HSN code 8404: Auxiliary plant for use with boilers of heading 8402 or 8403 (for example, economisers, super-heaters, soot removers, gas recoverers); condensers for steam or other vapour power units

HSN heading 8404 sits in chapter 84 (Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof). It has 3 8-digit tariff items. On a tax invoice, businesses with turnover up to ₹5 crore show at least the 4-digit code 8404; above ₹5 crore, the 6-digit sub-heading.

⚠️About GST rates: GST rates on many goods changed from 22 September 2025, when most items moved to the 5% and 18% slabs and a few to 40%. This finder lists codes and descriptions only — confirm the rate for your item in the current CBIC rate notification before you invoice.

8-digit tariff items under 8404

HSN code	Description
84041000	Auxiliary Plant For Use With Boilers Of Heading 8402 Or 8403 (For Example, Economisers, Superheaters, Soot Removers, Gas Recoverers); Condensers For Steam Or Other Vapour Power Units Auxiliary Plants For Use With Boilers Of Heading 8402 Or 8403
84042000	Auxiliary Plant For Use With Boilers Of Heading 8402 Or 8403 (For Example, Economisers, Superheaters, Soot Removers, Gas Recoverers); Condensers For Steam Or Other Vapour Power Units Condensers For Steam Or Other Vapour Power Units
84049000	Auxiliary Plant For Use With Boilers Of Heading 8402 Or 8403 (For Example, Economisers, Superheaters, Soot Removers, Gas Recoverers); Condensers For Steam Or Other Vapour Power Units Parts

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