rated from 100,000 to 400,000 BTU/h. The ignitor generates the high-voltage spark that initiates combustion at the burner assembly. It is a direct OEM-style replacement component installed by licensed HVAC technicians and commercial heating service professionals. The part is identified under the Sterling brand, which operates under the MESTEK family of heating products. Proper ignitor function is critical to reliable burner light-off and safe system operation across the full capacity range of the XF Series product line.

This ignitor is applicable to XF Series heaters spanning the 100,000 through 400,000 BTU/h capacity range, covering both light commercial and heavy commercial heating applications. The XF Series is typically found in warehouses, garages, loading docks, and similar large-space heating installations where dependable ignition performance is essential during repeated on-off cycles. Service technicians replacing a failed or degraded ignitor on any unit in this series should verify the unit model and BTU/h rating before installation.

Key Features

• Spark ignition design compatible with XF Series 100,000 to 400,000 BTU/h heaters
• OEM part number ensures direct-fit replacement without modification
• Supports reliable burner light-off across a wide commercial capacity range
• Sterling by MESTEK OEM sourcing for verified fitment

Compatibility

Designed as a spark ignitor replacement for MESTEK Sterling XF Series gas-fired heaters rated from 100,000 to 400,000 BTU/h.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified gas appliance service professional. Shut off gas supply and disconnect electrical power to the unit before removing the existing ignitor. Handle the ignitor carefully to avoid cracking the ceramic insulator, which will cause ignition failure. Follow applicable local codes and manufacturer service documentation when reinstalling and restoring the unit to operation.

Technical Specifications

• Application: Spark ignitor for XF Series gas-fired heaters
• Heater Capacity Range: 100,000 to 400,000 BTU/h

Standard Information

• Brand: MESTEK
• Manufacturer Part Number: j38r06891-001