36-inch coaxial thermopile, 250–750 mV, 3/8-32 mounting thread — the Robertshaw 1951-53F type used on Vulcan GR-series fryers and Wolf fryers and grills. Coaxial (single-conductor) construction; it is NOT interchangeable with the two-lead 1950-53B thermopile.
Active at the OEM but on backorder as of 2026-10-20. Aftermarket equivalents are widely stocked, and OEM list pricing runs several times the street price for the same thermopile.
Source: public distributor listing, checked 2026-10-19. Availability changes; re-check before ordering.
seen at $41.07, Non-OEM, made in Mexico. 15+ units sold in recent months.
Source: public product listing at a major US parts retailer, checked 2026-10-20. This is a market observation for reference only — it is not an offer, a quotation, or a commitment to supply at any price.
This item is listed under the following part numbers across manufacturer documentation and distributor catalogs:
00-348358-00001348358-00001110839-100-410839-00001410839-0000100-7113351133551-1122Robertshaw 1951-53FP8905-38810-0162| Type | Coaxial thermopile (single conductor through a 3/8-32 body) |
|---|---|
| Output | 250–750 mV |
| Lead length | 36 in |
| Mounting thread | 3/8-32 |
| Poles | 1 (coaxial) |
| Robertshaw equivalent | 1951-53F |
| Weight | 0.15 lb (00-410839-00001 variant) |
These are the points that most often cause a wrong order on this specific part number. They are not generic advice.
Compiled from manufacturer catalog strings and distributor listings. Verify against your own equipment's parts manual before ordering. This is not an offer or a quotation.
No OEM catalogue page for this number was reachable, so nothing here is presented as manufacturer text. The facts that decide the fit — thread, output range and cross-reference — come from a distributor specification sheet and are quoted as such.
| Source | Wording (verbatim) | What it is | Link |
|---|---|---|---|
| PartsFe specification (distributor wording, not OEM) | “36" Coaxial Thermopile, 250-750 Mv · Coaxial Thermopile Threads = 3/8"-32. · Robertshaw 1951-53F” | Thread, output range and the Robertshaw cross-reference, all on one sheet. | partsfe.com |
Standing-pilot millivolt generation on Vulcan GR / GRC / GRD / GRS series fryers and on Wolf TMM 36/37/38 fryers and grills. The thermopile supplies the millivolt signal that holds the pilot and operates the gas valve.
A thermopile is a stack of thermocouples heated by the standing pilot. It generates the millivolts that hold the safety magnet in the gas valve open; there is no external supply. This is a coaxial unit: one conductor down the centre, the body is the return. It is not a two-lead thermopile with a different plug.
| Symptom | This part? | Check first |
|---|---|---|
| Pilot lights but dies when the knob is released | Yes, possible — weak output or a bad connection | Pilot flame envelope and orifice, terminal tightness, then measure output |
| Pilot holds, main burner never lights | Possible — output collapses under load | Thermostat call, gas-valve operator, output measured at the valve terminals |
| Burner drops out after a few minutes of running | Possible — output falls as the pile heats | Output under load; corrosion or heat damage on the leads |
| Pilot will not stay lit at all, flame looks fine | Possible — reversed polarity or shorted lead | Lead routing, pinched insulation, correct replacement type |
No. The coaxial 1951-53F type (3/8-32 body, single conductor) and the two-lead 1950-53B type are both 36 in and both rated 250–750 mV, but they are different parts and are not interchangeable.
They are the same thermopile under different ITW numbers — 00-410839-00001 is the Vulcan-labelled equivalent.
3/8-32.
Capillary, millivolt and high-limit thermostats in these part families are produced in volume in China. Public supplier directories list manufacturers concentrated in specific industrial clusters: Zhongshan (Guangdong) for capillary, millivolt and deep-fryer thermostats; Wenzhou (Zhejiang) for capillary, gas, immersion and mechanical thermostats with OEM/ODM capability; and Jinan (Shandong) for gas-valve and thermostatic gas-control components. When sourcing these parts from China, verify: dimensional drawings, sensing-bulb and capillary specifications, temperature accuracy, electrical ratings, cycle-life testing and applicable safety certifications (CE / CQC / UL). A high-limit safety thermostat must not be substituted on the basis of physical fit alone.
Compiled from Vulcan and Wolf OEM parts manuals, Parts Town and distributor fitment data, and Robertshaw 1951-53F specifications.
Part numbers and specifications are reproduced as published by the sources listed above. This page is a reference compilation for identification purposes. Last compiled: 2026-10-31.