00-348361-00001 — Fenwal Fryer Thermostat, 75–550 °F, 1/2 in NPT

Fenwal thermostat with melt/melting function, 75–550 °F range, wire leads (2 × 1/4 in female push-on), 1/2 in NPT mounting, 4-3/4 in probe.

Availability Status

Obsolete — no successor

PartsTown lists this number as Obsolete with no successor part number.

Source: public distributor listing, checked 2026-10-19. Availability changes; re-check before ordering.

Market Reference

seen at $266.42, Non-OEM, made in United States. 5+ 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.

Compatible Models

Frymaster / Vulcan

MJ41E
MJ45E
(MJ series fryers)

Garland

selected models

Cross-Reference / Interchange Part Numbers

This item is listed under the following part numbers across manufacturer documentation and distributor catalogs:

00-348361-00001
348361-00001
348361-1
HOB00-348361-00001
461520
46-1520
8060181

Cross-references marked as reported come from distributor interchange tables rather than manufacturer statements. Always verify against your equipment's parts manual before ordering.

Specifications

Brand	Fenwal
Temperature range	75–550 °F
Electrical connection	2 × 1/4 in female push-on wire leads
Mounting	1/2 in NPT
Probe length	4-3/4 in
Dial	A2252 (#221185, round with indicator arrow)
Dial plate	A3335 / K-178 (#221344)

What to Verify Before Ordering

These are the points that most often cause a wrong order on this specific part number. They are not generic advice.

Fenwal is the original maker — Fenwal builds this thermostat; Hobart resells it under its own number. On this part, OEM vs non-OEM listings often describe the same device sold through different channels - ask the seller whether the body carries the Fenwal name or a UL file number.
Mount is 1/2 in NPT, probe 4-3/4 in — Not 3/8 in. Two 1/4 in female push-on terminals. Confirm the fitting and terminal style, not just the temperature range.
Range 75-550 F — This is a wide-range regulating thermostat, not a fixed hi-limit. Do not fit it where a fixed cut-out is specified.

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.

How the sources word it

The number is a Fenwal melt thermostat sold under a Hobart part number. Two independent distributors publish the same physical specification; neither is the manufacturer’s own catalogue.

Source	Wording (verbatim)	What it is	Link
KitchenRestock specification (distributor wording, not OEM)	“Fenwal T'Stat, Melt W/Wire Leads, 2Ea. 1/4" F Push-On, Temp 75-550, Mount 1/2 Npt, Probe = 4-3/4"”	Wire leads, 1/2 NPT mount, 4-3/4 in probe, 75-550 F range.	kitchenrestock.com
PizzaOvens specification (distributor wording, not OEM)	“Fenwal T'Stat, Melt W/Wire Leads, 2Ea. 1/4" F Push-On, Temp 75-550, Mount 1/2 Npt, Probe = 4-3/4"”	Same string, second source — the part is identified by its probe and mount.	pizzaovens.com

What it fits and where it is used

Fryer temperature control with a wide 75–550 °F range, including melting/solid-shortening applications. The dial lock plate and flexible shaft options in the OEM parts listing are specific to MJ41E and MJ45E fryers.

What it does and how it fails

A vapour-charged sensing bulb and capillary drive a diaphragm; the dial biases a set of contacts against it. There is no electronics inside. When a unit like this fails it fails in one of four ways: the contacts weld closed (heat keeps rising), the contacts open and stay open (no heat at all), the charge is lost through a cracked bulb or a kinked capillary (the unit behaves as if the oil is always cold), or the calibration drifts so the dial no longer matches the oil temperature. Only the last one still 'works' — which is why it is the one that quietly overcooks oil or trips the hi-limit.

Symptom check — is this control thermostat the cause?

Symptom	This part?	Check first
Oil keeps climbing past the dial setting until the hi-limit trips	Yes — contacts welded closed	Hi-limit continuity first; whether the burner stays lit with the dial turned to OFF
No heat, pilot or ignition sequence fine, dial turned up	Possible — contacts open, or charge lost	Gas-valve operator signal, hi-limit continuity, ignition sequence
Dial setting and oil temperature disagree by more than a few degrees	Possible — drift, or a fouled / mis-seated bulb	Bulb coating and immersion depth; cross-check the oil with a separate thermometer
Dial turns with no resistance, or no click at either end of the range	Possible — stripped shaft or detached capillary	Capillary routing at the stuffing box (kinks, crushed sections)

How to test it before you replace it

Isolate gas and power, and cool the oil below 100 °F so the bulb is at room temperature.
Disconnect the two wires at the thermostat and measure continuity across its terminals: at room temperature a healthy unit reads closed.
Warm the bulb only — hot water or a heat gun on the bulb, never on the capillary — and watch for the contacts to open at the top of the 75–550 °F range.
Cool the bulb and confirm the contacts close again. A unit that opens but never recloses leaves the fryer dead after one good cycle, and is often mistaken for a gas fault.
Run a hand along the full capillary looking for kinks, flattened sections or a bulb that rattles. A damaged capillary cannot be repaired or recharged.
and mounting.

These are standard electrical and gas-side checks for the device family, not a service manual for your fryer. Work with the appliance isolated, and have gas-side work done by a qualified fitter. Where this page states a value, it is copied from the specification table above; where it does not, the reading is only meaningful against your appliance manual.

Substitutions that fit but do not work

Control voltage. A millivolt controller and a 24 V controller can share the same body and thread. Check the wiring diagram and the valve operator before substituting; driving a millivolt operator with 24 V, or the reverse, gives no control and can burn the operator coil.
Range. 75–550 °F on this record. A different range still bolts on and still switches, but the dial numbers no longer correspond to oil temperature.
Probe shape. Bulb diameter and length decide whether the sensing element sits in the oil flow or in a pocket of cooler oil. A loose bulb reads low and the fryer runs hot.

Related records and guides

Diagnosing repeated hi-limit trips — which device is actually at fault
Hi-limit thermostat fit guide — set point, reset type, probe and thread
OEM vs aftermarket: what the price gap actually pays for
00-411506-00013 — same family, control thermostat
00-410687-00001 — same family, control thermostat
00-414880-00001 — same family, control thermostat

Frequently Asked Questions

What does 00-348361-00001 fit?

The OEM parts listing references MJ41E and MJ45E fryers (Frymaster/Vulcan MJ series); some catalogs also list it for selected Garland models.

What is the temperature range?

75–550 °F — wider than the standard 200–400 °F fryer thermostats.

How is it mounted?

1/2 in NPT mounting with a 4-3/4 in probe, connected by wire leads.

China Sourcing Notes

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.

Sources & Compilation Note

Compiled from distributor catalogs (PartsFe, Restaurant and More, Bakedeco, Socold Products, AllPoints, FoodServiceDirect) and OEM parts listings.

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.