U.S. imports of Parts for Industrial & Laboratory Furnaces, Ovens, and Heating Equipment (HS 851490) totaled $43.5M in August 2026, imported from 53 countries.
Importers of Parts for Industrial & Laboratory Furnaces, Ovens, and Heating Equipment paid $2.1M in duties in August 2026, an average duty rate of 5.56% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Parts for Industrial & Laboratory Furnaces, Ovens, and Heating Equipment imports of $43.5M in August 2026 ran 53% above the year-to-date monthly average of $28.4M.
Last updated: August 2026 dataReplacement and OEM parts for the full range of industrial electric furnaces, laboratory ovens, and induction or dielectric heating equipment are captured here, with the US schedule drawing a notable split between microwave oven parts (8514904000) and all other industrial and laboratory furnace and oven parts (8514908000). Japan leads supply under this heading, consistent with its role as a major producer of precision heating equipment whose aftermarket parts flow to US end-users; Germany and Mexico are also significant sources. Correct parts classification requires confirming that the part is solely or principally used with equipment of heading 8514, as parts suitable for multiple headings follow different classification rules.
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790 import shipments a month
Parts classifiable under 8514904000 must be identifiable as components of microwave ovens — such as magnetrons, waveguide assemblies, or turntable motors designed for microwave units. General heating elements, refractory liners, control boards, or structural components for resistance, induction, or arc furnaces fall under 8514908000. When a part is common to both microwave and non-microwave equipment, classification follows the principal-use rule.
Country of origin for duty purposes is determined by where the part itself was manufactured or substantially transformed, not where the parent furnace was made. A replacement heating element manufactured in Mexico for a German-origin furnace would be assessed duties based on Mexican origin. However, if the part is imported alongside the original equipment as an accessory, it may be classified with the main equipment under GRI 3. Trade-remedy applicability (e.g., Section 301 for Chinese-origin parts) is also determined by the part's own origin.
ImportsExports
Imports
$43.5MYoY · free account
Exports
$39.6MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $309.6M of Parts for Industrial & Laboratory Furnaces, Ovens, and Heating Equipment and exported $406.9M.
Through August 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8514908000 | Industrial/Lab Furnace & Oven Parts, NESOI | $37.9M | 5.52% | 87.32% | $2.1M |
| 8514904000 | Microwave Oven Parts | $99K | 20.52% | 100.00% | $20K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8514908000 | Industrial/Lab Furnace & Oven Parts, NESOI | $38.2M |
| 8514904000 | Microwave Oven Parts | $1.4M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
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Subheading 1 of 8 in heading 8514
Subheading 851490 · $43.5M of $96.0M
Imports · August 2026
origin
Japan and Germany together supply 61% of it. South Korea pays 12.4% duty; Mexico <0.1%.
customs district
destination
entry
rate provision · imports
11.1% enters free of duty; duty collected equals 5.56% of imports for consumption.